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.
ERV 8-PH:
The proportional, pilot operated check valves are pilot controlled, high performance screw-in cartridges with an M30x1.5 mounting thread size 8. For the lifting function (A → B) only the pretension force of the check valve has to be overcome. The conical seat design ensures that the cartridges are leak-free from B → A. The check function can be overridden by applying a suitable pilot pressure at port X. In the B → A direction, flow can pass freely through the valve (opening pressure corresponds to the pilot pressure X pilot ratio). The lowering function can thus be controlled proportionally. These screw-in cartridges are predominantly used in certain mobile and stationary applications. This product is intended for use on outrigger cylinders. All exposed parts of the cartridge are zinc-nickel coated according to DIN 50 979, allowing them to be used even under extreme external conditions.
