Bosch Rexroth Z-2-S-16-3-51 Pilot Operated Check Valve

The Bosch Rexroth Z-2-S-16-3-51 is a pilot-operated check valve in the sandwich-plate Z2S family, identified by Rexroth part number R900412346. It provides backflow control in hydraulic circuits by using a pilot signal to open and hold flow in one direction while preventing reverse flow, enabling actuator holding and controlled unloading. The valve follows the Z2S sandwich-plate design with porting patterns aligned to ISO 4401-3 standards, allowing mounting in compatible manifolds. The size-16 configuration (Z-2-S-16-3-51) denotes a specific valve assembly within the range, offering a compact option for applications requiring precise pilot-assisted check functionality.