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Pressure reducing/relieving valve from Sun Hydraulics

Description

Direct-acting, pressure reducing/relieving valves reduce a high primary pressure at the inlet (port 2) to a constant reduced pressure at port 1, with a full-flow relief function from port 1 to tank (port 3). These valves incorporate a damped construction for stable operation allowing the use of high reduced pressure.

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  • Pressure at port 3 is directly additive to the valve setting at a 1:1 ratio and should not exceed 3000 psi (210 bar).
  • Leakage specified in Technical Data is out of port 3 with a supply pressure of 2000 psi (140 bar) and the valve set at mid range. This leakage is directly proportional to pressure differential and inversely proportional to viscosity expressed in centistokes.
  • 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.
  • All spring ranges are tested for correct operation with 5000 psi (350 bar) inlet pressure.
  • Suitable for accumulator circuits since the absence of pilot control flow results in reduced secondary circuit leakage.
  • Direct acting concept provides highly reliable operation in contaminated systems, especially at dead headed conditions.
  • Unlike pilot operated versions, direct acting valves exhibit a transitional step between reducing and relieving modes. This step equals 5% of the high end of the adjustment range, independent of the valve setting. Therefore, these valves may not be suitable for counterbalancing applications.
  • Direct operated version offers superior dynamic response compared to equivalent pilot operated models.
  • 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 0.25 gpm
Maximum Valve Leakage at 110 SUS (24 cSt) 5 in³/min.
Maximum Valve Leakage at 110 SUS (24 cSt) (metric) 80 cc/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 3.47 lb.
Model Weight (metric) 1.57 kg.
Seal kit – Cartridge Viton: 990019006

Configuration Options

Control

L ★ Standard Screw Adjustment
C Tamper Resistant – Factory Set
K Handknob

Adjustment Range

A ★ 750 – 3000 psi (50 – 210 bar), 1000 psi (70 bar) Standard Setting
B 300 – 1500 psi (20 – 105 bar), 500 psi (35 bar) Standard Setting
D 200 – 800 psi (14 – 55 bar), 400 psi (28 bar) Standard Setting
E 100 – 400 psi (7 – 28 bar), 200 psi (14 bar) Standard Setting
S 50 – 200 psi (3,5 – 14 bar), 100 psi (7 bar) Standard Setting
W 1100 – 4500 psi (76 – 315 bar), 1100 psi (76 bar) Standard Setting

Seal Material

N ★ Buna-N
V Viton
E EPDM

Material/Coating

/AP Stainless Steel, Passivated
Cavity: T-19A
Nominal Capacity: 320 lpm (80 gpm)
Downloads
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Possible variants

PRJBCAE, PRJB-CAE, PRJBCAN, PRJB-CAN, PRJBCAN/AP, PRJB-CAN/AP, PRJBCAV, PRJB-CAV, PRJBCAV/AP, PRJB-CAV/AP, PRJBCBE, PRJB-CBE, PRJBCBN, PRJB-CBN, PRJBCBN/AP, PRJB-CBN/AP, PRJBCBV, PRJB-CBV, PRJBCBV/AP, PRJB-CBV/AP, PRJBCDE, PRJB-CDE, PRJBCDN, PRJB-CDN, PRJBCDN/AP, PRJB-CDN/AP, PRJBCDV, PRJB-CDV, PRJBCDV/AP, PRJB-CDV/AP, PRJBCEE, PRJB-CEE, PRJBCEN, PRJB-CEN, PRJBCEN/AP, PRJB-CEN/AP, PRJBCEV, PRJB-CEV, PRJBCEV/AP, PRJB-CEV/AP, PRJBCSE, PRJB-CSE, PRJBCSN, PRJB-CSN, PRJBCSN/AP, PRJB-CSN/AP, PRJBCSV, PRJB-CSV, PRJBCSV/AP, PRJB-CSV/AP, PRJBCWE, PRJB-CWE, PRJBCWN, PRJB-CWN, PRJBCWN/AP, PRJB-CWN/AP, PRJBCWV, PRJB-CWV, PRJBCWV/AP, PRJB-CWV/AP, PRJBKAE, PRJB-KAE, PRJBKAN, PRJB-KAN, PRJBKAV, PRJB-KAV, PRJBKBE, PRJB-KBE, PRJBKBN, PRJB-KBN, PRJBKBV, PRJB-KBV, PRJBKDE, PRJB-KDE, PRJBKDN, PRJB-KDN, PRJBKDV, PRJB-KDV, PRJBKEE, PRJB-KEE, PRJBKEN, PRJB-KEN, PRJBKEV, PRJB-KEV, PRJBKSE, PRJB-KSE, PRJBKSN, PRJB-KSN, PRJBKSV, PRJB-KSV, PRJBKWE, PRJB-KWE, PRJBKWN, PRJB-KWN, PRJBKWV, PRJB-KWV, PRJBLAE, PRJB-LAE, PRJBLAN, PRJB-LAN, PRJBLAN/AP, PRJB-LAN/AP, PRJBLAV, PRJB-LAV, PRJBLAV/AP, PRJB-LAV/AP, PRJBLBE, PRJB-LBE, PRJBLBN, PRJB-LBN, PRJBLBN/AP, PRJB-LBN/AP, PRJBLBV, PRJB-LBV, PRJBLBV/AP, PRJB-LBV/AP, PRJBLDE, PRJB-LDE, PRJBLDN, PRJB-LDN, PRJBLDN/AP, PRJB-LDN/AP, PRJBLDV, PRJB-LDV, PRJBLDV/AP, PRJB-LDV/AP, PRJBLEE, PRJB-LEE, PRJBLEN, PRJB-LEN, PRJBLEN/AP, PRJB-LEN/AP, PRJBLEV, PRJB-LEV, PRJBLEV/AP, PRJB-LEV/AP, PRJBLSE, PRJB-LSE, PRJBLSN, PRJB-LSN, PRJBLSN/AP, PRJB-LSN/AP, PRJBLSV, PRJB-LSV, PRJBLSV/AP, PRJB-LSV/AP, PRJBLWE, PRJB-LWE, PRJBLWN, PRJB-LWN, PRJBLWN/AP, PRJB-LWN/AP, PRJBLWV, PRJB-LWV, PRJBLWV/AP, PRJB-LWV/AP

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