What is the Purpose of a Pneumatic Pinch Valve?

The pneumatic pinch valve is the two-way valve specifically designe for close or managing the flow of abrasive or granular media. This proportional control valve uses high-pressure air. And this is because it opens & closes the valve. At the opening position the pinch valve has no restrictions & allows a wide range of media to pass via the bore. The internal flexible rubber sleeve of the valve keeps the media isolated from the risk of contamination. In this article, you will read about the purpose of using the pneumatic valve

How Does a Pneumatically Operated Valve Work:

The pneumatic pinch valve consists of three major components on which the pinch valve works. It includes an internal rubber sleeve, a housing, and its end connection. The internal rubber sleeve of the proportional valve is placed into the housing from the inlet to its outlet. And this component is the only one that comes in contact with the media. The end connections of the valve are bolted and screwed at all ends to provide the support and connection of the valve. The pneumatic hand valve will open in a normal position. When high-pressure air is applied to force the valve, this is why the rubber sleeve is pushed down and creates the pinching effect. The flow is obstructed when the rubber sleeve is completely pinched and the valve is closed. 

Unlike the conventional pneumatic pinch valves such as gate and ball valves, the particles get trapped around the valve gates. Then the rubber sleeve of the proportional valve controller is capable enough to trap the particles applied to the rubber sleeve and the force to follow the media. And this makes the valve to open. The completely opened pneumatic pinch valve offers the free flow of fluids to pass through the media to prevent the valve from blockage. The media also comes in contact with the regulator sleeve. Allowing the media to be isolate and no contamination and damage to any other component. 

Advantages of Air Operated Pinch Valve:

The pinching valve has a unique design that offers the below-listed pros so read on:

  • Great to use with abrasive & corrosive media
  • Keeps media free from contamination
  • Quick opening and closing time
  • Easy replacement of the rubber sleeves & they are also cost effective when it comes to maintenance.
  • Straight flow path & no clogging by the media
  • Minimum turbulence & friction
  • Excellent sealing properties
  • Low energy consumption


Disadvantages of Pneumatic Pinch Valve:

Below are a few of the disadvantages of using the pinch valves:

  • Due to the elastic property of the. The pinch valve is not compatible with high-temperature applications.
  • The high-pressure differential can cause the rubber sleeve to collapse or deform, causing the valve not to open fully.
  • The valve is unsuitable for applications of vacuum as suction inside the valve may lead the sleeve to collapse.


In this article, we discussed the basic purpose or reason of using the pneumatic pinch valve. By reading this post, you can understand how the pressure regulator works.

Related Posts

Leave a Reply

Your email address will not be published. Required fields are marked *