Non-return valves or check valves permit a volume flow only in one direction - the flow in the opposite direction is blocked.
The non-return valves supplied by our company reliably prevent any backflow of fluids in pipes with a maximum system pressure of up to 16 bar.
The valve housing consists of cast iron with nodular graphite (GGG-40). Oil, grease and fuel-proof balls made of acrylonitrile-butadiene-rubber (Perbunan) are used as sealing elements.
The material chosen for the ball seat depends on the anticipated system pressure. The ball seat can be supplied made of either plastic or brass.
Please refer to the table below for the technical parameters and dimensions of our non-return valves.