Solenoid operated directional control cartridge valves can be fitted directly into the hydraulic power pack central manifold. 3/4"UNF cartridge valves are an industry standard 08 size. Normally closed and open types give two different functions. The Normally closed valve holds pressure within the P port and when energized this is released to the tank, thus lowering a tipper truck or tail lift. Normally open works in the opposite way, allowing oil to the tank until the coil is energized, this is useful to un-load the main pump or release a hydraulic brake.
Both valves are poppet style so have a free flow in one direction and operate as a check valve in the other condition. Various solenoid coils are available in either 18 or 30Watt, these should be selected with help of our technical officeNormally open valves are typically used to "unload" the pump flow to tank until it is required. Various solenoid coils are available in either 18 or 30Watt, these should be selected with help of our technical office.