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Non-return valve

Product information "Non-return valve"

Suitable for: Side channel blowers in pressure operation

Function: Non-return valves prevent backflow into the unit when the side channel blower is at a standstill. Especially when the blower is working against a water column, the use of such a non-return valve is mandatory to prevent ingress of moisture.
The non-return valves offered are made of brass and have either an EPDM, PTFE or Viton (on request) seal. In addition, they are equipped with a special spring to reduce the opening pressure. When used with side channel blowers, this results in lower pressure drops and thus energy savings. They can only be operated faultlessly in a horizontal installation position.

technical data:
Material: Housing: brass
Spring: stainless steel
Seal: EPDM, PTFE or Viton(*)
Temperature range: EPDM: -20°C up to max. +90°C
PTFE: -20°C up to max. +180°C
Pressure range: max. 16 bar
Action pressure: Special spring: Type G 1¼" - G 2½" : 30 - 45 mbar
Standard spring(*): 150 mbar
Options: - EPDM = EPDM seal
- PTFE = PTFE seal
- V = Viton seal(*)
* on request