Pinch Valves are the ideal solution for isolating and regulating abrasive, corrosive and fibrous products. The pneumatic pinch valve is being used more and more as an isolating valve or regulating valve for emulsions, sludges, dust, gaseous materials, compressed air, powder, granulates, pellets, etc. Air Actuated Pinch Valve offers a cost-effective solution to flow control problems. 

The actuation of the valve is accomplished by air or hydraulic pressure placed on the sleeve. The valve body acts as a built-in actuator, eliminating costly pneumatic, hydraulic or electric actuators. Adding air pressure within the annular space between the body and the sleeve can open, throttle or close the valve.

Air Operated Pinch Valve is characterized by a free flow of products because the nominal passage of practically all diameters is guaranteed. Advantages include minimum frictional resistance and non-clogging. Further advantages may be found in its lightweight and compact construction, which means pneumatic pinch valve is easy to install. Those are appreciated by our customers.

As the top 10 professional pneumatic pinch valve manufacturers and pneumatic pinch valve suppliers in China, JiaNai air operated pinch valve is advantageous because of their air and vacuum-tight seal, even with product flows containing solids. JiaNai pneumatic pinch valve is characterized in particular by an absolutely free flow of product, minimal air consumption as well as their extremely lightweight and compact design.

VA Air Operated Pinch Valve Products

When the control gas does not input into the pneumatic pinch valve, the cavity between the rubber sleeve and the valve body communicates with the atmosphere, and the rubber sleeve is in an outwardly tensioned state by the fluid pressure. Because there are reinforced plies arranged at a certain angle in the sleeve, the axial and radial pressures of the sleeve are balanced with each other, so the length and diameter of the sleeve will not change due to the fluid pressure. When the control gas enters the cavity between the sleeve and the valve body, the sleeve is deformed and intercepted under the control gas pressure.
When compressed air (pressure difference is 2 bar) enters the valve body of the pneumatic pinch valve, the specially-made inner liner with high resilience is compressed to produce a lip-type closure. This extremely increases the service life of the inner sleeve. In this case, the pneumatic pinch valve is closed, so that the medium flow can be shut down 100%. Its working pressure varies depending on the nominal diameter and ranges from 2-6 bar. When the compressed air is interrupted, the specially-made inner liner expands rapidly under the dual effects of its own rebound force and medium pressure, and then the valve is fully opened.

● Product flows naturally with low resistance
The pipe and valve have the same diameter, the structure is novel and simple. And the inner diameter of the rubber sleeve is the same as the pipe, and the local resistance is small. Therefore, the frictional resistance of the air operated pinch valve is extremely small, which will not affect the flow of medium in the pipeline, and it will not cause a blockage. In the nominal diameter range of various air operated pinch valves, the pipeline medium can be almost unobstructed.

● Good tightness and 100% leak-free
Air operated pinch valve series products have no sealing points, the control medium space is completely isolated from the valve channel, and no internal or external leakage will occur. The flat oval housing design ensures that the sleeve of the air operated pinch valve has a specified lip-folding pattern. This special lip-folding method ensures complete sealing of the product flow. Relying on the deformation of the rubber sleeve to achieve opening and closing, even if the fluid contains solid particles or fiber impurities will not block the closure. All things can be completely and quickly wrapped and closed, so the fluid tightly sealed.

● Wide range of application
Air operated pinch valves are the ideal solution for isolating and regulating abrasive, corrosive and fibrous products. It has a simple structure and a wide range of applications. The air operated pinch valve can be used in the pharmaceutical, food industry, chemical industry, pneumatic conveying system, pigment, and particulate matter processing, ceramics, and glass industry, plastic industry, suction device, batching system, filling and weighing device, exhaust, and ventilation system, etc. And it especially suitable for occasions with explosion-proof requirements.

● Long service life
The unique rubber sleeve with a reinforced cord can withstand high-frequency opening and closing operations. The air operated pinch valves are resistant to acids, alkalis and other chemicals, and have a long service life.

● Water treatment and sewage treatment industry: for a shut-off valve and/or control valve for limewash, suspensions, etc.
● Construction industry and plant engineering: for a shut-off valve for cement, concrete, sand, gravel, plaster, mortar, etc.
● Chemical industry: for dosing / isolating additives and fertilizers
● Plastics industry: for regulating, sealing and dosing granulates, powders, pellets, etc.
● Mining industry: for isolating and regulating during the extraction of minerals, ores, coal, etc.
● Air Drying Equipment
● Process Control Applications
● Laundry Equipment
● Textile Dyeing & Drying
● Bottling and Dispensing Equipment
● Ink and Paint Dispensing Equipment
● Industrial Compressors

Air Operated Pinch Valve VA Series

Suitable for food industry

Rust-proof stainless steel

Acid and alkali resistant