Check Valves DERV
Description
Series DERV pilot-operated check valves lock a cylinder in any rest position.
They are intended for direct mounting in the cylinder.
Check Valves ERV
Description
ERV 8, ERV 8-600:
These pilot-operated check valves are size 8, two stage, high performance screw-in cartridges with an (ERV 8: M30x1.5 / ERV 8-600: M34x1.5) mounting thread. The conical-seat design ensures that the cartridges are leak-tight from B → A. The check function can be overridden by applying a suitable pilot pressure at port X. In the A → B direction, flow can pass freely through the valve (opening pressure = 2.5 bar). These screw-in cartridges are predominantly used in certain mobile and industrial applications to maintain the position of loaded actuators (e.g. outrigger cylinders) after the pump pressure has been disconnected.
