DBW30B1-5X/350-6EG110N9K4

The DBW30B1-5X/350-6EG110N9K4 valve belongs to the DB Pressure Relief Valves series from Bosch Rexroth and limits hydraulic pressure in automation loops. It is built as a seat valve so internal sealing surfaces close tightly and limit leakage when the set pressure is reached. Solenoid actuation permits electrical on-off command of the pilot stage, while a nominal voltage of 110 VDC matches common control supplies. A 3-pole (2+PE) connector conforming to EN 175301-803 provides the coil wiring interface and maintains protective grounding. Should electrical power be unavailable, a concealed manual override lets service personnel shift the valve without removing covers. System pressure is set with a rotary knob, giving field technicians simple mechanical adjustment. Porting follows spool symbol B, defining the internal flow route, and the subplate mounting style allows the unit to be installed on standardized manifolds that share an ISO 6264-10-17 connection layout.

With a nominal size of 32, the valve provides large flow paths suited to high-capacity circuits. It passes up to 650 l/min, enabling relief of pumps that deliver substantial volume without creating excessive pressure drop. The generous passage area associated with this size keeps fluid velocity moderate and limits noise during dumping events. The maximum operating pressure rating of 350 bar allows the assembly to safeguard heavy-duty hydraulic systems that work near this limit. When pressure is diverted to tank, port T can withstand up to 210 bar, so back-pressure in the return line does not compromise function. Together, the flow capacity, pressure limits, and size code help the component maintain stable relief behavior under rapid load changes and keep downstream actuators protected in continuous service.