You are using an outdated browser. For a faster, safer browsing experience, upgrade for free today.

SUN HYDRAULICS
PBJBNJN


$366.10 USD

Tags:

  • SUN HYDRAULICS
  • Material:PBJBNJN
  • Model:PBJB-NJN
  • Summary:Cartridge

Quantity in stock: 0

Note: Sales tax, and shipping will be calculated at checkout.
***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 PBJBNJN (PBJBNJN) is a pilot-operated, pressure reducing valve designed to reduce a high primary pressure at the inlet port 2 to a constant reduced pressure at port 1. This feature allows circuits with multiple pressure requirements to operate using a single pump. The valve is physically interchangeable with all three-port pressure reducing and reducing-relieving cartridges, sharing the same flow path and cavity for a given frame size. It is recommended that a full capacity return line port 3 be used with reducing-relieving cartridges for optimal performance. If reverse free flow is needed in the circuit, adding a separate check valve is advisable as full reverse flow from reduced pressure port 1 to inlet port 2 may cause the main spool to close. The valve's main stage orifice is protected by a 150-micron stainless steel screen, ensuring durability and reliability. It exhibits exceptionally flat pressure-flow characteristics, stability, and low hysteresis, although it is not fast-acting; for superior dynamic response, direct-acting valves are suggested. The maximum operating pressure for this model reaches up to 5000 psi (350 bar), with various adjustment ranges tested at different maximum differential pressures. Additionally, this cartridge incorporates Sun's floating style construction to minimize internal part binding due to excessive installation torque or machining variations in the cavity/cartridge. The PBJBNJN model has specific installation requirements including torque settings and adjustment specifications that ensure proper operation within hydraulic systems. Cartridges configured with EPDM seals are suitable for use in systems with phosphate ester fluids but should avoid exposure to petroleum-based fluids which can damage the seals.

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

Show FAQ

Additional Resources



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