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Pressure relief valves, sandwich module, pilot operated


Pilot sandwich type pressure controls

Pressure relief valve types ZDB and Z2DB are pilot sandwich type pressure controls. ZDB versions offer single port pressure control, while Z2DB models offer dual port pressure control. Z2DB models can be configured as either port relief or cross port relief. The ZDB program offers multiple spring options.


  • Sizes 6 and 10
  • For mounting:
    – Size 6: Porting pattern according to ISO 4401-3, NFPA T3.5.1M R1,
    and ANSI B93.7 D 03
    – Size 10: Porting pattern according to ISO 4401-5, NFPA T3.5.1M R1,
    and ANSI B93.7 D05
  • Four pressure ratings: 50 bar (725 PSI), 100 bar (1450 PSI),
    200 bar (2900 PSI), and 315 bar (4600 PSI)
  • Five pressure relief functions:
    – A → T; P → T; B → T; A → T as well as
    – A+B → T; A → B and B → A
  • Adjustment type:
    – Rotary knob with scale

GoTo product focused delivery times are available only for the quantities and if applicable, the preferred options listed for the product. Order spikes can cause temporary extended lead times. If your need is critical please contact the factory for confirmed delivery times.