Direct Acting, Poppet Type, Metric Cartridge – DB3E


The pressure relief valve DB3E is a direct-acting, spring-loaded poppet valve. Its function is to relieve pressure in the system.

The spring exerts a force on the poppet and presses it on the valve seat. On the opposite side, the system pressure exerts force on port 1 of the valve. If the hydraulic pressure is below the pre-set spring tension, the valve is closed. Only if the hydraulic force exceeds the pre-set spring tension does the valve open and flow is diverted to tank via port 2.

See data-sheet for drawings, dimensions, model code, etc…


  • Low hysteresis and accurate pressure control
  • External surfaces zinc-plated and corrosion-proof
  • Hardened and ground internal valve components to ensure minimal wear and extended service life
  • Adjustable throughout flow range
  • Various pressure ranges up to 350 bar
  • Guided poppet
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HYDAC Australia

HYDAC New Zealand

AUSTRALIA 1300 449 322

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