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SUN HYDRAULICS
PBJBQWV


$371.10 USD

Tags:

  • SUN HYDRAULICS
  • Material:PBJBQWV
  • Model:PBJB-QWV
  • Summary:Cartridge

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***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Sun Hydraulics directly.***
The Sun Hydraulics PBJBQWV (PBJBQWV) is a pilot-operated pressure reducing valve designed to reduce a high primary pressure at inlet port 2 to a constant reduced pressure at port 1. This allows circuits with multiple pressure requirements to operate using a single pump. The valve is part of the three-port pressure reducing and reducing-relieving cartridge family, which are physically interchangeable due to their consistent flow path and cavity size. For applications requiring reverse flow from reduced pressure port 1 to inlet port 2, it is recommended to add a separate check valve, as the main spool may close under such conditions. This model features a main stage orifice protected by a 150-micron stainless steel screen and can handle maximum differential pressures depending on the adjustment range: up to 2000 psi for ranges D, E, N, and Q; up to 3000 psi for ranges A, B, and H; and up to 5000 psi for ranges C and W. The PBJBQWV valve exhibits stable performance with low hysteresis and exceptionally flat pressure-flow characteristics. It incorporates Sun's floating style construction to minimize internal parts binding due to installation torque or machining variations. The valve has a control pilot flow rate of 15-20 in\u00b3/min (0.25-0.33 L/min) and can be adjusted with up to five clockwise turns of the adjustment screw. It also includes an EPDM seal option for systems using phosphate ester fluids. The PBJBQWV model weighs approximately 2.90 lb (1.30 kg) and fits into a T-19A cavity series with an operating capacity of 80 gpm (320 L/min). The maximum operating pressure for this model is rated at 5000 psi (350 bar), making it suitable for high-pressure hydraulic systems requiring precise pressure regulation across varying circuit demands.

Pilot-operated, pressure reducing valves reduce a high primary pressure at the inlet (port 2) to a constant reduced pressure at port 1, allowing circuits with multiple pressure requirements to be operated using a single pump.

  • 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.
  • Main stage orifice is protected by a 150 micron stainless steel screen.
  • 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.

CavityT-19A
Series4
Capacity80 gpm320 L/min.
Factory Pressure Settings Established atblocked control port (dead headed)blocked control port (dead headed)
Maximum Operating Pressure5000 psi350 bar
Control Pilot Flow15 - 20 in³/min.0,25 - 0,33 L/min.
Adjustment - Number of Clockwise Turns to Increase Setting55
Valve Hex Size1 5/8 in.41,3 mm
Valve Installation Torque350 - 375 lbf ft474 - 508 Nm
Adjustment Screw Internal Hex Size5/32 in.4 mm
Locknut Hex Size9/16 in.15 mm
Locknut Torque80 - 90 lbf in.9 - 10 Nm
Model Weight2.90 lb1,30 kg
Seal kit - CartridgeViton: 990-019-006

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Notes:
  • 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