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Check valve, pilot operated, type Z2S6...L6XThe check valve Z2S6 is a pilot operated check valve in sandwich plate design.It is used for the leakage-free closure of one or two actuator ports even during long standstill periods.Fluid flow freely in direction A1 to A2 or B1 to B2 and in the opposite direction the flow is blocked.If fluid flows from A1 to A2, the piston (1) is moved to the right and pushes the poppet (2) off its seat, then the pressure fluid may flow from B2 to B1.In order to make the reliable closure of the poppets (2) the ports must be connected to tank when the directional val