Backventiler (Non Return Valve GA 015, GB 015)
NON RETURN VALVE GA 015, GB 015, GB 019 – Little dimensions and low weights. Face to face acc.to DIN EN 558-1 Series 49 (DIN 3202 K4). Opening pressure from 20 to 500 mBar. Usable also as vacuum breacker, overpressure and bottom valve. No leackage with soft seat and acc.to DIN 3230 BN3 with metal seat. Low head losses.
Backventiler Norval (Non Return Check Valve)
CHECK VALVE FEATURES THAT THE PIPING ENGINEER IS LOOKING FOR.
* Tight shut off under minimum back pressure.
* Quick response to no-flow or reverse flow conditions. Low resistance to forward flow.
* Lightweight construction.
* Ease of installation with unskilled operators.
* No maintenance. It is a stop silent valve.
* It stops the reverse flow and is completely silent in its operation, preventing water hammer.