Reliable prevention of medium back flow by automatic mechanical closing of the Non-return valve.
The disc opens automatically, if the medium flows in the direction indicated by the arrow on the valve body.
No. 9831 Design features:
reduced weight
simple cleaning
fully corrosion free
optimised velocity
simple maintenance
PN 25 (on request)
opening pressure min. 0,03 bar
closing pressure min. 0,5 bar (tight)
No. 9830 Design features
with lever and counterweight (on request)
opening pressure min. 0,03 bar
closing pressure min. 0,1 bar (tight) without handwheel and extension spindle
(only suitable for manual actuation)
(only suitable for manual actuation)
