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Pilot Operated, Spool Type, Metric Cartridge – PDBM10120AP

Relief valve PDBM10120AP

The PDBM10120AP is a pilot-operated, spool-type proportional pressure relief valve.

If the pressure at port 1 exceeds the setting defined by the electrical signal, the pilot-stage opens and oil flows from behind the main spool to the tank port 2. The resulting pressure differential causes the main spool to move against the reset-spring and allows oil to flow from port 1 to port 2. Therefore, as a function of the electrical signal, it’s possible to change the relief pressure at port 1 steplessly.


  • Hardened and ground control spool to ensure minimal wear and extended service life
  • Quick response
  • Low hysteresis and excellent stability throughout the flow range
  • Increased operating reliability due to protective strainer
  • Also, low pressure drop due to CFD optimized flow path
  • External surfaces zinc-plated and corrosion-proof
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HYDAC Australia

HYDAC New Zealand

AUSTRALIA 1300 449 322

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