Your Leading Electric Actuator Manufacturer and Supplier in China!
We not only have a young & passionate sales team available 24/7 to serve you, but also a well experienced technical team to help you solve any technical challenges in Valve Automation Solutions.
We have high-precision CNC machining Center and 6 product line for ensuring the stability and reliability of product quality.
Our workshop is an efficient and well-organized workspace, equipped with modern equipment and skilled technicians. Regular equipment maintenance and upkeep are conducted to ensure seamless production processes.
We ensure excellent product quality through rigorous quality control, high-quality materials and manufacturing processes, as well as a focus on customer requirements.
-
![Pneumatic Stainless Steel Pinch Valve]()
Pneumatic Stainless Steel Pinch Valve
Add to Inquiry -
![Pneumatic Heavy Duty Pinch Valve]()
Pneumatic Heavy Duty Pinch Valve
Add to Inquiry -
![Electric Heavy Duty Pinch Valve]()
Electric Heavy Duty Pinch Valve
Add to Inquiry -
![Mnual Heavy Duty Pinch Valve]()
Add to Inquiry -
![Heavy Duty Pneumatic Pinch Valve]()
Heavy Duty Pneumatic Pinch Valve
Add to Inquiry -
![Pneumatic Flange Pinch Valve]()
Add to Inquiry -
![AMP Pneumatic Pinch Valve]()
Add to Inquiry -
![AMC Pneumatic Pinch Valve]()
Add to Inquiry -
![Pneumatic Pinch Valve]()
Add to Inquiry -
![AF Pneumatic Pinch Valve]()
Add to Inquiry
What is a Pinch Valve?
A pinch valve is a control valve that uses a pinching effect to open or close the flow of a fluid or gas. The valve pinches a flexible tube shut between a fixed and a moving bar. The valve is isolated from the pumped media.
How Does a Pinch Valve Work?
The rubber sleeve inside the body of the valve is the part that closes it. When in the open position, the Pinch Valve has a full and true bore. To close the valve, air pressure is supplied into an air nipple on the outer body, which then travels through into the internal part of the valve, pushing down onto the rubber sleeve which fully collapses and closes tightly. With Pinch Valves, the sleeve folds closed in the same way every time, to ensure a longer working life.
As well as air operated Pinch Valves, mechanical versions are also available. There are two options for controlling the mechanical pinch valves: either with a hand wheel or pneumatically. The manual version simply works by turning a hand wheel to open/close the valve, whereas a pneumatically operated mechanical pinch valve works by compressor bars pulling the sleeve open or pushing together to keep the sleeve closed. This type of valve works on a spring return mechanism and the valve is kept in the normally closed position unless air is supplied to pull the bars apart to open it.
What are the Parts of a Pinch Valve?
The Body
This is the main structure of the valve that holds the other parts.
End Connections
These are the inlet and outlet connections used to connect the valve to a pipeline.
The Rubber Sleeve
Also known by various names like: hose, collar, rubber diaphragm, bladder, tube, or diaphragm. This component is critical for controlling fluid flow. It pinches closed to stop flow and opens to allow it, creating a seal when needed.
The Applications of Pinch Valve
Food and Beverage Industries
Sanitary pinch valves have rubber sleeves made of nitrile, natural rubber, and EPDM, all of which are FDA-approved for contacting food. Also, a pinch valve cycles rapidly, which significantly increases packaging efficiency.
Pharmaceutical Industry
Similar to the food industry, the pharmaceutical industry demands cleanliness, making sanitary pinch valves a good choice.
Chemical Industry
The chemical industry has a broad range of applications. Pinch valves can accommodate many of these applications because of the variety of materials available for pinch valve sleeve production.
Cement Industry
Natural rubber pinch valve sleeves are durable enough to withstand cement's abrasion.
Bulk and Solid Handling Industry
Pinch valves offer the abrasion resistance necessary to handle bulks and solids. The valves' full-bore opening prevents solids from clogging the valve.
Ceramic Industry
Pinch valves with reinforced rubber sleeves can handle the extreme abrasiveness of a ceramic flow.
Plastics Industry
Pinch valves are suitable for moving plastic pellets and nibs, which may clog up other types of valves.
Wastewater Industry
Pinch valves operate as pressure relief and shut-off valves in the wastewater industry.
The Common Types of Pinch Valve
Normally Open (NO)
A Normally Open Valve permits flow in the de-energised condition (without Power). When power is applied, a solenoid actuator closes the pinch elements to squeeze the tube closed and shut off flow.
Normally Closed (NC)
A Normally Closed Valve incorporates a spring which closes the pinch elements to shut off flow in the de-energized condition. When power is applied, a solenoid actuator opens the pinch elements to allow flow through the tubing.
Changeover (CO)
A changeover valve incorporates two channels, one of which is open, and the other closed in the de energized condition. The individual channels of a changeover valve may be described as NO or NC type.
The Common Parameters of Pinch Valves
Pinch Valve Body Material
Lightweight body material is preferred. The elastomeric sleeve should be carefully selected as it comes in direct contact with the flowing fluid. Usual rubber materials are EPDM, NBR, natural rubber, silicone, food quality rubber, GRS, Neoprene, Butyl, Buna-N, PTFE, FDA, Hypalon, etc. Good abrasion resistance to prevent damage is required.
Opening and Closing Pressure
For proper functioning of the pinch valve, the following pressure differentials must be considered:
Opening
The operating pressure should be more than the control pressure. The typical control pressure while the opening is 0 bar. Enough pressure differential is required so that the operating pressure is able to open the sleeve.
Closing
During the closing of the pinch valve, the control pressure has to be more than the operating pressure. In absence of enough pressure differential, the control pressure may not be able to overcome the operating pressure and close the valve by pushing the sleeve.
Design Temperature
The valve material should be able to withstand the minimum and maximum temperatures that are expected for the application.
Our Certificate
Our Factory
Ultimate Guide for Pinch Valve
Q: What is the difference between a pinch valve and a ball valve?
Q: What is the difference between a pinch valve and a globe valve?
Q: What are advantages of pinch valve?
Lightweight.
No clogging or dead spots.
Compact, simple, robust & straight through design.
Very fast opening/closing times.
Less air consumption.
Self-cleaning.
Permanent seal with tight shutoff.
Q: Why use a pinch valve?
Q: How does an electrically actuated pinch valve work?
Q: How does a manual pinch valve work?
Q: What are pinch valves used for?
Q: What is the life expectancy of a pinch valve?
Q: What is the alternative to a pinch valve?
Q: What is the difference between a pinch valve and a solenoid valve?
Q: What is the difference between a plug valve and a pinch valve?
Q: What are the components of a pinch valve?
Q: What is the operating pressure of a pinch valve?
Q: What is the size range of a pinch valve?
Q: What is the construction and working of a pinch valve in detail?
Q: Which of the following applications would you not use a pinch valve for?
Q: Can a pinch valve regulate flow?
Q: What is a single use pinch valve?
Q: Are pinch valves reliable?
Q: What are the features of a pinch valve?
We're known as one of the most professional pinch valve manufacturers and suppliers in China, providing high quality products with competitive price. Please be free to buy durable pinch valve in stock here from our factory. For pricelist and quotation, contact us.
VF Pneumatic Pinch Valve, VMC Pneumatic Pinch Valve, Pneumatic Pinch Valve