Created on 07/07/2015
c
2015 Sun Hydraulics Corporation See www.sunhydraulics.com for detailed product information 1 of 2
MODEL
PVJA
Pilot operated, pressure reducing/relieving valve with drain to port 4
SERIES 4 / CAPACITY: 320 L/min. / CAVITY: T-24A
Externally drained, pilot-operated 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).
Draining the pilot section at port 4 makes these valves insensitive to pressure at tank (port 3) and provides a means
for remote control by pilot or 2-way valves.
TECHNICAL DATA
Factory Pressure Settings Established at blocked control port (dead headed)
Maximum Operating Pressure 350 bar
Control Pilot Flow 0,25 - 0,33 L/min.
Adjustment - Number of Clockwise Turns to Increase Setting 5
Locknut Hex Size 15 mm
Locknut Torque 9 - 10 Nm
Seal kit - Cartridge Buna: 990-024-007
Seal kit - Cartridge Polyurethane: 990-024-002
Seal kit - Cartridge Viton: 990-024-006
(L)CONTROL
L Standard Screw Adjustment
C Tamper Resistant - Factory Set
K Handknob
(A)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
(N)SEAL MATERIAL
N Buna-N
E EPDM
V Viton
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PVJA
TECHNICAL FEATURES
Maximum pressure at port 3 should be limited to 3000 psi (210 bar).
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
Maximum pressure differentials for spring ranges: A and B are 3000 psi (210 bar) D and E are 2000 psi (140 bar) W is 5000 psi (350 bar) inlet pressure
NOTES
Model Code Example: PVJALANCONFIGURATION OPTIONS
Created on 07/07/2015
c
2015 Sun Hydraulics Corporation See www.sunhydraulics.com for detailed product information 2 of 2
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 on the drain (port 4) 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.
By controlling the pressure at the drain (port 4), the effective setting of the valve can be increased over 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.
PERFORMANCE CURVES
RELATED MODELS
PVJA8 Pilot operated, pressure reducing/relieving main stage with integral T-8A control cavity and drain to port 4