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Cartridges
Pressure Control
Reducing/Relieving

Model

PRJBLAN

Control
  • Standard Options
  • C
    Tamper Resistant - Factory Set
  • L
    Standard Screw Adjustment
  • Additional Options
  • K
    Handknob
Adjustment Range
  • Standard Options
  • A
    750 - 3000 psi (50 - 210 bar), 1000 psi (70 bar) Standard Setting
  • B
    300 - 1500 psi (20 - 105 bar), 500 psi (35 bar) Standard Setting
  • W
    1100 - 4500 psi (76 - 315 bar), 1100 psi (76 bar) Standard Setting
  • Additional Options
  • D
    200 - 800 psi (14 - 55 bar), 400 psi (28 bar) Standard Setting
  • E
    100 - 400 psi (7 - 28 bar), 200 psi (14 bar) Standard Setting
  • S
    50 - 200 psi (3,5 - 14 bar), 100 psi (7 bar) Standard Setting
Seal Material
  • Standard Options
  • E
    EPDM
  • N
    Buna-N
  • V
    Viton
Material/Coating
  • Standard Options
  • Standard Material/Coating
  • /AP
    Stainless Steel, Passivated

Model: PRJB

Direct-acting, pressure reducing/relieving valve

Cavity: T-19A | Capacity:

Model

PRJBLAN

Control
  • Standard Options
  • C
    Tamper Resistant - Factory Set
  • L
    Standard Screw Adjustment
  • Additional Options
  • K
    Handknob
Adjustment Range
  • Standard Options
  • A
    750 - 3000 psi (50 - 210 bar), 1000 psi (70 bar) Standard Setting
  • B
    300 - 1500 psi (20 - 105 bar), 500 psi (35 bar) Standard Setting
  • W
    1100 - 4500 psi (76 - 315 bar), 1100 psi (76 bar) Standard Setting
  • Additional Options
  • D
    200 - 800 psi (14 - 55 bar), 400 psi (28 bar) Standard Setting
  • E
    100 - 400 psi (7 - 28 bar), 200 psi (14 bar) Standard Setting
  • S
    50 - 200 psi (3,5 - 14 bar), 100 psi (7 bar) Standard Setting
Seal Material
  • Standard Options
  • E
    EPDM
  • N
    Buna-N
  • V
    Viton
Material/Coating
  • Standard Options
  • Standard Material/Coating
  • /AP
    Stainless Steel, Passivated

Technical specifications

Direct-acting, 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 incorporate a damped construction for stable operation allowing the use of high reduced pressure.

  • Pressure at port 3 is directly additive to the valve setting at a 1:1 ratio and should not exceed 3000 psi (210 bar).
  • Leakage specified in Technical Data is out of port 3 with a supply pressure of 2000 psi (140 bar) and the valve set at mid range. This leakage is directly proportional to pressure differential and inversely proportional to viscosity expressed in centistokes.
  • 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.
  • All spring ranges are tested for correct operation with 5000 psi (350 bar) inlet pressure.
  • Suitable for accumulator circuits since the absence of pilot control flow results in reduced secondary circuit leakage.
  • Direct acting concept provides highly reliable operation in contaminated systems, especially at dead headed conditions.
  • Unlike pilot operated versions, direct acting valves exhibit a transitional step between reducing and relieving modes. This step equals 5% of the high end of the adjustment range, independent of the valve setting. Therefore, these valves may not be suitable for counterbalancing applications.
  • Direct operated version offers superior dynamic response compared to equivalent pilot operated models.
  • 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-19A
  • Series
    4
  • Capacity
    80 gpm
  • Maximum Operating Pressure
    5000 psi
  • Factory Pressure Settings Established at
    0.25 gpm
  • Maximum Valve Leakage at 110 SUS (24 cSt)
    5 in³/min.
  • Adjustment - No. of CW Turns from Min. to Max. setting
    5
  • Valve Hex Size
    1 5/8 in.
  • Valve Installation Torque
    350 - 375 lbf ft
  • Adjustment Screw Internal Hex Size
    5/32 in.
  • Locknut Hex Size
    9/16 in.
  • Locknut Torque
    80 - 90 lbf in.
  • Model Weight
    3.10 lb
  • Seal kit - Cartridge
    Buna: 990-019-007
  • Seal kit - Cartridge
    Polyurethane: 990-019-002
  • Seal kit - Cartridge
    Viton: 990-019-006

Model CAD Files

Files not yet avialable. Click below to request them.

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