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Pressure reducing/relieving valve from Sun Hydraulics

Description

Ventable, pilot-operated pressure reducing/relieving valves reduce a high primary pressure at the inlet to a constant reduced pressure at port 1, with a full-flow relief function from port 1 to tank (port 3). The vent port (port 4) can be used as a means for remote control by pilot or 2-way valves.

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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).
  • 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.
  • Pilot operated valves exhibit very low dead-band transition between reducing and relieving modes.
  • 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.
  • By controlling the pressure at the vent (port 4), the effective setting of the valve can be controlled below the nominal valve setting.
  • 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-22A
Series 2
Capacity 20 gpm
Capacity (metric) 80 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 10 – 15 in³/min.
Control Pilot Flow (metric) 0,16 – 0,25 L/min.
Adjustment – No. of CW Turns from Min. to Max. setting 5
Valve Hex Size 1 1/8 in.
Valve Hex Size (metric) 28,6 mm
Valve Installation Torque 45 – 50 lbf ft
Valve Installation Torque (metric) 61 – 68 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 0.74 lb.
Model Weight (metric) 0.34 kg.
Seal kit – Cartridge Viton: 990022006

Configuration Options

Control

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

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
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
W 150 – 4500 psi (10,5 – 315 bar), 200 psi (14 bar) Standard Setting
H 30 – 3000 psi (2 – 210 bar), 200 psi (14 bar) Standard Setting
J 25 – 1500 psi (1,7 – 105 bar), 200 psi (14 bar) Standard Setting

Seal Material

N Buna-N
V Viton

Material/Coating

/AP Stainless Steel, Passivated
Cavity: T-22A
Nominal Capacity: 80 lpm (20 gpm)
Downloads
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Possible variants

PVFBCAN, PVFB-CAN, PVFBCAN/AP, PVFB-CAN/AP, PVFBCAV, PVFB-CAV, PVFBCAV/AP, PVFB-CAV/AP, PVFBCBN, PVFB-CBN, PVFBCBN/AP, PVFB-CBN/AP, PVFBCBV, PVFB-CBV, PVFBCBV/AP, PVFB-CBV/AP, PVFBCDN, PVFB-CDN, PVFBCDN/AP, PVFB-CDN/AP, PVFBCDV, PVFB-CDV, PVFBCDV/AP, PVFB-CDV/AP, PVFBCEN, PVFB-CEN, PVFBCEN/AP, PVFB-CEN/AP, PVFBCEV, PVFB-CEV, PVFBCEV/AP, PVFB-CEV/AP, PVFBCHN, PVFB-CHN, PVFBCHN/AP, PVFB-CHN/AP, PVFBCHV, PVFB-CHV, PVFBCHV/AP, PVFB-CHV/AP, PVFBCJN, PVFB-CJN, PVFBCJN/AP, PVFB-CJN/AP, PVFBCJV, PVFB-CJV, PVFBCJV/AP, PVFB-CJV/AP, PVFBCWN, PVFB-CWN, PVFBCWN/AP, PVFB-CWN/AP, PVFBCWV, PVFB-CWV, PVFBCWV/AP, PVFB-CWV/AP, PVFBKAN, PVFB-KAN, PVFBKAV, PVFB-KAV, PVFBKBN, PVFB-KBN, PVFBKBV, PVFB-KBV, PVFBKDN, PVFB-KDN, PVFBKDV, PVFB-KDV, PVFBKEN, PVFB-KEN, PVFBKEV, PVFB-KEV, PVFBKHN, PVFB-KHN, PVFBKHV, PVFB-KHV, PVFBKJN, PVFB-KJN, PVFBKJV, PVFB-KJV, PVFBKWN, PVFB-KWN, PVFBKWV, PVFB-KWV, PVFBLAN, PVFB-LAN, PVFBLAN/AP, PVFB-LAN/AP, PVFBLAV, PVFB-LAV, PVFBLAV/AP, PVFB-LAV/AP, PVFBLBN, PVFB-LBN, PVFBLBN/AP, PVFB-LBN/AP, PVFBLBV, PVFB-LBV, PVFBLBV/AP, PVFB-LBV/AP, PVFBLDN, PVFB-LDN, PVFBLDN/AP, PVFB-LDN/AP, PVFBLDV, PVFB-LDV, PVFBLDV/AP, PVFB-LDV/AP, PVFBLEN, PVFB-LEN, PVFBLEN/AP, PVFB-LEN/AP, PVFBLEV, PVFB-LEV, PVFBLEV/AP, PVFB-LEV/AP, PVFBLHN, PVFB-LHN, PVFBLHN/AP, PVFB-LHN/AP, PVFBLHV, PVFB-LHV, PVFBLHV/AP, PVFB-LHV/AP, PVFBLJN, PVFB-LJN, PVFBLJN/AP, PVFB-LJN/AP, PVFBLJV, PVFB-LJV, PVFBLJV/AP, PVFB-LJV/AP, PVFBLWN, PVFB-LWN, PVFBLWN/AP, PVFB-LWN/AP, PVFBLWV, PVFB-LWV, PVFBLWV/AP, PVFB-LWV/AP