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Accumulator Sense, Pump Unload
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Model

XQGFLANBN

Control
  • Standard Options
  • C
    Tamper Resistant - Factory Set
  • K
    Handknob
  • L
    Standard Screw Adjustment
Adjustment Range
  • Additional Options
  • A
    1000 - 3000 psi (70 - 210 bar), 1000 psi (70 bar) Standard Setting
  • B
    500 - 1500 psi (35 - 105 bar), 500 psi (35 bar) Standard Setting
  • C
    2000 - 5000 psi (140 - 350 bar), 2000 psi (140 bar) Standard Setting
  • D
    250 - 800 psi (18 - 55 bar), 250 psi (18 bar) Standard Setting
Seal Material
  • Standard Options
  • N
    Buna-N
  • V
    Viton
Pilot Ratio (4th Letter) of Primary Cartridge
  • Standard Options
  • A
    15% (with QPAA primary cartridge, 15%, accumulator sense, pump unload valve - pilot capacity)
  • B
    20% (with QPAB primary cartridge, 20%, accumulator sense, pump unload valve - pilot capacity)
  • C
    30% (with QPAC primary cartridge, 30%, accumulator sense, pump unload valve - pilot capacity)
  • D
    50% (with QPAD primary cartridge, 50%, accumulator sense, pump unload valve - pilot capacity)
  • E
    10% (with QPAE primary cartridge, 10%, accumulator sense, pump unload valve - pilot capacity)
Port and Material Designation
  • Standard Options
  • E
    Ports P, T, & SYS 1 — 1" NPTF; Port SYS 2 — 3/4" NPTF; Port G — 1/4" NPTF; Ports D & AUX — 3/8" NPTF; Aluminum
  • E/S
    Ports P, T, & SYS 1 — 1" NPTF; Port SYS 2 — 3/4" NPTF; Port G — 1/4" NPTF; Ports D & AUX — 3/8" NPTF; Iron
  • F
    Ports P, T, & SYS 1 — 1 1/4" NPTF; Port SYS 2 — 1" NPTF; Port G — 1/4" NPTF; Ports D & AUX — 3/8" NPTF; Aluminum
  • F/S
    Ports P, T, & SYS 1 — 1 1/4" NPTF; Port SYS 2 — 1" NPTF; Port G — 1/4" NPTF; Ports D & AUX — 3/8" NPTF; Iron
  • M
    Ports P, T, & SYS 1 — SAE 16; Port SYS 2 — SAE 12; Port G — SAE 4; Ports D & AUX — SAE 6; Aluminum
  • M/S
    Ports P, T, & SYS 1 — SAE 16; Port SYS 2 — SAE 12; Port G — SAE 4; Ports D & AUX — SAE 6; Iron
  • N
    Ports P, T, & SYS 1 — SAE 20; Port SYS 2 — SAE 16; Port G — SAE 4; Ports D & AUX — SAE 6; Aluminum
  • N/S
    Ports P, T, & SYS 1 — SAE 20; Port SYS 2 — SAE 16; Port G — SAE 4; Ports D & AUX — SAE 6; Iron
  • X
    Ports P, T, & SYS 1 — 1" BSPP; Port SYS 2 — 3/4" BSPP; Port G — 1/4" BSPP; Ports D & AUX — 3/8" BSPP; Aluminum
  • X/S
    Ports P, T, & SYS 1 — 1" BSPP; Port SYS 2 — 3/4" BSPP; Port G — 1/4" BSPP; Ports D & AUX — 3/8" BSPP; Iron
  • Y
    Ports P, T, & SYS 1 — 1 1/4" BSPP; Port SYS 2 — 1" BSPP; Port G — 1/4" BSPP; Ports D & AUX — 3/8" BSPP; Aluminum
  • Y/S
    Ports P, T, & SYS 1 — 1 1/4" BSPP; Port SYS 2 — 1" BSPP; Port G — 1/4" BSPP; Ports D & AUX — 3/8" BSPP; Iron
Model: XQGF

Accumulator sense, pump unload assembly

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Model

XQGFLANBN

Control
  • Standard Options
  • C
    Tamper Resistant - Factory Set
  • K
    Handknob
  • L
    Standard Screw Adjustment
Adjustment Range
  • Additional Options
  • A
    1000 - 3000 psi (70 - 210 bar), 1000 psi (70 bar) Standard Setting
  • B
    500 - 1500 psi (35 - 105 bar), 500 psi (35 bar) Standard Setting
  • C
    2000 - 5000 psi (140 - 350 bar), 2000 psi (140 bar) Standard Setting
  • D
    250 - 800 psi (18 - 55 bar), 250 psi (18 bar) Standard Setting
Seal Material
  • Standard Options
  • N
    Buna-N
  • V
    Viton
Pilot Ratio (4th Letter) of Primary Cartridge
  • Standard Options
  • A
    15% (with QPAA primary cartridge, 15%, accumulator sense, pump unload valve - pilot capacity)
  • B
    20% (with QPAB primary cartridge, 20%, accumulator sense, pump unload valve - pilot capacity)
  • C
    30% (with QPAC primary cartridge, 30%, accumulator sense, pump unload valve - pilot capacity)
  • D
    50% (with QPAD primary cartridge, 50%, accumulator sense, pump unload valve - pilot capacity)
  • E
    10% (with QPAE primary cartridge, 10%, accumulator sense, pump unload valve - pilot capacity)
Port and Material Designation
  • Standard Options
  • E
    Ports P, T, & SYS 1 — 1" NPTF; Port SYS 2 — 3/4" NPTF; Port G — 1/4" NPTF; Ports D & AUX — 3/8" NPTF; Aluminum
  • E/S
    Ports P, T, & SYS 1 — 1" NPTF; Port SYS 2 — 3/4" NPTF; Port G — 1/4" NPTF; Ports D & AUX — 3/8" NPTF; Iron
  • F
    Ports P, T, & SYS 1 — 1 1/4" NPTF; Port SYS 2 — 1" NPTF; Port G — 1/4" NPTF; Ports D & AUX — 3/8" NPTF; Aluminum
  • F/S
    Ports P, T, & SYS 1 — 1 1/4" NPTF; Port SYS 2 — 1" NPTF; Port G — 1/4" NPTF; Ports D & AUX — 3/8" NPTF; Iron
  • M
    Ports P, T, & SYS 1 — SAE 16; Port SYS 2 — SAE 12; Port G — SAE 4; Ports D & AUX — SAE 6; Aluminum
  • M/S
    Ports P, T, & SYS 1 — SAE 16; Port SYS 2 — SAE 12; Port G — SAE 4; Ports D & AUX — SAE 6; Iron
  • N
    Ports P, T, & SYS 1 — SAE 20; Port SYS 2 — SAE 16; Port G — SAE 4; Ports D & AUX — SAE 6; Aluminum
  • N/S
    Ports P, T, & SYS 1 — SAE 20; Port SYS 2 — SAE 16; Port G — SAE 4; Ports D & AUX — SAE 6; Iron
  • X
    Ports P, T, & SYS 1 — 1" BSPP; Port SYS 2 — 3/4" BSPP; Port G — 1/4" BSPP; Ports D & AUX — 3/8" BSPP; Aluminum
  • X/S
    Ports P, T, & SYS 1 — 1" BSPP; Port SYS 2 — 3/4" BSPP; Port G — 1/4" BSPP; Ports D & AUX — 3/8" BSPP; Iron
  • Y
    Ports P, T, & SYS 1 — 1 1/4" BSPP; Port SYS 2 — 1" BSPP; Port G — 1/4" BSPP; Ports D & AUX — 3/8" BSPP; Aluminum
  • Y/S
    Ports P, T, & SYS 1 — 1 1/4" BSPP; Port SYS 2 — 1" BSPP; Port G — 1/4" BSPP; Ports D & AUX — 3/8" BSPP; Iron
See CAD Files tab below to request images.
Function
Function image

Technical specifications

  • Modifiers
    Ports
    • E, E/S
      Ports P, T, & SYS 1: 1" NPTF; Port SYS 2: 3/4" NPTF; Port G: 1/4" NPTF; Ports D & AUX: 3/8" NPTF;
    • F, F/S
      Ports P, T, & SYS 1: 1 1/4" NPTF; Port SYS 2: 1" NPTF; Port G: 1/4" NPTF; Ports D & AUX: 3/8" NPTF;
    • M, M/S
      Ports P, T, & SYS 1: SAE 16; Port SYS 2: SAE 12; Port G: SAE 4; Ports D & AUX: SAE 6;
    • N, N/S
      Ports P, T, & SYS 1: SAE 20; Port SYS 2: SAE 16; Port G: SAE 4; Ports D & AUX: SAE 6;
    • X, X/S
      Ports P, T, & SYS 1: 1" BSPP; Port SYS 2: 3/4" BSPP; Port G: 1/4" BSPP; Ports D & AUX: 3/8" BSPP;
    • Y, Y/S
      Ports P, T, & SYS 1: 1 1/4" BSPP; Port SYS 2: 1" BSPP; Port G: 1/4" BSPP; Ports D & AUX: 3/8" BSPP;
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    This valve assembly is meant to charge an accumulator using a fixed displacement pump. When the pressure reaches the set point of the valve, the pump is unloaded. When the pressure drops to the value determined by the fixed percentage of the pilot valve, the pump is brought back on line to recharge the accumulator. The ventable relief serves a dual purpose as a main stage to unload the pump and as a system over-pressure relief. The assembly has an additional feature; a simple circuit that softens the unloading of the pump.

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    • Body Type
      Line mount
    • Mounting Hole Thread
      .375-16 UNC - 2B in.
    • Mounting Hole Depth
      .88 in.
    • Mounting Hole Quantity
      3

    Model CAD Files

    Files not yet avialable. Click below to request them.

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    • Why doesn't Sun anodize their aluminum bodies?
    • How big is a drop of hydraulic oil?  
    • Direct acting or pilot operated - what do I use?
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    • Some applications may require additional volume for a smoother shift. Should this become necessary, an auxillary port has been provided to attach a length of hose for additional volume.
    • Important: Carefully consider the maximum system pressure. The pressure rating of the manifold is dependent on the manifold material, with the port type/size a secondary consideration. Manifolds constructed of aluminum are not rated for pressures higher than 3000 psi (210 bar), regardless of the port type/size specified.
    • For detailed information regarding the cartridges contained in this assembly, click on the models codes shown in the Included Components tab.
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