#Hydraulic driven valve gate

[gudmould]

Hot runner mold technology, this time it is explained clearly!

What is a hot runner Hot runner is a method of heating to ensure that plastics in runner and gate remain molten. Hot runner system generally consists of several parts such as hot nozzles, manifolds, temperature control boxes and accessories. Hot nozzles generally include two types: open hot nozzles and needle valve hot nozzles. Since form of hot nozzle directly determines selection of hot runner…

[usedinjectionmoldingmachines]

Upgrade Your Plastic Manufacturing With High-quality Used Husky Plastic Injection Molding Machines

Husky is one of the best injection molding machines in the world. especially true in the realm of injection molding, where every detail matters in shaping the final product. Among the leading players in this industry is Husky Injection Molding Systems Ltd., renowned for its cutting-edge technology and innovative solutions. A new Husky machine may cost a lot, and this may prevent manufacturers from buying it.

Are you a manufacturer looking to get the best Husky molding machine? Get Used Husky Plastic Injection Molding Machines from Hunter Plastics. We provide various used machines that can help you with your production. Let's delve into the advanced features that make Husky Injection Molding Machines stand out from the crowd.

1. Precision Control Systems

Husky Injection Molding Machines are equipped with state-of-the-art precision control systems that ensure accurate and consistent molding processes. These systems utilize advanced algorithms and sensors to monitor and adjust key parameters such as temperature, pressure, and injection speed in real time. 

2. Intelligent Hot Runner Technology

Husky's intelligent hot runner technology incorporates features such as valve gate sequencing, temperature profiling, and flow control to optimize material flow and distribution. This results in superior part quality, reduced material consumption, and faster cycle times, making it an ideal choice for high-volume production applications.

3. Energy Efficiency

Husky Injection Molding Machines are designed with energy-saving features that help reduce power consumption without compromising performance. These include servo-driven hydraulic systems, regenerative drives, and optimized heating and cooling processes. By minimizing energy waste, Husky machines not only lower operating costs but also contribute to a greener and more sustainable manufacturing industry.

4. User-Friendly Interface

Ease of use is another hallmark of Husky Injection Molding Machines. The intuitive HMI (Human-Machine Interface) provides operators with easy access to machine controls, diagnostics, and troubleshooting tools. 

Conclusion:  These rich features make the Husky molding machine one of the best in the industry. We have various machines including Husky Injection Molding Machines for sale! Contact us today to get your ideal machine.

[aboveaveragexx]

Types of Rotary Actuator In India And Its Working Principles

A rotary actuator is a mechanical device that converts fluid, electrical, or mechanical energy into rotational motion. It plays a crucial role in various industries and applications, providing precise and controlled movement to various systems. In India, rotary actuators are widely used across different sectors, including manufacturing, automation, robotics, and aerospace.

Here are some key points to understand about rotary actuators:

Functionality: Rotary actuators are designed to provide rotary motion, allowing objects to rotate in a controlled manner. Depending on the specific design and requirements, they can produce rotational movement in either a unidirectional (180 degrees or less) or bidirectional (full 360 degrees) manner.

Types of Rotary Actuators: There are several rotary actuators, including hydraulic, pneumatic, and electric. Hydraulic rotary actuators use pressurized fluid to generate torque, pneumatic actuators utilize compressed air, and electric actuators convert electrical energy into rotational motion.

Applications: Rotary actuators find applications in a wide range of industries. They are used in assembly lines, packaging equipment, and machine tools in manufacturing. In automation, they enable precise positioning and movement in robotic systems. They are also utilized in valve control, material handling, and aerospace applications.

Benefits: Rotary actuators offer several advantages, such as high torque output, precise control, compact size, and quick response time. They can be easily integrated into existing systems and are known for their durability and reliability.

Considerations: When selecting a rotary actuator, factors such as torque requirements, speed, operating environment, and control options must be considered. Choosing a reliable supplier or manufacturer that offers quality products and after-sales support is important.

The demand for rotary actuators is rising in India due to the country's expanding industrial sector. Manufacturers and suppliers in India offer a wide range of rotary actuators to cater to diverse application needs.

By understanding the basics of rotary actuators and their applications, businesses in India can leverage these versatile devices to enhance their operations' productivity, efficiency, and precision.

Types of Rotary Actuators 

Rotary actuators play a crucial role in various industrial and automation applications, providing rotational movement to control valves, gates, robotics, and more. In India, a wide range of rotary actuators are available to cater to diverse needs. Here are some common types:

Pneumatic Rotary Actuators: Powered by compressed air, these actuators offer quick and precise rotation with high torque capabilities. They are commonly used in manufacturing, packaging, and automotive industries.

Hydraulic Rotary Actuators: Utilizing hydraulic fluid, these actuators provide powerful and smooth rotation, making them suitable for heavy-duty applications such as construction equipment and industrial machinery.

Electric Rotary Actuators: These actuators employ electric motors to generate rotational movement. They offer precise control and quiet operation and can be easily integrated into automated systems.

Gear-driven Rotary Actuators: These actuators use gears to convert linear motion into rotational movement. They are commonly used in robotics, indexing tables, and positioning systems.

Direct-drive Rotary Actuators: These actuators eliminate the need for gears or belts, offering high accuracy, reduced backlash, and increased durability. They are ideal for applications that require precise positioning.

When considering a rotary actuator India, assessing your specific application requirements, such as torque, speed, and environmental conditions, is important. Consulting with local suppliers or manufacturers can help you find the most suitable rotary actuator for your needs.

Working Principle of A Rotary Actuator 

A rotary actuator is a mechanical device that converts fluid, electric, or hydraulic power into rotational motion. It plays a crucial role in various industrial and automation applications, including robotics, manufacturing, and process control. Here are the key points explaining the working principle of a rotary actuator:

Fluid power conversion: Rotary actuators use fluid pressure, such as hydraulic or pneumatic power, to generate rotational movement.

Cylinder and piston arrangement: The actuator consists of a cylinder housing and a piston assembly. The piston is connected to the output shaft.

Fluid supply and control: Fluid is supplied to the actuator through input ports, and valves control its flow and direction.

Pressure application: When fluid pressure is applied to one side of the piston, it pushes the piston, causing the output shaft to rotate.

Reversal of motion: To reverse the rotational direction, the fluid flow is redirected to the other side of the piston, pushing it in the opposite direction.

Precision and control: The speed and position of the rotary actuator can be controlled by adjusting the fluid pressure and flow rate.

The working principle of a rotary actuator remains consistent regardless of geographical location, making it a valuable component in industrial applications in India or any other country.

Advantages of Using A Rotary Actuator 

Rotary actuators offer numerous advantages in various industries and applications. Here are some key benefits to consider:

Precise control: Rotary actuators provide accurate and precise control over rotational movement, allowing for precise positioning and angular adjustments in mechanical systems.

Compact design: These actuators are typically compact and space-efficient, making them suitable for applications with limited space availability.

Versatility: Rotary actuators can be used in a wide range of applications, including robotics, automation, industrial machinery, and aerospace, among others.

High torque output: They offer high torque output, enabling them to handle heavy loads and perform tasks that require significant force.

Energy efficiency: Rotary actuators are often designed to be energy-efficient, reducing power consumption and operating costs.

Durability: These actuators are built to withstand harsh environments and demanding operating conditions, ensuring long-lasting performance and reliability.

In India, the demand for rotary actuators is growing rapidly, with various industries recognizing their advantages and incorporating them into their systems. Businesses can benefit from improved control, efficiency, and durability in their mechanical applications by utilizing a rotary actuator in India.

Where to Buy A Rotary Actuator in India? 

When it comes to purchasing a rotary actuator in India, it is important to find a reliable source that offers quality products and excellent customer service. Here are some options to consider:

Online industrial suppliers: Many reputable online suppliers cater to the Indian market and offer a wide range of rotary actuators. Look for well-established platforms that provide detailed product information, customer reviews, and reliable delivery options.

Local industrial equipment stores: Explore local industrial equipment stores or distributors that specialize in mechanical components. They may have rotary actuators in stock or can order them for you.

Manufacturer's official distributors: Check if the manufacturer of the rotary actuators you are interested in has authorized distributors in India. These distributors are likely to offer genuine products and provide support.

Trade shows and exhibitions: Attend industrial trade shows and exhibitions in India where various manufacturers and suppliers showcase their products. This will allow you to interact directly with suppliers and evaluate different options.

When searching for a rotary actuator in India, conduct thorough research, compare prices and features, and choose a reputable seller that meets your requirements.

[deltastark]

What are the Three Basic Types of Injection Moulding Machines?

Since the type and features of an injection molding machine can impact project outcomes, equipment selection should be left to the injection molder.

Molders undoubtedly play a crucial role in organizing projects and injection molding tools. Learning the basics of a machine can help you make better design choices, more accurate project cost & production time estimates, and even point you in the direction of the manufacturer of injection molding robots who is best equipped to meet your needs.

To choose the best kind of mold to make the parts, you should first familiarize yourself with the various types of injection Moulding machines and what they can offer to you! 

What are Injection Molding Machines?

An injection device and a clamping mechanism make up the majority of injection molding machines. The plastic particle substance is heated into a liquid by the injection device. The clamping device secures the mold while supplying the necessary power for clamping, shutting, and other operations. 

An injection molding machine has two obvious advantages: quick processing and low expenses. When choosing the right injection molding machine, it’s important to consider a few things. Larger products call for a larger machine, typically needing more expert care for correct operation. 

Also, specific consideration must be given to the injection requirements, including the mold opening stroke, mold clamping force, injection capacity, screw compression ratio, injection speed, look, and final product performance. 

Types of Injection Molding Machines - Know About the Big 3:

There are numerous varieties of injection molding machines. However, three kinds are categorized according to the drive/motor - (hydraulic, electric & hybrid). 

Hydraulic Injection Molding Machine

The hydraulic injection machine's primary source of power is hydraulics. The machine's low price is one of its distinguishing features. On top of that, it can be used to create larger components like multi-piece molds and car bumpers. 

For actuating core pulls, ejectors, valve gates, and thick-walled components that need extended hold periods, hydraulic injection molding, along with pick & place injection molding robots, is the favored choice.

However, it’s not all good with a Hydraulic Injection Molding Machine. The expense of manufacturing and maintaining machines is expensive. Given their power, hydraulic machines use much energy even when they are not in use. Hydraulic machines can use around 5.12 kWh during injection molding, compared to the average electric machine's 2.55 kWh. 

Also, they need higher molding temperatures and more cooling time, and because there is a chance of fluid leaks, they are not advised to clean rooms.

All Electric Injection Molding Machine

Instead of using hydraulics, these machines are driven by high-speed servo motors that are digitally controlled, enabling a quicker, more consistent, more accurate, and energy-efficient operation. 

Once a desired injection process has been achieved, it can be replicated reliably, producing better-quality components because electric machine action is highly predictable. An electrical machine can operate practically autonomously once a task has been put into it, which reduces labor costs and increases revenue.

Despite being quicker, cleaner, and more energy-efficient than hydraulic machines, electrical machines are more expensive up front and cannot generate the same clamp pressures. 

Hybrid/ Servo Hybrid Injection Molding Machines

Hybrid injection molding machines, which combine the best features of both worlds, have been available on the market for several decades and combine the better-clamping power of hydraulic machines with the accuracy, repeatability, energy savings, and decreased pollution of electric machines. 

In hybrid injection molding machines, a servo motor drives a hydraulic compressor that generates hydraulic pressure to power the machine's parts, automated by a pick & place servo robot. As a result, the clamping systems are simpler, more precise, and more robust, significantly lowering the upkeep cost. 

Due to the diversity of hybrids, it can be challenging to match the good press to the product and to find substitute equipment for specific uses. 

The Bottom Line:

The best form of injection molding for you will depend on various factors. All three techniques might be similarly effective for some molding jobs, but it's still essential to know how they differ from one another and how they apply to your project.

Whatever your particular application, an injection molding machine, whether hydraulic, electric, or hybrid, should be able to give you cost-effective, durable components. DeltaStark offers a range of Pick & Place Injection Moulding robots to meet your unique needs to bolster your production. Ready to learn how DeltaStark can meet your high-volume production needs? Get in touch with us!

[viking-marine-construction-llc]

Viking Marine Construction

Dredging is embraced for an assortment of reasons including route, natural remediation, flood control, and the emplacement of designs (e.g., establishments, pipelines, and passages). These exercises can produce enormous volumes of waste requiring removal. Dredging is likewise embraced to win materials, for instance, for recovery or sea shore sustenance. Kinds of material dug can incorporate sand, sediment, dirt, rock, coral, rock, stones, and peat. Digging for metals is viewed as further inside the part on modern squanders.

Most dredging exercises, especially water driven dredging, create an overspill of fine strong material as an outcome of the dredging action. The molecule size qualities of this material and the hydrodynamics of the site will decide how far it might float prior to settling and this will impact the degree and seriousness of any actual effect outside the quick dredging site. The synthetic attributes of this material must be thought about in any danger appraisal of the results to the climate.

Marine Construction Services:

Concrete Rehabilitation

Pile Jacketing

Dam Hydraulic Valve Systems

Bridge Foundation Repairs

Pipeline Installation

Marina Construction

Lock Gate and Valve Repairs

Buoy Systems

Dredging

Hull Repairs

Intakes and Outfalls

Scour Repairs

Coating Systems

SPECIALTY SERVICES

LIVING SHORELINE CREATION

DEMOLITION / DISPOSAL

DERELICT VESSEL REMOVAL

DEAD HEAD LOGGING

SALVAGE OPERATIONS

SHORELINE STABILIZATION

VINYL SEAWALLS

COMPOSITE SEAWALLS

TIMBER SEAWALLS

CONCRETE SEAWALLS

STEEL SEAWALLS

RIP RAP

DOCKS

COMPLETE MARINAS

FIXED AND FLOATING DOCKS

CONCRETE

TIMBER

ALUMINUM

BRIDGES

PEDESTRIAN

GOLF CART

VEHICULAR

BRIDGE FENDERS

DREDGING

MAINTENANCE

CHANNEL

SHORELINE RESTORATION

HABITAT RESTORATION

Dredging projects include two operational segments: expulsion of the silt and removal ofthe residue (dug material the executives). While there is an growing industry that can make helpful utilization of dig material, there are still intricacies and unique necessities whenever dug material is or then again suspected to be polluted. Debased dug material ought to be moved and arranged of effectively, typically at a kept removal office. For more data on dredging here.

[fertilizergranulator]

Function of Mineral Powder Double Roller Press Granulator

Double roller press granulator can be used to press various powders, wastes and slags, such as pulverized coal, iron powder, coke coal, aluminium powder, iron scrap, iron oxide scale, carbon powder, carbon powder, slag, gypsum, tailings, sludge, kaolin, activated carbon, coke powder, etc. The mineral powder is granulated through the extrusion roll of the machine.

Double roller fertilizer granulator is widely used in refractory, power plant, metallurgy, chemical industry, energy, transportation, heating and other industries. The material formed by granulator is energy-saving, environmental protection and easy to transport. Compare with other fertilizer granulator machine, our double roller granulator has improved the utilization rate of waste, and has good economic and social benefits.

 Structure of double roller fertilizer granulator

Main motor: Through V-belt, power is transmitted to reducer, reducer is transmitted through coupling, and then to the drive shaft by a pair of open gears to ensure the synchronization of the two rollers.

The passive roll of the double roller fertilizer granulator is held by the piston of the hydraulic cylinder (the constant pressure type is held by the inclined iron). The pressure of the system is guaranteed by the hydraulic circuit, the hydraulic control valve and the accumulator. The material is evenly entered into the hopper by the storage bin through the quantitative equipment. The material is evenly entered into the middle of the opposite roll by adjusting the gate on the hopper. The unit forming pressure of the compressed material on the counter-rotating roller with equal speed increases from small to large, and the forming pressure at the center line of the roller reaches a larger value. After the material passes through the line, the forming pressure decreases rapidly so that the material enters the over-pelleting state and smoothly pellets off.

The double roller granulator mainly works through the head part: the working part of the contact material is composed of the main slave shaft and the roll skin outside it. The roll skin is covered with uniformly distributed semi-circular pits. The two shafts are driven by gears and rotated relative to each other. The roll skin extrudes powder materials such as mineral powder.

 In addition to mineral powder granulation, roller fertilizer granulator also has unique advantages in NPK fertilizer production process. The roller granulator has comprehensive functions and wide application of materials. It is our main granulation equipment.

[tritorc123]

A Brief Introduction to Hot Tapping & Line Stoppling

Pipelines are a conveyance medium for various fluids that are necessary to keep civilization functional. To keep these critical pieces of infrastructure functional, several tools, accessories and machinery are needed to keep up with the requirements of their maintenance, repair and overhaul cycles.

Productivity is critical for maintaining profitability for the large economies of scale plants that, to provide an example: refine crude oil into various petrochemical products. Various pipeline fluid mediums such as steam, flare gas, crude oil, water, etc. require careful handling while the pipelines carrying them are drilled into and the flow is redirected to a conduit and then to its original destination.

A main pipeline called a ‘mother pipeline’ is the one which has the flowing fluid. The pipes, which the mother pipeline could be connected to are called ’branch pipelines’.

Purpose of Conducting Hot Tapping would be amongst the following:

To remove a damaged or rusted section of pipes

2. To create a conduit for the fluid to another pipeline or avoiding a certain area and reconnecting to the same pipeline.

The Hot tapping machine shown below has the following components:

a) Full Encirclement Fitting or Joints — usually have a pipe flange attached to them.

b) Valve housing — Connected by bolts on the flange

c) Tapping Machine — This is the actual element which shall perform the cutting, it has a drive component or motor that is electrically or hydraulically driven and rotates the Boring Bar that moves back and forth using a hydraulic mechanism. Here the feed and speed can be controlled.

Welded Fittings Different Sizes of Split Tee Fittings

The process involves the following steps:

e) Welding or Bolting the appropriate Joints on the Pipes to be Hot Tapped in minimum number to carry out to the line stopping after hot tapping is conducted.

Split Tee Joint being welded Welded Tees on the Pipes where hot tapping and stoppling is to be carried out and the new conduit is to be connected

Valve Housing being mounted on the relevant Split Tee Joint Smaller Tap with its own valve housing

Cutter with a Pilot Drill is used to remove the Coupon from A Manual Hot Tapping Machine is used to Drill a tap in front of the

the Pipe and it is secured behind the valve gate. actual hot tapping position, this shall be later used for pressure relief

Now that both the taps are opened the pipe sections to be connected, the conduit is inserted and bolted on the valve housings of both, hence continuing the flow of the working fluid.

The Conduit Piping Connects the mother pipeline and ensures that the flow does not stop

Further, the Line Stoppling Machine is attached to the valve housing and the Stopple is extended into the pipe and the flow is obstructed. In Some cases an inflatable bag is used to stop the effervescent fumes from escaping to prevent an explosive environment or asphyxiating gasses from harming workmen or stopping their work. The excess pressure is released from the pipe which is now effectively cordoned off using line stopples.

The Line Stopple is inserted on both sides of the pipe section to isolated and the fluid in between is evacuated

The Damaged or rusted section of the pipe or the desired pipeline modification is initiated.

The evacuated pipeline allows for safe working with the isolated section and new pipe section can thus be added without loss of productivity.

The Line Stopple is now Withdrawn behind the valve gate and the excess gas (if any) is released. The fluid is now free to move through the pipe and hot tapping/line stoppling machines are now withdrawn.

Line Stopple Being Withdrawn Hot Tapping Machine being withdrawn Conduit Pipe Being Withdrawn

The Completion Flanges or blanks are now bolted and the welded fittings/joints are left in place, if the joints are bolted then they are withdrawn.

Completion Flanges are placed ensuring leakages at high pressure are unlikely

Standard Taps Offset Taps Lateral Taps

Special Underwater Sealed Valve Gates and Fittings and Joints ensure leak free hot tapping/ line stoppling material

[industrymachinetools]

A Brief Introduction to Hot Tapping & Line Stoppling

Pipelines are a conveyance medium for various fluids that are necessary to keep civilization functional. To keep these critical pieces of infrastructure functional, several tools, accessories and machinery are needed to keep up with the requirements of their maintenance, repair and overhaul cycles.

Productivity is critical for maintaining profitability for the large economies of scale plants that, to provide an example: refine crude oil into various petrochemical products. Various pipeline fluid mediums such as steam, flare gas, crude oil, water, etc. require careful handling while the pipelines carrying them are drilled into and the flow is redirected to a conduit and then to its original destination.

A main pipeline called a ‘mother pipeline’ is the one which has the flowing fluid. The pipes, which the mother pipeline could be connected to are called ’branch pipelines’.

Purpose of Conducting Hot Tapping would be amongst the following:

To remove a damaged or rusted section of pipes

2. To create a conduit for the fluid to another pipeline or avoiding a certain area and reconnecting to the same pipeline.

The Hot tapping machine shown below has the following components:

a) Full Encirclement Fitting or Joints — usually have a pipe flange attached to them.

b) Valve housing — Connected by bolts on the flange

c) Tapping Machine — This is the actual element which shall perform the cutting, it has a drive component or motor that is electrically or hydraulically driven and rotates the Boring Bar that moves back and forth using a hydraulic mechanism. Here the feed and speed can be controlled.

Welded Fittings Different Sizes of Split Tee Fittings

The process involves the following steps:

e) Welding or Bolting the appropriate Joints on the Pipes to be Hot Tapped in minimum number to carry out to the line stopping after hot tapping is conducted.

Split Tee Joint being welded Welded Tees on the Pipes where hot tapping and stoppling is to be

carried out and the new conduit is to be connected

Valve Housing being mounted on the relevant Split Tee Joint Smaller Tap with its own valve housing

Cutter with a Pilot Drill is used to remove the Coupon from A Manual Hot Tapping Machine is used to Drill a tap in front of the

the Pipe and it is secured behind the valve gate. actual hot tapping position, this shall be later used for pressure relief

Now that both the taps are opened the pipe sections to be connected, the conduit is inserted and bolted on the valve housings of both, hence continuing the flow of the working fluid.

The Conduit Piping Connects the mother pipeline and ensures that the flow does not stop

Further, the Line Stoppling Machine is attached to the valve housing and the Stopple is extended into the pipe and the flow is obstructed. In Some cases an inflatable bag is used to stop the effervescent fumes from escaping to prevent an explosive environment or asphyxiating gasses from harming workmen or stopping their work. The excess pressure is released from the pipe which is now effectively cordoned off using line stopples.

The Line Stopple is inserted on both sides of the pipe section to isolated and the fluid in between is evacuated

The Damaged or rusted section of the pipe or the desired pipeline modification is initiated.

The evacuated pipeline allows for safe working with the isolated section and new pipe section can thus be added without loss of productivity.

The Line Stopple is now Withdrawn behind the valve gate and the excess gas (if any) is released. The fluid is now free to move through the pipe and hot tapping/line stoppling machines are now withdrawn.

Line Stopple Being Withdrawn Hot Tapping Machine being withdrawn Conduit Pipe Being Withdrawn

The Completion Flanges or blanks are now bolted and the welded fittings/joints are left in place, if the joints are bolted then they are withdrawn.

Completion Flanges are placed ensuring leakages at high pressure are unlikely

Standard Taps Offset Taps Lateral Taps

Special Underwater Sealed Valve Gates and Fittings and Joints ensure leak free hot tapping/ line stoppling material

[longbud]

Pet preform mold

#Pet preform mold full#

PET preform mould and its gate design.and all weight(products and runner) is not less than 2 / 3 of machine injection volume. due to the shorter stable time after melting and high melting point, it is necessary to use the injection machine with more multi-step temperature control and less plasticizing friction heat system. The recycled material ratio is generally not more than 25%, and also the reground material should be completely dry. Whether the material is completely dry can be tested by a shot to air. And generally, it is 170 degrees, about 3-4 hours. Dry the drying temperature is 150 degrees, time more than 4 hours.The moisture will decrease the molecular weight of the pet, which would lead to poor color and brittle parts. Pellets in high-temperature water are more sensitive. due to pet macromolecules containing grease, it is hydrophilic. Therefore, it is mainly to change the fluidity of the melt by changing the pressure. The rheological property of PET is better in the molten state, and the pressure effect on the viscosity is greater than that of temperature. At present, the most used kind is PET-GF it is mainly for bottle PET preform manufacturing. PET, also called polyethylene terephthalate, is also known as polyester. PET injection moulding processing introduction PET preform neck finish categories PET preform specification Our PET preform mould incorporates world state-of-the-art bi-axis insert alignment and self-lock system in line with global best practices. We imported the heating band for the preform mould from Germany. Moreover, the Heater System is utilized to increase the hot-runner plate’s heating capacity with long life and effectiveness.

#Pet preform mold full#

Heat coils keep the nozzles at a constant temperature through the full cycle time. The Dual Heating and Cooling system can ensure that the result of heating and cooling is excellent and quality control is reliable. Using a Pin-valve type of Hot Runner System for the PET preform mold, this type of Hot Runner System is effective in reducing processing times, reducing part wear & tear and lowering gate trim costs, and at the same time cutting electricity consumption. The application of this system does not affect the longevity of the PET mould throughout its useful life It is possible to make a difference in preform’s wall thickness of less than 0.006 mm by utilizing the Off-Center Correction Technique. Correction Technique for Core Off-Centered.Each particular water channel was specially processed to minimize the chance of jamming. It is important to design a preform mould so that the most appropriate steel and processes will be utilized to make it economically feasible for the manufacturer to manufacture the PET preforms.Īn especially designed set-up of water cooling channels combined with special finishing reduced the overall cycle time. Typically, to fulfill the requirements for designing a PET preform Mould for production, a preform mold must have functional strength, possess sales appeal, be competitively priced, and fulfill practical characteristics. High price: Pneumatically-driven valve, shut off nozzle.The nozzle pin is connected to the hydraulic cylinder (Japanese or European Origin) and designed to be synchronized with the PET preform mould plates movement.Innovative water hoses have been developed to reduce the leaking and reduce water spots on the preforms.Patented correcting technique allows for better control of thickness and reduces possible the preform thickness disorder that might occur during preform injection molding.Its excellent hardness, superior polish, anti-rust and accuracy make it an excellent choice for PET preform moulds making. ASSAB s136or DIN 1.2316 steel is used for mould impression and insert and for the slide insert because the steel is the best available quality and precision.The global criterion screw neck was developed with premium nitride steel to increase its durability and hardness at the same time.Moldflow analysis diminishes the amount of NG you can see.Over 2.5 million injections of the same quality preforms held over the course of his lifetime.Developed on the premise of the latest technological developments, state-of-the-art preform mould construction has been designed in consultation with European mould style.The cavity number of PET molds ranges between 1 and 96.It was a pleasure working with him.” Topworks PET preform mould features: “Steven is a very detail-oriented project manager and engineer who can solve problems creatively and also provides excellent service.

[carbovalve]

Press Ball Valve

https://www.carbovalve.com/products/press-ball-valve/

The main features of the press ball valve are its compact structure, reliable sealing, simple structure and convenient maintenance. The sealing surface and the spherical surface are often in a closed state, which is not easy to be eroded by the medium. The press fit ball valve is easy to operate and maintain, and is suitable for water, solvents, acids and natural gas. The working medium of this ball valve is also suitable for the medium with harsh working conditions, such as oxygen, hydrogen peroxide, methane and ethylene, etc., which are widely used in various industries. Apart from brass ball valve, we also provide globe valve for sale and other kinds of valves.

 Press Ball Valve Details:

Solid forging Lead Free DZR brass

Full port

Friendly leak detection feature

Blow-out proof stem

Easy installation without flame

Reliable design compatible with major press tools

High corrosion resistance DACROMET treated handle

 Press Ball Valve Specifications

Press Ball Valve

 Code

Size

1ASE103

1/2"

1ASE104

3/4"

1ASE105

1"

2BRAc10

1.1/4"

2BRAc12

1.1/2"

2BRAc14

2"

   Carbo Press Ball Valve Features

 Press Ball Valve Performance Rating

Maximum working pressure: 250PSI

Maximum working temperature: 203oF

 Press Ball Valve Certification

CUPC and NSF61 Approved

Conform to NSF/ANSI/CAN 372

 Press Ball Valve Leak Detection design

Unique O-ring design helps plumber easily detect any joint is not pressed

The design will allow system leakage before pressing

 Push ball valve is also available here

   Press Ball Valve FAQs

Press Ball Valve FAQsFAQS

Press Ball Valve FAQsWhat is press ball valve?

Mainly used in hydraulic machinery equipment, hydraulic switches, natural gas, etc, a press ball valve is a common kind of bronze ball valve in which the opening and closing part (ball) is driven by the valve stem and rotates around the axis of the valve stem.

 Press Ball Valve FAQsHow much is a 2 inch press ball valve?

We are committed to providing customers with high-quality 2 press ball valve and the water ball valve price is very favorable. If you are interested in other kinds of brass ball valves such as brass ball valve with drain, pex ball valve and so on, please feel free to contact us.

 Press Ball Valve FAQsWhat is a press ball valve used for?

Press fit ball valve is mainly used to cut off or connect the medium in the pipeline, and can also be used for fluid adjustment and control. Among them, the hard-sealed V-shaped gate valves for sale have a strong shear between the V-shaped core and the metal seat of the hard alloy. Shearing force is especially suitable for media containing fibers and tiny solid particles.

 Bronze Ball Valve vs. Brass Ball Valve

The two most common materials used to make different types of ball valves are bronze and brass. This is due to the fact that both metals are quite ductile. They are all made artificially from natural metallurgical elements: brass is made primarily of copper and zinc, while the other is primarily made of copper and tin. Each metal has a unique set of benefits for the bronze pressure regulating valve.

 One disadvantage of bronze is that it can only be manufactured through the casting or machining of cast ingots. Bronze's rough appearance—known as pores and shrinkage cavities—is a direct result of casting. On the plus side, bronze types of ball valves in plumbing are less expensive than brass ball valves. It is tougher, and more resistant to corrosion, particularly in corrosive substances similar to seawater.

 Because different combinations of copper and zinc can produce brass with different properties, brass ball valve is more ductile and functional than bronze ball valve. Brass is also an excellent material for manufacturing because it can be cast, forged, hot extruded, or cold drawn. Its machinability is excellent, and its smooth surface contributes to cost savings.

[sixtyfivehundredmiles]

What happens when Lake Superior has too much water? It dumps it into an already overflowing Lake Michigan

For nearly a century, a dam at the head of the St. Marys River near Sault Ste. Marie, Mich., has been used like a faucet, controlling the amount of water flowing from Lake Superior into lakes Michigan and Huron.

In the past five years, following a swift rise in lake levels, the relatively obscure Lake Superior board that regulates the amount of water released has stepped up these discharges, raising an outcry from a group representing property owners along the shoreline of Lake Michigan and potentially harming seasonal tourism.

John Ehret, an Olympia Fields, Ill., resident and a director of the Great Lakes Coalition for Shoreline Preservation, occasionally shows people photos of the broad sandy beaches that once existed outside his cabin in western Michigan. Now, Ehert said, many of his neighbors have fortified their home with boulders, and his property is “damn near in the water.”

Several factors have contributed to rising water levels and shoreline erosion, including increased precipitation and runoff, but Lake Superior outflow is exacerbating the problem, data from the National Ocean Atmospheric Administration and the International Lake Superior Board of Control show. Last year, the amount of water released from Lake Superior into lakes Michigan and Huron was the highest in 32 years.

This month, Lake Superior measured about 9 inches above its long-term average but almost 5 inches below its levels from last July. Lakes Michigan and Huron were recorded at nearly 2 feet above their historic average and a half inch higher than a year ago. Still, the Lake Superior board expects to increase the flow to 2,800 cubic meters per second this month — more than enough to fill an Olympic-size swimming pool each second — and above the amount called for in the most recent regulatory plan for balancing the lakes.

“They have no right ...,” Ehret, 88, said. “They are having the same problem we are. They've lost a lot of their sand. What they want is to lower their lake and dump it downstream — and we don't want it!”

U.S. officials say the elevated discharges aren’t simply an attempt to drive down Lake Superior’s levels, highlighting the need to accommodate hydropower plants, downstream fish-spawning habitat and commercial shipping.

The St. Marys River runs between Michigan's Upper Peninsula and Ontario, passing through a network of canals, hydropower plants and a dam with 16 steel control gates, which are regulated by the Lake Superior control board, a binational entity that determines how much water is released into the rapids. The board assumes the daunting responsibility of balancing the socio-economic and environmental interests of Lake Superior with those of lakes Michigan and Huron, which are considered one body of water because they are connected at the Straits of Mackinac.

Although Lake Superior’s flow has been fully regulated since 1921, scholars say it wasn’t until a period of high lake levels in the mid-1970s that the board adopted regulatory strategies that considered lakes Michigan and Huron.

John Allis, chief of Great Lakes hydraulics and hydrology for the Army Corps of Engineers, acknowledged the increased flow from Lake Superior can translate into a few inches of change in lakes Michigan and Huron but said the changes are insignificant.

“It’s very important to note that the deviations do not call for increasing flows only or decreasing flows only,” Allis said in an email. “We balance the flows over the year to balance total outflow and therefore have very minimal impact on water levels. One way to think of the deviations is as a method that serves to reduce adverse local effects while not affecting the Lakes overall.”

But according to Lake Superior board records, in the past five years, there has only been one month when Lake Superior flows were below the historical average.

Illinois state coastal geologist Ethan Theuerkauf said inches matter.

“You have to think about the slope,” Theuerkauf said. “If you’re talking a couple inches against a heavily armored bluff, you might not be impacting the shore that much. If lake levels are encroaching on a sandy shore and waves are moving farther up, a couple inches could have a profound impact.”

Dramatic swings in water levels

In January 2013, Lake Michigan hit a record low. Immediately afterward, it saw an unprecedented two-year rebound boosted by wetter-than-normal conditions and back-to-back polar vortex winters, which froze over much of the Great Lakes and prevented evaporation.

In the last century, Illinois has become 1.2 degrees warmer and 10 to 15 percent wetter, with much of the added water from heavy rainfalls or thunderstorms, according to state climatologist Jim Angel.

But scientists are divided over how climate change will affect the Great Lakes over the long term.

Rising lake levels

In 2015, amid the ongoing stretch of rising water levels in the Great Lakes, the control board implemented a modified regulatory plan that allows it to make small deviations to the amount of water released from Lake Superior without oversight.

Brig. Gen. Mark Toy, the U.S. chairman of the control board and Army Corps commander in the Great Lakes region, said the plan takes the entire region into consideration.

“Outflows from Lake Superior are currently set to help balance water level conditions and their related impacts to all stakeholders on Lake Superior, the St. Marys River, and Lake Michigan-Huron,” Toy said in an email.

Lake Superior discharges have been proven capable of shaving as much as 4.7 inches off lake levels in one month, which is greater than some of the highest rates of monthly evaporation, according to the International Joint Commission, the organization that oversees the control board and handles water disputes between Canada and the United States. For every inch Lake Superior can be lowered by water passed through the St. Marys River, lakes Michigan and Huron can rise a half inch, experts say.

Late last year, as Lake Superior swelled to nearly 4 inches shy of its record high set in 1985, the board ordered the highest discharges since it began adhering to the 2015 plan. Monthly outflows surged to more than 35 percent above historical averages for July, August, October and November. By April, aided by drier than usual conditions, Lake Superior had dropped more than one foot.

Now, with higher discharges expected to continue through November, some property owners on the lower lakes are watching the shoreline closely.

“The challenge is: How do you distribute the water between Lake Superior and Michigan,” said Roger Smithe, a spokesman for the Great Lakes Coalition for Shoreline Preservation, an organization that represents about 900 shoreline-property owners mostly from Michigan, Illinois, Wisconsin and Ohio. “Lately, we've seen articles about sharing the pain, but we think Lake Michigan shares most of the pain. We think Lake Michigan is a dumping ground for extra water.”

The Saugatuck, Mich.-based coalition has complained about a lack of public input and has written to the control board asking for an explanation about why more water continues to be released.

While control board representatives have stressed they have minimal control of Upper Great Lakes water levels, the consortium of Canadian and American decision-makers, which has historically been charged with keeping Lake Superior within predetermined high and low levels, has been known to open more dam gates if Lake Superior encroaches on those extremes.

Lakes Michigan and Huron have no such safety valve. The 6.3-foot range between their 1986 record highs and 2013 record lows is the largest of all the Great Lakes. By comparison, Lake Superior’s historic variability has been less than 4 feet.

Anxiety along Lake Superior

Despite help from the control board, the consequences of shoreline erosion are drastic along Lake Superior.

On the northern shores of Michigan’s Upper Peninsula, Tim and Susan Biehl have seen Lake Superior’s rising water overtake beaches, inundate sections of shoreline parks and in some cases claim entire homes.

“Cabins built 50, 60 years ago have gone into the lake,” said Tim Biehl, 71, who noted the water reaches to the tree line in some places. “You can walk down the north shore, and the number of trees on the beaches is phenomenal.”

After several years of anxiously watching the waters draw closer to their home, the Biehls and their neighbors joined a chorus of Yoopers calling for more discharges downstream.

“We’re just a bathtub to store water,” Tim Biehl said.

But that doesn’t sit well with Lake Superior’s southern neighbors who have their own complaints.

Every summer, for more than 30 years, Darcy Haury’s family has driven from suburban Chicago to stay at a vacation rental a few miles outside St. Joseph, Mich. Last year, she arrived at the cabin to find the beachfront where she had enjoyed building sand castles as a child was largely underwater. The stairs leading to the private shoreline had apparently been beaten into splintered timbers by a storm, and they were later told by management that the beach was closed.

Next month, relatives plan to return to the annual family tradition. But it could be the last time they go there.

“It's pretty depressing because it’s my favorite time of year,” said Haury, 28, of Bolingbrook. “Now we’re looking for somewhere else to go.”

Shrinking beaches

Along Illinois' 63-mile shoreline, there has been no shortage of issues.

In Evanston, though beaches have shrunk and the dog beach is completely submerged, the city has found that buying and importing sand to replenish beaches isn't a sound investment.

"That's not in our budget," said Lawrence Hemingway, Evanston's parks and recreation supervisor. "That's money that can wash away overnight"

Highland Park's Rosewood Beach, which was named among the nation's best restored beaches in 2016, was blitzed by powerful storms in April, which caused significant damage. In Chicago's Roger's Park neighborhood, Juneway Beach is all but submerged. And over the years, erosion has gnawed away at the shoreline walking trail at Illinois Beach State Park.

It's unclear if this has had an impact on tourism or recreation, but it certainly affects a visitor's experience, according to Diane Tecic, director of the Illinois Department of Natural Resources' coastal management program.

"Even with the high lake levels, I doubt people will just say, 'I'm just not going to go to the beach,'" Tecic said. "But it could shift where they go.”

Lake Michigan’s erosion issues have also been greatly complicated by development, which has cut off the natural flow of sand along much of the southern shores of Illinois, Indiana and Michigan. As a result, the sand washing from the shores isn’t being replenished.

At Illinois Beach State Park, state geologist Theuerkauf has extensively monitored the shoreline since 2014. In that time, he’s seen as much as 75 feet of shoreline chewed away in a year by Lake Michigan waves and storms.

Theuerkauf said this shoreline loss is unprecedented.

“Five hundred years ago this wetland would’ve been protected by a beach ridge further out.” said Theuerkauf, who has researched and dated the habitat. “Now, 500 years’ worth of shoreline is eroding in a matter of months.”

Under [these circumstances,] even though Lake Michigan’s lake levels are 1 ½ feet below the highs of 1986, the coastline continues to endure accelerated erosion as waves crash further inland.

“Sure, this has happened before,” Theuerkauf said about rising lake levels. “But now we’re permanently losing habitat, and things are always a little different the next time around. Because if the landscape changes, the outcome becomes different.”

Urgency versus history

Smithe, the Great Lakes coalition spokesman who lives in Manistee, Mich., said the alarming reality only requires a glance out the window for many of the group’s members.

In recent years, Smithe has thumbed through nearly 30-year-old documents from the International Joint Commission detailing several proposed solutions to handle high lake levels, which he said weren’t followed up on. Though he’d like to get more information on what can be done, he said the looming threat requires more immediate action.

“We don't need another study,” Smithe said. “We need action on one of the last studies.”

Drew Gronewold, hydrologist for NOAA’s Great Lakes Environmental Research Laboratory, said he can empathize with the sense of urgency that exists in the community during these high water levels. But he noted that a rush to judgment could easily put policymakers in a pinch down the road, cautioning people to remember the lakes’ history.

“Lake Michigan hit a record low in January 2013 and hit a record high in 1986 and a record low 1964. And there were discussions in what to do in those situations, which are [very] similar to those happening today. We should take time to look back at the resolutions for some insight for an appropriate pathway forward.”

For some, waiting and hoping the lake will subside is their only option.

Ehret, the coalition director with a lakefront cabin in Stevensville, Mich., typically splits his time between his home in Chicago’s south suburbs and his western Michigan hideaway. This year, he hasn’t gone to the cabin, and he’s not sure if he will.

“We usually go up there with our grandchildren,” Ehret said. “But with our house leaning into the lake, I don’t think they want to go. Last year, we had no beach.”

Lake Superior Board of Control’s annual public webinar/teleconference will be held 11 a.m. to noon central time on Thursday, July 19. The public can dial into the meeting at 1-877-413-4782, followed by this passcode: 3402087 or watch online here.

Click here for a video explaining how the Soo Locks work

(source: Chicago Tribune)

[uflow-pneumatic]

All About Pneumatic Actuators

Pneumatic actuators use air power to produce rotary and linear motion. In the broadest sense, an air cylinder is a pneumatic actuator. For the purpose of this article, pneumatic actuators that are intended to produce rotary motion for operating valves, for automating manufacturing, for clamping work, etc. are the primary focus. Their use in linear applications such as valve operating and positioning is also discussed. Air cylinders, in general, are not covered. For information on other types of actuators, please see our related Actuators Buyers Guide.

Pneumatic rotary actuators Pneumatic rotary actuators rely on a variety of mechanisms to produce rotary motion. Two common styles use pistons or diaphragms. In one style, the piston moves a rack past a gear pinion, rotating the pinion to produce a limited range of rotation at the output shaft. Another style uses a scotch yoke, a well-known kinematic link, to produce up to 90° of rotation of the output shaft. A third method uses no pistons or diaphragms but instead employs one or two vanes that are pressurized to produce rotary motion directly within a round housing.

Rack-and-pinion styles use at least one, and sometimes two or four, cylinders to drive the rack(s) past the pinion. The pinion rotates in response, driving the output shaft. A rack-and-pinion actuator will continue to revolve the pinion until it reaches the end of the stroke, although modulation is possible. In many instances, the pistons in the cylinders will work against large coil springs which provide the valve with the capacity to return to a safe position during a power interruption. Diaphragms are sometimes used in place of pistons but the operating principle remains the same. The number of revolutions a rack-and-pinion actuator can make is limited only by the length of the rack.

Scotch-yoke actuators are usually limited to 90° of rotation and see applications in quarter-turn valves. Pneumatic vane actuators can produce rotations in excess of 360°.

Pneumatic actuators work with on/off valves such as ball valves. They can be adapted to work with control valves as well. Control valves necessarily need to be positioned at intermediate locations in order to regulate fluid flow. Modulating pneumatic actuators are available for this task. Typically, a 3-15 psi industry-standard air pressure signal is sent to a modulating positioner at the valve, which adjusts (in the case of a quarter-turn valve) the valve stem anywhere between 0 and 90° depending on downstream flow measurements. Electro-pneumatic positioners do the same thing using electrical signals.

Motion-control applications using pneumatic rotary actuators generally fall into the rack-and-pinion or vane styles. Often, double-acting rack-and-pinion arrangements are used. Multi-position actuators, with three, four, or five stops, are often used for sequential assembly operations. Rotary actuators may also be used for indexing, stepping, and pick-and-place motions.

Pneumatic linear actuators Pneumatic linear actuators are used on rising-stem valves to directly operate the gate, globe, etc. Two types are normally used, the diaphragm and the piston. Diaphragm styles are popular as their wide surface areas can produce tremendous force with moderate air pressure. The diaphragm is a rubber membrane whose rim is sealed to the outer casing of the actuator. Air pressure displaces the diaphragm up or down against spring pressure depending on whether the actuator is designed to fail open or fail closed. Stroke lengths are generally shorter than piston valves where strokes are dependent only on the length of the cylinder, not the amount of stretch the diaphragm can tolerate. Piston style actuators can be sized to produce an appropriate actuating force based on the pressure of available air and can be manufactured in double-acting and spring-return styles. Some linear actuators use the familiar air springs in place of diaphragms.

As globe valves are common for control applications, modulating linear actuators are available. Pneumatic modulating valves are particularly effective because their speed is adjustable by throttling the airflow. Thus, a pneumatic actuator can speed quickly toward a setpoint but slow as it reaches it, eliminating overshoot. Unlike electric actuators, pneumatic actuators can run continuously.

Combination rotary/linear actuators The ability to provide both linear travel and limited rotation is handy in certain applications such as work holding. Clamps can be raised and swung clear of a workpiece to allow its removal and then pressurized and reengaged once a new workpiece is positioned.

Applications Air-powered actuators are a proven method of obtaining rotary and linear motion. For valve actuation, both on/off and control, air provides a reliable, safe, economical method. Discounting the cost of furnishing compressed air itself, air actuators are usually more cost-effective than electric actuators up to a certain diameter valve. As valves become larger, the economics begin tilting more in favor of electric actuators.

Electrical valve actuators are being employed with greater frequency. Still, pneumatic actuators have their proponents due to their simplicity, ruggedness, and ease with which they are made fail-safe. They can move faster than electric actuators and are not subject to duty cycles. Efforts to make traditional pneumatic and hydraulic actuators more compatible with distributed control systems are ongoing.

Rotary actuators are used in many motion-control systems to operate, for instance, pick-and-place handlers or clamps. Linear air cylinders have long been a staple of automation and continue to be so despite the influx of sophisticated stepper- and servo-motor driven electrical actuators. While their primary application is in point-to-point moves, cylinders equipped with feedback are enabling servo-pneumatic actuators to handle positioning applications that are too fine for ordinary cylinders yet too coarse for electrical actuators. Such devices can provide high forces in small packages and can operate continuously without heat buildup. Part of their development has been in figuring out control algorithms that can account for the compressibility of air, which has always made air cylinders better for point-to-point motions.

For more information please visit: www.uflow-pneumatic.com

[keenobservationtiger]

Making process control valve choices

Today’s process control valves offer an ever wider range of features and benefits for industries that require precise control over fluids, steam and other gases. With so many control valves to choose from it is important to establish the features that will deliver the most cost-effective design for a particular application.

Control valves are used to manage the flow rate of a liquid or a gas and in-turn control the temperature, pressure or liquid level within a process. As such, they are defined by the way in which they operate to control flow and include globe valves, angle seat, diaphragm, quarter-turn, knife and needle valves, to name a few. In most cases the valve bodies are made from metal; either brass, forged steel or in hygienic applications 316 stainless steel.

Actuators will use an on-board system to measure the position of the valve with varying degrees of accuracy, depending on the application. A contactless, digital encoder can place the valve in any of a thousand positions, making it very accurate, while more rudimentary measurements can be applied to less sensitive designs.

One of the main areas of debate when specifying globe control valve is determining the size of the valve required. Often process engineers will know the pipe diameter used in an application and it is tempting to take that as the control valve’s defining characteristic. Of greater importance are the flow conditions within the system as these will dictate the size of the orifice within the control valve. The pressure either side of the valve and the expected flow rate are essential pieces of information when deciding on the valve design.

Inside the valve body, the actuator design is often either a piston or a diaphragm design. The piston design typically offers a smaller, more compact valve which is also lighter and easier to handle than the diaphragm designs. Actuators are usually made from stainless steel or polyphenolsulpide (PPS), which is a chemically-resistant plastic. The actuator is topped off by the control head or positioner.

Older, pneumatically operated positioners had a flapper/nozzle arrangement and operated on 3-15psi, so no matter what the state of the valve, open closed or somewhere in between, the system was always expelling some compressed air to the atmosphere.

Compressed air is an expensive commodity, requiring considerable energy to generate and when a manufacturing line is equipped with multiple process control valves all venting to the atmosphere, this can equate to a considerable waste of energy. It is important to not only establish the most appropriate valve design, but also a cost-effective solution that takes account of annual running costs.

Modern, digital, electro-pneumatic valves that use micro-solenoid valves to control the air in and out of the actuator have introduced significant improvements for operators. This design means that while the valve is fully open, fully closed or in a steady state, it is not consuming any air. This, and many other engineering improvements, have made substantial advances in both economy and precision.

Flexible designs

Valve seats can be interchangeable within a standard valve body, which allows the valve to fit existing pipework and the valve seat to the sized to the application more accurately. In some cases, this can be achieved after the valve has been installed, which would enable a process change to be accommodated without replacing the complete valve assembly.

Selecting the most appropriate seal materials is also an important step to ensure reliable operation; Steam processes would normally use metal-to-metal seals, whereas a process that included a sterilization stage may require chemically resistant seals.

Setting up and installing a new valve is now comparatively easy and much less time-consuming. In-built calibration procedures should be able perform the initial setup procedures automatically, measuring the air required to open and close the valve, the resistance of the piston seals on the valve stem and the response time of the valve itself.

Improving safety

Control valves should be specified so they operate in the 40-85% range so if the valve is commanded to a 10% setting, it can detect if something has potentially gone wrong with the control system and the best course of action is to close the valve completely. If the valve is commanded to a position of 10% or less this can cause very high fluid or gas velocities, which have damaging effects on the system and cause considerable noise and damage to the valve itself.

Modern control functionality can offer a solution that acts as a safety device to prevent damage to the process pipework and components. By building in a fail-safe mechanism, any valve position setting below a pre-set threshold will result in the valve closing completely, preventing damage to the surrounding system.

Control inputs can also include safety circuits to ensure safe operating conditions within the process equipment. For example, if an access panel on a vessel containing steam is opened, an interlock switch will open and the valve controlling the steam supply to the vessel can be automatically closed, helping mitigate any risks.

Improving reliability

Many process control environments offer less than ideal conditions for long-term reliability. Moisture-laden atmospheres, corrosive chemicals and regular wash-downs all have the capacity to shorten the service life of a process Self regulating control valve. One of the potential weaknesses of the actuator is the spring chamber where atmospheric air is drawn in each time the valve operates.

One solution is to use clean, instrument air to replenish the spring chamber, preventing any contamination from entering. This offers a defense against the ingress of airborne contaminants by diverting a small amount of clean control air into the control head, maintaining a slight positive pressure, thus achieving a simple, innovative solution. This prevents corrosion of the internal elements and can make a significant improvement to reliability and longevity in certain operating conditions.

While choosing the most appropriate process control valve can be a complex task, it is often best achieved with the assistance of expert knowledge. Working directly with manufacturers or knowledgeable distributors enables process control systems to be optimized for long-term reliability as well as precision and efficiency.

Damien Moran is field segment manager, Hygienic – Pharmaceutical at Bürkert. This article originally appeared on the Control Engineering Europe website. Edited by Chris Vavra, associate editor, Control Engineering, CFE Media and technology, cvavra@cfemedia.com.

Control valves are generally present whenever fluid flow regulation is required. The three way and angle control valve reliability is critical to the control quality and safety of a plant. An improved dynamic and static valve behaviour would have a major impact on the process output. In order to assess the dynamic performance of the control valve, a computer model of an electro-hydraulic control valve is developed. And the control valve characteristics are investigated through the use of mathematical simulations of the control valve dynamic performance. The results show that the electro-hydraulic driven control valve, which is developed to regulate the mixed-gas pressure in combined cycle power plant, can meet the challenge of the gas turbine.

Control valves play important roles in the control of the mixed-gas pressure in the combined cycle power plants (CCPP). In order to clarify the influence of coupling between the structure and the fluid system at the control valve, the coupling mechanism was presented, and the numerical investigations were carried out. At the same operating condition in which the pressure oscillation amplitude is greater when considering the coupling, the low-order natural frequencies of the plug assembly of the valve decrease obviously when considering the fluid-structure coupling action. The low-order natural frequencies at 25% valve opening, 50% valve opening, and 75% valve opening are reduced by 11.1%, 7.0%, and 3.8%, respectively. The results help understand the processes that occur in the valve flow path leading to the pressure control instability observed in the control valve in the CCPP.

1. Introduction

The steel mills generate vast amounts of blast furnace gas (BFG) and coke-oven gas (COG) in the production. In order to reduce the environmental pollution, some steel mills mix BFG with COG and build combined cycle power plants (CCPP) to make use of the gas [1]. For the normal operation of CCPP, the pressure of mixed gas delivered to the gas turbine should be kept in a steady range.

In CCPP, control valves play important roles in the control of the mixed-gas pressure. The signal of mixed-gas pressure measured using the pressure meter is compared to the signal of the desired pressure by the controller. The controller output accordingly adjusts the opening/closing actuator of the control valve in order to maintain the actual pressure close to the desired pressure. The opening of the control valve depends on the flow forces and the driving forces of the control-valve actuator, while the flow forces and the driving forces are affected by the valve opening. Therefore, there is strong coupling interaction between the fluid and the control valve structure.

According to Morita et al. (2007) and Yonezawa et al. (2008), the typical flow pattern around the Knife Gate Valve is transonic [2, 3]. When pressure fluctuations occur, large static and dynamic fluid forces will act on the valves. Consequently, problematic phenomena, such as valve vibrations and loud noises, can occur, with the worst cases resulting in damage of the valve plug and seal [4]. In order to understand the underlying physics of flow-induced vibrations in a steam control valve head, experimental investigations described by Yonezawa et al. (2012) are carried out. Misra et al. (2002) reported that the self-excited vibration of a piping system occurs due to the coincidence of water hammer, acoustic feedback in the downstream water piping, high acoustic resistance at the control valve, and negative hydraulic stiffness at the control valve [5]. Araki et al. (1981) reported that the steam control-valve head oscillation mechanism was forced vibration, while self-excited vibration was not observed [6].

Those studies cited previously are mainly aimed at the modeling of the self-excited vibration, the analysis of vibration parameters stability, and so on [7–11]. Whereas, the studies on the influence of nonlinear fluid-structure coupling of control valve on the valve control characteristics, such as the pressure regulation feature, are still very limited [12–17]. In the CCPP, the valve control characteristics affected by the fluid-structure coupling are particularly important for the stability of the mixed-gas pressure control. It has not been uncommon to see that the instability of the mixed-gas pressure causes a severe disturbance or even an emergency shutdown of the whole plant, and the handling of such an emergency often becomes a source of new problems and confusion. In this paper, numerical investigations are carried out to clarify the influence of fluid-structure coupling of control valve on not only the flow field but also the gas pressure regulation and the natural frequency changes of the control valve. This study helps understand the processes that occur in the valve flow path leading to the mixed-gas pressure pulsations, which is valuable for the pressure stability control of the mixed gas in the CCPP.

[josiahmieo]

Importance of using the valves

In industries that use automation, there are always input, and output variables, and vibrations cause deviations that affect production stability and quality.

The principle of operation of the valve is that there is a pressure difference. From another perspective, it can be considered the opposite of a bomb, but when they are placed, the pressure increases, and the former decreases.

The general equations governing the behaviour of incompressible fluids passing through the control valve are:

The Industrial Valve is an important factor in the automation of industrial processes in regulation because its function allows the flow rate to be changed.

The interior of the control loop is as important as the main elements, transmitters, and controls. The control valve consists of a body and a servo motor. Among them are shutters and seats provided by flanges for connecting to pipes.

The obstructer performs the function of controlling the flow of fluid and can act in its own axis or make a rotational movement. It penetrates the body cover and is attached to the stem driven by the servo motor.

Flow control of fluid power systems is important because the speed of movement of hydraulically driven machines depends on the state of the pressurized liquid. It can also be operated manually, hydraulically, electrically, or pneumatically.

Valve type

Several types of the Trunnion ball valve are used in the industry dealing with automated processes, but they depend on the design of the body and the movement of the plugs. Those that move in the direction of your axis are categorized as gloves, angles, three ways, gates, cages, or Y-valves.

The glove valve can be a single seat or double seat and a balanced plug. In the first case, a larger actuator is needed to close against the differential pressure of the process. It is used when the fluid force is low and leakage in the closed position must be minimized. A hermetic seal can be achieved as long as the shutter has a Teflon washer.

Another type is commonly used to mix fluids or to divert flow between two outlets, which are usually considered three-way valves involved in heat exchanger temperature control.

Test improvements

It is believed that more than 60% of  Double block and bleed valve  installed in the industry have performance problems, most of which can be fixed without removing the equipment from the process line.

Internal parts

Removable metal parts that are in direct contact with the fluid are considered internal parts of the valve. These parts are the stem, packing, packing collar, guide ring, plug, and seat.

It should be noted that the latter also has the function of closing the flow of fluid, forming the “heart of the valve” by controlling the flow thanks to the variable passage orifice formed when the relative position changes. Plugs and seats are usually made of stainless steel. This is because the material is resistant to corrosion and fluid erosion.

Control and tightness

Each control valve must be designed and selected to provide reliable operation and control under the specified design and operating conditions.

[chemicalsmarketreport]

Growing Use in Food & Beverages Industry Driving Control Valves Market

In 2017, the control valves market generated $11,137.0 million and is predicted to attain$16,057.5 million by 2023, registering a 6.3% CAGR during the forecast period (2018–2023). The market is growing due to the rising need for wireless infrastructure to monitor and control equipment, increasing infrastructure projects, surging use in the food & beverage industry, and high energy demand because of increasing population. A physical device which is utilized for controlling the flow of fluid by varying the size of the flow passage with the aid of a controller is called a control valve. When actuation technology is taken into consideration, the control valves market is categorized into electric control valve, manual control valve, hydraulic control valve, and pneumatic control valve. Among these, the pneumatic control valve category held the largest share of the market during the historical period (2013–2017), accounting for a volume share of over 35.0% in 2017, and is further predicted to retain its position during the forecast period. This is because these valves are simple to operate, offer precise linear motion, and can be utilized in a wide range of temperatures. Get the sample pages of this report at: https://www.psmarketresearch.com/market-analysis/control-valves-market/report-sample A key driving factor of the control valves market is the rising need for wireless infrastructure for monitoring and controlling equipment in different industries, such as power plants and oil & gas. Companies face difficulty in maintaining different units in large scale oil fields, which has resulted in the increasing usage of wireless infrastructure, including automated valves. These valves can be controlled from the central control unit. Attributed to these factors, various units of oil & gas facilities are being fitted with these valves that are controlled remotely. The rising usage of control valves by the food & beverages industry is another key driving factor of the control valves market. Due to the increase in disposable income, people are increasingly spending their income on processed foods, which, in turn, has led to a growth in the number of food processing plants. These plants make use of control valves in different units. The commonly utilized valves in this industry are check, globe, and gate valves. Moreover, butterfly and ball valves are used by the dairy processing industry for preventing leakage and contamination. Hence, the market is being driven by the increasing utilization of control valves in the food & beverages industry and rising requirement for wireless infrastructure to control and monitor equipment.

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Industrial Valves Market Scenario Highlighting Major Drivers & Trends, 2027

Industrial valves are devices that control the flow and pressure of liquids and gases within a system. Valves are used to control the flow of liquids and gases in the piping systems and it should be checked consistently to avoid any risks such as leakage and corrosion. On the other hand, valves used in industries can be operated manually or automatically.

Growth of industrial valves market is driven by increasing demand in industries such as oil and gas, wastewater and power among others. The government of developing countries such as Brazil, India, and China among others is investing heavily in pipeline infrastructure development mainly in oil and gas sector, which is expected to drive the installation of industrial valves over the forecasted period. This result in higher demand of valves used in valve actuators namely, electrically, hydraulically and pneumatically among others in different industry verticals. Moreover, continuous generation of power via existing and old power plant is also driving the demand for industrial valves market in power sector.

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Some of the major restraints for industrial valves market are price war among vendors and strict government regulations and policies in the market. The participation of cross-industry vendors in the industrial valves market is also escalating the competition among valve vendors. For instance, pump and filtration vendors are offering valves along with the core valve vendors. However, the companies would have to develop specialized products in order to bring about product differentiation and produce higher margin valves which will be less vulnerable to competition.

The main types of industrial valves includes are ball, globe, gate, and butterfly valves among others Ball valves are used in rotational motion to start, stop or throttling the flow of fluids in the system. The industrial valves market can be further segmented by end use industries such as oil and gas, chemical and power among others. The growth in revenues of the industrial valves market is observed with multiple factors such as increased sale of industrial valves in building new infrastructure development and utilities globally. In addition, repairs and renovation in the existing infrastructure also drives the growth of industrial valves market.

Some of the key players operating in the industrial valves market are Pentair ltd, Flowserve Corporation, Emerson Electric Co, FMC Technologies, Alfa Laval AB, L&T Valves Ltd, IMI plc, Crane Co, AVK Group, Tyco International, Kitz Corp, Circor International, Inc., Curtiss-Wright Corp. and Cameron International Corporation among others.

This research report analyzes this market on the basis of its market segments, major geographies, and current market trends. This report provides comprehensive analysis of

Market growth drivers

Factors limiting market growth

Current market trends

Market structure

Market projections for upcoming years

This report is a complete study of current trends in the market, industry growth drivers, and restraints. It provides market projections for the coming years. It includes analysis of recent developments in technology, Porter’s five force model analysis and detailed profiles of top industry players. The report also includes a review of micro and macro factors essential for the existing market players and new entrants along with detailed value chain analysis.

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Reasons for Buying this Report

This report provides pin-point analysis for changing competitive dynamics

It provides a forward looking perspective on different factors driving or restraining market growth

It provides a six-year forecast assessed on the basis of how the market is predicted to grow

It helps in understanding the key product segments and their future

It provides pin point analysis of changing competition dynamics and keeps you ahead of competitors

It helps in making informed business decisions by having complete insights of market and by making in-depth analysis of market segments

It provides distinctive graphics and exemplified SWOT analysis of major market segments

Note: Although care has been taken to maintain the highest levels of accuracy in TMR’s reports, recent market/vendor-specific changes may take time to reflect in the analysis.

This study by TMR is all-encompassing framework of the dynamics of the market. It mainly comprises critical assessment of consumers' or customers' journeys, current and emerging avenues, and strategic framework to enable CXOs take effective decisions.

Our key underpinning is the 4-Quadrant Framework EIRS that offers detailed visualization of four elements:

Customer Experience Maps

Insights and Tools based on data-driven research

Actionable Results to meet all the business priorities

Strategic Frameworks to boost the growth journey

The study strives to evaluate the current and future growth prospects, untapped avenues, factors shaping their revenue potential, and demand and consumption patterns in the global market by breaking it into region-wise assessment.

The following regional segments are covered comprehensively:

North America

Asia Pacific

Europe

Latin America

The Middle East and Africa

The EIRS quadrant framework in the report sums up our wide spectrum of data-driven research and advisory for CXOs to help them make better decisions for their businesses and stay as leaders.

Below is a snapshot of these quadrants.

1. Customer Experience Map

The study offers an in-depth assessment of various customers’ journeys pertinent to the market and its segments. It offers various customer impressions about the products and service use. The analysis takes a closer look at their pain points and fears across various customer touchpoints. The consultation and business intelligence solutions will help interested stakeholders, including CXOs, define customer experience maps tailored to their needs. This will help them aim at boosting customer engagement with their brands.

2. Insights and Tools

The various insights in the study are based on elaborate cycles of primary and secondary research the analysts engage with during the course of research. The analysts and expert advisors at TMR adopt industry-wide, quantitative customer insights tools and market projection methodologies to arrive at results, which makes them reliable. The study not just offers estimations and projections, but also an uncluttered evaluation of these figures on the market dynamics. These insights merge data-driven research framework with qualitative consultations for business owners, CXOs, policy makers, and investors. The insights will also help their customers overcome their fears.

3. Actionable Results

The findings presented in this study by TMR are an indispensable guide for meeting all business priorities, including mission-critical ones. The results when implemented have shown tangible benefits to business stakeholders and industry entities to boost their performance. The results are tailored to fit the individual strategic framework. The study also illustrates some of the recent case studies on solving various problems by companies they faced in their consolidation journey.

4. Strategic Frameworks

The study equips businesses and anyone interested in the market to frame broad strategic frameworks. This has become more important than ever, given the current uncertainty due to COVID-19. The study deliberates on consultations to overcome various such past disruptions and foresees new ones to boost the preparedness. The frameworks help businesses plan their strategic alignments for recovery from such disruptive trends. Further, analysts at TMR helps you break down the complex scenario and bring resiliency in uncertain times.

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The report sheds light on various aspects and answers pertinent questions on the market. Some of the important ones are:

1. What can be the best investment choices for venturing into new product and service lines?

2. What value propositions should businesses aim at while making new research and development funding?

3. Which regulations will be most helpful for stakeholders to boost their supply chain network?

4. Which regions might see the demand maturing in certain segments in near future?

5. What are the some of the best cost optimization strategies with vendors that some well-entrenched players have gained success with?

6. Which are the key perspectives that the C-suite are leveraging to move businesses to new growth trajectory?

7. Which government regulations might challenge the status of key regional markets?

8. How will the emerging political and economic scenario affect opportunities in key growth areas?

9. What are some of the value-grab opportunities in various segments?

10. What will be the barrier to entry for new players in the market?