ZDB10VP1-4X/100V

The ZDB10VP1-4X/100V pressure relief valve belongs to the ZDB Pressure Relief Valves series manufactured by Bosch Rexroth for maintaining controlled pressure levels in hydraulic automation circuits. It is a pilot-operated pressure relief unit, so the main flow is opened by a small pilot stage to achieve stable pressure regulation. The relief function is configured between port P and port T, letting excess fluid flow directly back to tank when the threshold is reached. A rotary knob permits easy external adjustment, allowing technicians to fine-tune the set point without disassembly. The valve is factory rated for a maximum set pressure of 100 bar, which defines the upper limit before the passage opens. Its sandwich plate connection enables stacking between subplates and directional valves, streamlining installation in compact manifolds.

For internal construction the design carries a single cartridge, reducing component count and simplifying maintenance. The cartridge arrangement also allows quick replacement when contamination requires service. FKM seals are fitted, providing compatibility with higher temperature oils and many synthetic fluids; the material resists swelling in mineral oils to preserve dimensional stability. The body is supplied without additional corrosion protection, so it should be mounted inside protected housings when fluids or environments are aggressive. No locating hole is provided, which leaves alignment to the mounting bolts of the stack. This arrangement keeps pressure losses low while still delivering dependable over-pressure safeguarding for pumps and actuators in automated hydraulic equipment.