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Cartridges
Pressure Control
Reducing/Relieving

Model

PPHFLAN

Control
  • Standard Options
  • C
    Tamper Resistant - Factory Set
  • L
    Standard Screw Adjustment
  • Additional Options
  • K
    Handknob
  • Q
    Capped and Lockwired
Adjustment Range
  • Standard Options
  • A
    100 - 3000 psi (7 - 210 bar), 200 psi (14 bar) Standard Setting
  • B
    50 - 1500 psi (3,5 - 105 bar), 200 psi (14 bar) Standard Setting
  • C
    150 - 6000 psi (10,5 - 420 bar), 200 psi (14 bar) Standard Setting
  • D
    25 - 800 psi (1,7 - 55 bar), 200 psi (14 bar) Standard Setting
  • E
    25 - 400 psi (1,7 - 28 bar), 200 psi (14 bar) Standard Setting
  • N
    60 - 800 psi (4 - 55 bar), 200 psi (14 bar) Standard Setting
  • Q
    60 - 400 psi (4 - 28 bar), 200 psi (14 bar) Standard Setting
  • W
    150 - 4500 psi (10,5 - 315 bar), 200 psi (14 bar) Standard Setting
  • Additional Options
  • H
    30 - 3000 psi (2 - 210 bar), 200 psi (14 bar) Standard Setting
Seal Material
  • Standard Options
  • N
    Buna-N
  • V
    Viton

Model: PPHF

Pilot-operated, pressure reducing/relieving valve with drilled piston orifice

Cavity: T-17A | Capacity:

Model

PPHFLAN

Control
  • Standard Options
  • C
    Tamper Resistant - Factory Set
  • L
    Standard Screw Adjustment
  • Additional Options
  • K
    Handknob
  • Q
    Capped and Lockwired
Adjustment Range
  • Standard Options
  • A
    100 - 3000 psi (7 - 210 bar), 200 psi (14 bar) Standard Setting
  • B
    50 - 1500 psi (3,5 - 105 bar), 200 psi (14 bar) Standard Setting
  • C
    150 - 6000 psi (10,5 - 420 bar), 200 psi (14 bar) Standard Setting
  • D
    25 - 800 psi (1,7 - 55 bar), 200 psi (14 bar) Standard Setting
  • E
    25 - 400 psi (1,7 - 28 bar), 200 psi (14 bar) Standard Setting
  • N
    60 - 800 psi (4 - 55 bar), 200 psi (14 bar) Standard Setting
  • Q
    60 - 400 psi (4 - 28 bar), 200 psi (14 bar) Standard Setting
  • W
    150 - 4500 psi (10,5 - 315 bar), 200 psi (14 bar) Standard Setting
  • Additional Options
  • H
    30 - 3000 psi (2 - 210 bar), 200 psi (14 bar) Standard Setting
Seal Material
  • Standard Options
  • N
    Buna-N
  • V
    Viton

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).

  • These valves have the main stage orifice drilled into the piston rather than a staked-in orifice. This allows the valve to survive physically demanding applications.
  • Maximum pressure at port 3 should be limited to 3000 psi (210 bar).
  • Pressure at port 3 is directly additive to the valve setting at a 1:1 ratio and should not exceed 3000 psi (210 bar).
  • Pilot operated reducing, reducing/relieving valves by nature are not fast acting valves. For superior dynamic response, consider direct acting 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.
  • 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.
  • 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.
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  • Cavity
    T-17A
  • Series
    3
  • Capacity
    40 gpm
  • Maximum Operating Pressure
    5000 psi
  • Control Pilot Flow
    15 - 20 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
    1 1/4 in.
  • Valve Installation Torque
    150 - 160 lbf ft
  • Adjustment Screw Internal Hex Size
    5/32 in.
  • Locknut Hex Size
    9/16 in.
  • Locknut Torque
    80 - 90 lbf in.
  • Model Weight
    1.30 lb
  • Seal kit - Cartridge
    Buna: 990-017-007
  • Seal kit - Cartridge
    Polyurethane: 990-017-002
  • Seal kit - Cartridge
    Viton: 990-017-006

Model CAD Files

Files not yet avialable. Click below to request them.

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