The fitted check valves are cone seat valves. Sealing is effected by pressing together of two metal cones. They were specially developed for water hydraulics. The check valves have a free passage from A to B and seal off in the opposite direction without any leakage. The opening pressure is 1 bar. Working pressure should not exceed 320 bar. However, the check valves are also available for other opening pressures as well as without closing spring. Please state opening pressure required when ordering.
The valve cone as well as the closing spring are fitted in an extremely flow-promoting fitted cartridge. A double guide for the valve cone provides for a perfect seal on the valve seat. The closing spring is chambered such that medium cannot flow through the same. Thus, in the event of any spring fracture occurring it is impossible for debris to enter into the circuit. Check valves of this type are almost insensitive with regard to the high flow speeds occurring in hydraulic press water systems. All wear parts are made of corrosion resistant materials, are easy to access and fast to replace. The mounting position can be freely chosen.
fig.: Mounting example * fitted check valve NW 10 to 100