Air operated Pinch Valves with Flange Connection - RVA Series

The air operated pinch valves of the RVA series are available in the nominal diameters of DN025 to DN400.

They are designed with a flange connection complying with DIN EN 1092 (PN10/16) as standard. On request, the air operated pinch valves of the RVA series can be made with a flange connection complying with ANSI B 16.5- 150lbs, if required.

The RVA series air operated pinch valves consist of the essential part of every pinch valve, the sleeve, and a two-part (half shell) body. The pinch valve sleeve is positioned in the centre of the RVA series air operated pinch valves' body because of both of its flange ends and the geometry of the sleeve. Both of the body halves are sealed pressure tight against each other using a PTFE packing cord.

The RVA series air operated pinch valve is closed by differential pressure of 2-3 bar being fed via the medium/operating pressure (depending on the elastomer grade) into the pinch valve body. As soon as the pressure supply is interrupted and the pinch valve body bled, the pinch valve sleeve opens again completely because of its enormous rebound resilience.

Only the sleeve is in the product flow (contact with the operating medium) of the RV series air operated pinch valve.

A selection of 10 different elastomer grades for the sleeve (natural rubber, food quality rubber, neoprene, EPDM, EPDM food quality, viton, nitrile, nitrile food quality, Hypalon, and butyl) ensures that the RVA series air operated pinch valves have a very wide and practically unrestricted field of application.

The RVA series air operated pinch valve's body is available in either grey cast iron or aluminium. The DN400 nominal diameter is available in steel.