Backflow prevention valve

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Art.Nº: 1707

Application: for use in drinking water sector (other on request)

DN: 1 1/2" - 2" PN16

DN200 - DN300 PN10 

DN40 - DN300 PN16


The non-return valve works like a check valve. However, the opening and closing rates can be adjusted independent from each other via throttle valves (3A) and (3B). Any return flow is prevented if the inlet pressure (P1) is equal to or lower than the outlet pressure (P2). The hydraulic interlock guarantees absolute tightness.

Minimum inlet pressure: 1 bar

For rating, please specify the following:
- Flow (med., max.)
- Inlet pressure (P1 side)
- Admissible pressure drop (normal: 0.2-0.5 bar)

 Technical datasheet

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