How Efficient is the Proportional Pinch Valve?

The pneumatic pinch valve is a two-way valve specially designed to shut off or control the corrosive and abrasive media. The needle proportional pinch valve uses the pressurized air for opening & closing the valve. The proportional electric valve has no restriction if the valve is in the open position and allows the fluids to pass from the bore of the regulator. The flexible internal sleeve of the ruber is utilized in the pneumatic valve, which isolates that media. 

What is Pinch Valve Pneumatic:

The relatively inexpensive pinch valve is known to be the simplest type for domestic or industrial applications. This pinch valve is known to be the industrial version of the pinch cock used in the laboratory for controlling the fluids with the help of rubber tubing. The proportional pinch valve is ideal for the opening-closing and throttling services. Usually, the effective throttling range is between 10 to 95 percent of the rated flow capacity. 

What is the Working Principle of a Pinch Valve Regulators?

The pinch valve works in a way by squeezing or pinching the flexible plastic tube via the shaft, which the principal of solenoid electromagnetic principal can control. The proportional valve controller is used in applications that don’t allow the proportional pinch valve to be in contact with the fluid in the tube-like food, corrosive fluid, chemical reagents, etc. The commonly used pinch valve offers complete open and closing features. But the disadvantage of the valve is that the rate of flow gets dropped when the tube is inserted into the pinch valve. And also, there isn’t any way to control the fluid flow rate. 

Application Requirements:

At the time of selecting the proportional pinch valve, which type of variable type is required to be controlled. The proportional valve solenoid helps you control the pressure of the liquids or gases. But it can also help the other relevant process, such as temperature, position, rotation speed, flow, force, etc. You need to know which variables need to be controlled for purchasing the pinch valve for your type of application. The selection criteria for the pinch valves are as follows:

  • Required a suitable range of flow.
  • Media and ambient temperature.
  • Inlet pressure with the maximum control for the output pressure.
  • Action is required at the time of power loss.
  • Power utilization, especially for mobile applications.
  • Media types that might influence the required valve materials and construction.
  • Other environmental factors like vibration, hazardous location, and space restrictions.

The most critical question is about adjusting the proportional valve is how to adjust the pressure controlling valve depending on the static or dynamic application.

Pinch Valve Components:

The pneumatic pinch valve manufacturers have three main components, and these components work together to perform all the functions of the proportional pinching valve. 


The casing of the regulator is the complete structure of the hydraulic proportional pinch valve. And the rubber casing is placed in this section. This casing offers the proportioning valve compression, structure, and shape. 

Rubber Washer:

The rubber sleeves are mounted to the housing on the pinch proportional flow controlling valve that allows the material to flow in & out. This is only the material that comes in contact with the medium that comes out of the valve.

End of Connection:

An end connection is usually loaded, tapped, or bolted for accommodating and connecting the proportional pinch valve.

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