Pressure compensator SDWVPB-2-6

Series SDWVPB …-6 and SDWVPZ …-6 stack valves are applied in hydraulic circuits as bypass hydrostats with fixed spring settings options of 8 bar or 5 bar. They feature an integral pressure relief function. The pressure relief setting should be at least 10% higher than the maximum dynamic load which can occur at the actuator. The orifice which is essential to ensure oscillation-free operation is already in­corporated in the Z port of the cartridge. The integral shuttle valve signals the higher of the load pressures in A or B back to the hydrostat, which in turn maintains the pressure in P at a level which is higher still by the amount of the hydrostat spring setting. In conjunction with an orifice or proportional valve located in the down­stream P-to-A or P-to-B lines, the overall result produces the benefits of a 3-way flow control function with integral pressure relief (see the application example on page 3).