Bosch Rexroth Z2S 10B1-36 R900407434 Check Valve

Bosch Rexroth Z2S10B1-3X R900407434 is a sandwich-plate, pilot-operated check valve that prevents backflow in hydraulic circuits while enabling controlled opening when a pilot pressure is applied. This Z2S family valve is designed for installation between mounting surfaces in valve blocks, serving as a check valve with an external pilot-control path to override the backflow when needed. The R900407434 designation identifies the Z2S10B1-3X model, a variant consistently cataloged by Bosch Rexroth and listed in standard stock lists as Z2S10B1-3X with R900407434. In Rexroth literature, Z2S valves are described as pilot-operated check valves (with versions A and B offering different pilot configurations; some variants use external control through port P). Typical applications include backflow prevention in hydraulic circuits and protection for pumps and actuators where holding a load in place or preventing reverse flow is necessary. For the SO14 version, documented dimensions note L1 about 13.5 mm and L2 about 38.5 mm, illustrating the compact sandwich-plate footprint of this family.