Pinch Valves are suitable for dust, granular or pulpy medium as well as for liquid or gaseous media. The special construction of the sleeve effects the closing in a level to the middle (central) axis. The robust and compact design allows installation under the most difficult conditions and very tight space. The sleeve of high elasticity also closes absolutely tight with solid matter inclusion even at highest number of switching actuations.

Pinch Valves
PINCH VALVE OF PLASTIC DN 15 – 50
Specifications
- Max. allowable operating pressure: 6 bar
- Max. allowable control air pressure: 2 – 2,5 bar higher than the respective operating pressure.
- Valve Body construction material: POM (DIN 7728). Also available in food quality material.
- Sleeve material: Natural rubber - 80 ° C, Neoprene, NBR - 100 ° C, EPDM - 120 ° C
Air supply connection: 3/8” – internal thread according to DIN 2999.
PINCH VALVE OF ALUMINUM DN 50 – 200
Specifications
- Max. allowable operating pressure: 3,5 bar
- Max. allowable control air pressure: 2 – 2,5 bar higher than the respective operating pressure.
- Valve Body construction material: Cast Aluminum
- Sleeve material: Natural rubber - 80 ° C, Anticorrosion rubber - 80 ° C
Aluminum pinch valves 4" is widely used in cement silos to avoid instances of overloading the silo or misfeeding it with another grade of cement. It is placed immediately after the silo’s connection flange of the filling pipe and seals the cement passage to the silo.




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Protem Group S.A.
3, 35th Str., 133 41 Industrial Park
Ano Liossia / Athens, Greece
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GCR No: 7633901000