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PBJF

Pressure reducing valve from Sun Hydraulics

Description

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.

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  • These valves have the main stage orifice drilled into the piston rather than a staked-in orifice. This allows the valve to survive physically demanding applications.
  • 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.
  • 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.
  • 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.
  • 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.

Technical Data

Note: Data may vary by configuration. See CONFIGURATION section.

Cavity T-19A
Series 4
Capacity 80 gpm
Capacity (metric) 320 L/min.
Maximum Operating Pressure 5000 psi
Maximum Operating Pressure (metric) 350 bar
Factory Pressure Settings Established at blocked control port (dead headed)
Control Pilot Flow 15 – 20 in³/min.
Control Pilot Flow (metric) 0,25 – 0,33 L/min.
Adjustment – No. of CW Turns from Min. to Max. setting 5
Valve Hex Size 1 5/8 in.
Valve Hex Size (metric) 41,3 mm
Valve Installation Torque 350 – 375 lbf ft
Valve Installation Torque (metric) 474 – 508 Nm
Adjustment Screw Internal Hex Size 5/32 in.
Adjustment Screw Internal Hex Size (metric) 4 mm
Locknut Hex Size 9/16 in.
Locknut Hex Size (metric) 15 mm
Locknut Torque 80 – 90 lbf in.
Locknut Torque (metric) 9 – 10 Nm
Model Weight 2.89 lb.
Model Weight (metric) 1.31 kg.
Seal kit – Cartridge Viton: 990019006

Configuration Options

Control

C Tamper Resistant – Factory Set
K Handknob
L Standard Screw Adjustment
N Capped Screw Adjustment with Lockwire Holes

Adjustment Range

A 100 – 3000 psi (7 – 210 bar), 200 psi (14 bar) Standard Setting
B 50 – 1500 psi (3,5 – 105 bar), 200 psi (14 bar) Standard Setting
C 150 – 6000 psi (10,5 – 420 bar), 200 psi (14 bar) Standard Setting
D 25 – 800 psi (1,7 – 55 bar), 200 psi (14 bar) Standard Setting
E 25 – 400 psi (1,7 – 28 bar), 200 psi (14 bar) Standard Setting
N 60 – 800 psi (4 – 55 bar), 200 psi (14 bar) Standard Setting
Q 60 – 400 psi (4 – 28 bar), 200 psi (14 bar) Standard Setting
W 100 – 4500 psi (7 – 315 bar), 200 psi (14 bar) Standard Setting

Seal Material

N Buna-N
V Viton
E EPDM

Material/Coating

/LH Mild Steel, Zinc-Nickel
Cavity: T-19A
Nominal Capacity: 320 lpm (80 gpm)
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Possible variants

PBJF8DN, PBJF-8DN, PBJF8DV, PBJF-8DV, PBJF8WN, PBJF-8WN, PBJF8WV, PBJF-8WV, PBJFCAE, PBJF-CAE, PBJFCAN, PBJF-CAN, PBJFCAN/LH, PBJF-CAN/LH, PBJFCAV, PBJF-CAV, PBJFCAV/LH, PBJF-CAV/LH, PBJFCBE, PBJF-CBE, PBJFCBN, PBJF-CBN, PBJFCBN/LH, PBJF-CBN/LH, PBJFCBV, PBJF-CBV, PBJFCBV/LH, PBJF-CBV/LH, PBJFCCE, PBJF-CCE, PBJFCCN, PBJF-CCN, PBJFCCN/LH, PBJF-CCN/LH, PBJFCCV, PBJF-CCV, PBJFCCV/LH, PBJF-CCV/LH, PBJFCDE, PBJF-CDE, PBJFCDN, PBJF-CDN, PBJFCDN/LH, PBJF-CDN/LH, PBJFCDV, PBJF-CDV, PBJFCDV/LH, PBJF-CDV/LH, PBJFCEE, PBJF-CEE, PBJFCEN, PBJF-CEN, PBJFCEN/LH, PBJF-CEN/LH, PBJFCEV, PBJF-CEV, PBJFCEV/LH, PBJF-CEV/LH, PBJFCNE, PBJF-CNE, PBJFCNN, PBJF-CNN, PBJFCNN/LH, PBJF-CNN/LH, PBJFCNV, PBJF-CNV, PBJFCNV/LH, PBJF-CNV/LH, PBJFCQE, PBJF-CQE, PBJFCQN, PBJF-CQN, PBJFCQN/LH, PBJF-CQN/LH, PBJFCQV, PBJF-CQV, PBJFCQV/LH, PBJF-CQV/LH, PBJFCWE, PBJF-CWE, PBJFCWN, PBJF-CWN, PBJFCWN/LH, PBJF-CWN/LH, PBJFCWV, PBJF-CWV, PBJFCWV/LH, PBJF-CWV/LH, PBJFKAE, PBJF-KAE, PBJFKAN, PBJF-KAN, PBJFKAV, PBJF-KAV, PBJFKBE, PBJF-KBE, PBJFKBN, PBJF-KBN, PBJFKBV, PBJF-KBV, PBJFKCE, PBJF-KCE, PBJFKCN, PBJF-KCN, PBJFKCV, PBJF-KCV, PBJFKDE, PBJF-KDE, PBJFKDN, PBJF-KDN, PBJFKDV, PBJF-KDV, PBJFKEE, PBJF-KEE, PBJFKEN, PBJF-KEN, PBJFKEV, PBJF-KEV, PBJFKNE, PBJF-KNE, PBJFKNN, PBJF-KNN, PBJFKNV, PBJF-KNV, PBJFKQE, PBJF-KQE, PBJFKQN, PBJF-KQN, PBJFKQV, PBJF-KQV, PBJFKWE, PBJF-KWE, PBJFKWN, PBJF-KWN, PBJFKWV, PBJF-KWV, PBJFLAE, PBJF-LAE, PBJFLAN, PBJF-LAN, PBJFLAN/LH, PBJF-LAN/LH, PBJFLAV, PBJF-LAV, PBJFLAV/LH, PBJF-LAV/LH, PBJFLBE, PBJF-LBE, PBJFLBN, PBJF-LBN, PBJFLBN/LH, PBJF-LBN/LH, PBJFLBV, PBJF-LBV, PBJFLBV/LH, PBJF-LBV/LH, PBJFLCE, PBJF-LCE, PBJFLCN, PBJF-LCN, PBJFLCN/LH, PBJF-LCN/LH, PBJFLCV, PBJF-LCV, PBJFLCV/LH, PBJF-LCV/LH, PBJFLDE, PBJF-LDE, PBJFLDN, PBJF-LDN, PBJFLDN/LH, PBJF-LDN/LH, PBJFLDV, PBJF-LDV, PBJFLDV/LH, PBJF-LDV/LH, PBJFLEE, PBJF-LEE, PBJFLEN, PBJF-LEN, PBJFLEN/LH, PBJF-LEN/LH, PBJFLEV, PBJF-LEV, PBJFLEV/LH, PBJF-LEV/LH, PBJFLNE, PBJF-LNE, PBJFLNN, PBJF-LNN, PBJFLNN/LH, PBJF-LNN/LH, PBJFLNV, PBJF-LNV, PBJFLNV/LH, PBJF-LNV/LH, PBJFLQE, PBJF-LQE, PBJFLQN, PBJF-LQN, PBJFLQN/LH, PBJF-LQN/LH, PBJFLQV, PBJF-LQV, PBJFLQV/LH, PBJF-LQV/LH, PBJFLWE, PBJF-LWE, PBJFLWN, PBJF-LWN, PBJFLWN/LH, PBJF-LWN/LH, PBJFLWV, PBJF-LWV, PBJFLWV/LH, PBJF-LWV/LH, PBJFNAE, PBJF-NAE, PBJFNAN, PBJF-NAN, PBJFNAV, PBJF-NAV, PBJFNBE, PBJF-NBE, PBJFNBN, PBJF-NBN, PBJFNBV, PBJF-NBV, PBJFNCE, PBJF-NCE, PBJFNCN, PBJF-NCN, PBJFNCV, PBJF-NCV, PBJFNDE, PBJF-NDE, PBJFNDN, PBJF-NDN, PBJFNDV, PBJF-NDV, PBJFNEE, PBJF-NEE, PBJFNEN, PBJF-NEN, PBJFNEV, PBJF-NEV, PBJFNNE, PBJF-NNE, PBJFNNN, PBJF-NNN, PBJFNNV, PBJF-NNV, PBJFNQE, PBJF-NQE, PBJFNQN, PBJF-NQN, PBJFNQV, PBJF-NQV, PBJFNWE, PBJF-NWE, PBJFNWN, PBJF-NWN, PBJFNWV, PBJF-NWV