c
2025 Sun Hydraulics 1 of 2
MODEL
RPETRPET
Anti-Shock, pilot-operated, balanced poppet relief valve
SERIESSERIES 1 / 1 / CAPACITY:CAPACITY: 95 L/min. / 95 L/min. / CAVITY:CAVITY: T-10A T-10A
NOTE: DATA MAY VARY BY CONFIGURATION. SEE CONFIGURATION SECTION.
Pilot-operated, anti shock relief cartridges limit maximum system pressure and also limit the
rate of pressure rise. The valve opens and then ramps closed at a constant speed,
independent of settings and flows. The adjust screw determines the maximum (relief) setting
and the minimum (threshold) setting.
TECHNICAL DATATECHNICAL DATA
Cavity T-10A
Series 1
Capacity 95 L/min.
Maximum Operating Pressure 350 bar
Factory Pressure Settings Established at 15 L/min.
Control Pilot Flow 0,16 - 0,41 L/min.
Pressure Ramp Up Time 100 - 300 ms
Response Time - Typical 2 ms
Adjustment - No. of CW Turns from Min. to Max. setting 4.5
Valve Hex Size 22,2 mm
Valve Installation Torque 41 - 47 Nm
Adjustment Screw Internal Hex Size 4 mm
Locknut Hex Size 15 mm
Locknut Torque 9 - 10 Nm
U.S. Patent # 6,039,070
Seal kit - Cartridge Buna: 990310007
Seal kit - Cartridge Viton: 990310006
Model Weight 0.22 kg.
sunhydraulics.com/model/
RPET
c
2025 Sun Hydraulics 2 of 2
(L)(L)CONTROLCONTROL
LL Standard Screw Adjustment
CC Tamper Resistant - Factory Set
(W)(W)ADJUSTMENT RANGEADJUSTMENT RANGE
WW 3000 - 4500 psi (210 - 315 bar),
3000 psi (210 bar) Standard
Setting
AA 2000 - 3000 psi (140 - 210 bar),
2000 psi (140 bar) Standard
Setting
CC 4500 - 6000 psi (315 - 420 bar),
4500 psi (315 bar) Standard
Setting
(N)(N)SEAL MATERIALSEAL MATERIAL
NN Buna-N
VV Viton
MATERIAL/COATINGMATERIAL/COATING
Standard Material/Coating
/AP/AP Stainless Steel, Passivated
/LH/LH Mild Steel, Zinc-Nickel
TECHNICAL FEATURESTECHNICAL FEATURES
All 2-port relief cartridges (except pilot reliefs) are physically and functionally interchangeable (same flow path, same cavity for a
given frame size).
Will accept maximum pressure at port 2; suitable for use in cross port relief circuits.
Not suitable for use in load holding applications.
When pressure at the inlet (port 1) exceeds the threshold setting, the valve opens to tank (port 2). The pilot section moves forward
at a steady rate, increasing the setting by compressing the pilot spring. Maximum setting is achieved when the pilot section reaches
a mechanical stop.
Valve provides protection for pumps and motors from pressure transients due to sudden load changes, especially variable
displacement pumps, since the displacement mechanism is sometimes too slow to catch these pressure transients.
Valve provides protection for hydrostatic drives by reducing the jerk caused by sudden reversals. The valve is suitable for cross-port
applications.
When used with a switching device, the valve can provide the ramp characteristic typically provided by proportional valves.
Small power units can be started against an anti shock relief to provide longer pump life.
Back pressure on the tank port (port 2) is directly additive to the valve setting at a 1:1 ratio.
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 CURVESPERFORMANCE CURVES
Model Code Example: RPETLWNModel Code Example: RPETLWNCONFIGURATION OPTIONSCONFIGURATION OPTIONS
