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Model

PPBBLAN

Control
Adjustment Range
Seal Material
Material/Coating

Pilot-operated, pressure reducing/relieving valve

Cavity: T-163A | Capacity:

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Model

PPBBLAN

Control
Adjustment Range
Seal Material
Material/Coating

Technical specifications

Pilot-operated, pressure reducing/relieving valves reduce a high primary pressure at the inlet (port 2) to a constant reduced pressure at port 1, with a full-flow relief function from port 1 to tank (port 3).

  • All three-port pressure reducing and reducing/relieving cartridges are physically interchangeable (i.e. same flow path, same cavity for a given frame size). When considering mounting configurations, it is sometimes recommended that a full capacity return line (port 3) be used with reducing/relieving cartridges.
  • Full reverse flow from reduced pressure (port 1) to inlet (port 2) may cause the main spool to close. If reverse free flow is required in the circuit, consider adding a separate check valve to the circuit.
  • If pilot flow consumption is critical, consider using direct acting reducing/relieving valves.
  • Recommended maximum inlet pressure is determined by the adjustment range. Ranges D, E, N, and Q are tested with a 2000 psi (140 bar) maximum differential between inlet and reduced pressure. Ranges A, B, and H are tested with a 3000 psi (210 bar) maximum differential between inlet and reduced pressure. Ranges C and W are tested with 5000 psi (350 bar) of inlet pressure.
  • Pilot operated valves exhibit exceptionally flat pressure/flow characteristics, are very stable and have low hysteresis.
  • Pressure at port 3 is directly additive to the valve setting at a 1:1 ratio and should not exceed 5000 psi (350 bar).
  • Pilot operated reducing, reducing/relieving valves by nature are not fast acting valves. For superior dynamic response, consider direct acting valves.
  • Cartridges configured with EPDM seals are for use in systems with phosphate ester fluids. Exposure to petroleum based fluids, greases and lubricants will damage the seals.
  • Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation torque and/or cavity/cartridge machining variations.
  • Cavity
  • Series
  • Capacity
    5 gpm
  • Maximum Operating Pressure
    5000 psi
  • Control Pilot Flow
    7 - 10 in³/min.
  • Factory Pressure Settings Established at
    blocked control port (dead headed)
  • Adjustment - No. of CW Turns from Min. to Max. setting
    5
  • Valve Hex Size
    3/4 in.
  • Valve Installation Torque
    20 - 25 lbf ft
  • Adjustment Screw Internal Hex Size
    5/32 in.
  • Locknut Hex Size
    1/2 in.
  • Locknut Torque
    80 - 90 lbf in.
  • Model Weight
    .30 lb
  • Seal kit - Cartridge
  • Seal kit - Cartridge
  • Seal kit - Cartridge
  • Seal kit - Cartridge

Model CAD Files

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Symbol CAD Files

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  • What do you mean by maximum differential?
  • Direct acting or pilot operated - what do I use?
  • Will your reducing/relieving valve relieve my pump to tank?
  • Can I back flow through a reducing valve from port 1 to port 2?
  • Maximum pressure differentials for spring ranges: A and B are 3000 psi (210 bar) N and Q are 2000 psi (140 bar) W is 5000 psi (350 bar)inlet pressure

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