Fail Safe Mechanical Pinch Valve

Normally Closed – Air to open – Spring Return


The best valve for silo safety systems – Also available in Food Quality


How it works:

The normally closed Pinch Valve operates in the opposite way to the standard Pinch Valve. Air pressure is used to open the valve and when the air is taken off the valve closes in the fail safe position. When open, the Normally Closed Pinch Valve allows full unobstructed flow.


Single Cylinder 15mm to 50mm
Double Cylinder 65mm – 250mm


Pinch Valve Body


Flange Connections


Sleeve Materials

Natural Rubber (Standard), EPDM Food Quality, EPDM & Neoprene

Normally closed pinch valve with single acting cylinder and solenoid valve

Valve Function

Single Cylinder requires 3-4 BAR to open
Double Cylinder requires 5.5 – 6 BAR to open


OV Normally Closed Pinch Valve Operating Pressures

15mm – 32mm
Maximum Line Pressure – 5 Bars
40mm – 150mm 
Maximum Line Pressure – 3 Bars
Maximum Line Pressure – 2 Bars
Maximum Line Pressure – 2 Bars


Solenoid Valve, Pressure Regulators & Limit switches
Electro Pneumatic Positioner


Straight through clear bore
100% leak tight seal
True bore – No blockages
Easy and low cost maintenance
Quick/Efficient deliveries from largest UK Pinch Valve stock
Full technical back up

Industrial Areas

View examples of the different industries and types of media that this product can be used with.

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