Created on 10/01/2015
c
2015 Sun Hydraulics Corporation See www.sunhydraulics.com for detailed product information 1 of 2
MODEL
RPGS
Pilot operated, balanced poppet relief valve
SERIES 2 / CAPACITY: 200 L/min. / CAVITY: T-3A
Pilot-operated, balanced-poppet relief cartridges are normally closed pressure regulating valves. When the
pressure at the inlet (port 1) reaches the valve setting, the valve starts to open to tank (port 2), throttling flow to
regulate the pressure. These valves are accurate, smooth, quiet, fast, and have low pressure rise vs. flow.
TECHNICAL DATA
Factory Pressure Settings Established at 15 L/min.
Maximum Operating Pressure 350 bar
Response Time - Typical 7 ms
Maximum Valve Leakage at Reseat 0,7 cc/min.
Adjustment - Number of Clockwise Turns to Increase Setting 5
Locknut Hex Size 15 mm
Locknut Torque 9 - 10 Nm
Seal kit - Cartridge Buna: 990-303-007
Seal kit - Cartridge EPDM: 990-303-014
Seal kit - Cartridge Polyurethane: 990-303-002
Seal kit - Cartridge Viton: 990-303-006
(L)CONTROL
L Standard Screw Adjustment
C Tamper Resistant - Factory Set
K Handknob
Y Tri-Grip Handknob
(A)ADJUSTMENT RANGE
A 100 - 3000 psi (7 - 210 bar), 1000 psi
(70 bar) Standard Setting
B 50 - 1500 psi (3,5 - 105 bar), 1000 psi
(70 bar) Standard Setting
C 150 - 6000 psi (10,5 - 420 bar), 1000
psi (70 bar) Standard Setting
N 60 - 800 psi (4 - 55 bar), 400 psi (28
bar) Standard Setting
Q 60 - 400 psi (4 - 28 bar), 200 psi (14
bar) Standard Setting
W 100 - 4500 psi (7 - 315 bar), 1000 psi
(70 bar) Standard Setting
(N)SEAL MATERIAL
N Buna-N
E EPDM
V Viton
MATERIAL/COATING
Standard Material/Coating
/AP Stainless Steel, Passivated
snhy.com/RPGS
TECHNICAL FEATURES
Because the modulating occurs inside the cartridge, these valves are immune to most of the problems associated with cavitation, namely noise and manifold
erosion.
Will accept maximum pressure at port 2; suitable for use in cross port relief circuits.
Model Code Example: RPGSLANCONFIGURATION OPTIONS
Created on 10/01/2015
c
2015 Sun Hydraulics Corporation See www.sunhydraulics.com for detailed product information 2 of 2
Valve is relatively insensitive to varying oil temperatures and oil borne contamination.
Main stage orifice is protected by a 150 micron stainless steel screen.
Suitable for use in load holding applications.
Back pressure on the tank port (port 2) is directly additive to the valve setting at a 1:1 ratio.
W and Y controls (where applicable) can be specified with or without a special setting. When no special setting is specified, the valve is adjustable throughout its full
range using the W or Y control. When a special setting is specified, this setting represents the maximum setting of the valve.
Corrosion resistant cartridge valves are intended for use in corrosive environments and are identified by the model code suffix /AP for external stainless steel
components, or /LH for external zinc-nickel plated components. See the CONFIGURATION section for all options. For further details, please see the Materials of
Construction page located under TECH RESOURCES.
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
RPGS8 Pilot operated, balanced poppet relief main stage with integral T-8A control cavity
