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SUN HYDRAULICS
PBJBQJV


$374.10 USD

Tags:

  • SUN HYDRAULICS
  • Material:PBJBQJV
  • Model:PBJB-QJV
  • 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 PBJBQJV (PBJBQJV) is a pilot-operated pressure reducing valve designed to manage high primary pressure at the inlet port, reducing it to a consistent lower pressure at port 1. This feature allows for operation in circuits with varying pressure requirements using a single pump. The valve is physically interchangeable with other three-port pressure reducing and relieving cartridges, which share the same flow path and cavity size. For optimal performance in certain mounting configurations, utilizing a full capacity return line at port 3 is recommended when using reducing-relieving cartridges. The valve can handle full reverse flow from the reduced pressure port to the inlet, though this may close the main spool; adding a separate check valve is advisable if reverse free flow is necessary. The PBJBQJV features a main stage orifice protected by a 150-micron stainless steel screen, ensuring durability and reliability under various conditions. It operates effectively within specific maximum inlet pressures based on adjustment ranges, with ranges A, B, and H tested up to 3000 psi differential between inlet and reduced pressures. The valve exhibits stable performance with low hysteresis due to its pilot-operated design but is not intended for applications requiring fast response times\u2014direct acting valves are recommended in such cases. This model incorporates Sun's floating style construction to reduce internal part binding risks due to excessive installation torque or cavity machining variations. It also accommodates EPDM seals for systems using phosphate ester fluids while being incompatible with petroleum-based fluids. With a capacity of 80 gpm (320 L/min) and maximum operating pressure of 5000 psi (350 bar), the PBJBQJV offers robust performance for demanding hydraulic applications.

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