R901435204 Bosch Rexroth Pressure relief valve

Valve type Z3DR are pilot-operated 3-way pressure reducing valves in sandwich plate design with pressure limitation of the actuator. They serve for reduction and control of secondary pressure. The valves basically consist of pilot control valve (1) and housing (2) including main stage. The secondary pressure is set via the adjustment type (3). Rexroth pilot-operated pressure reducing valves feature flat discharge pressure curves, high stability and low hysteresis. Version "MS" enables measurement and monitoring of the set secondary pressure via a pressure load cell at the measuring port (4) (refer to Dimensions). If the secondary pressure at actuator port P① further exceeds the set value, the third line to tank port T is opened by the valve. This way, the actuator channel is protected against inadmissible pressure rise.