Created on 11/27/2015
c
2015 Sun Hydraulics Corporation See www.sunhydraulics.com for detailed product information 1 of 2
MODEL
RPIC
Pilot operated, balanced piston relief valve
SERIES 3 / CAPACITY: 380 L/min. / CAVITY: T-16A
Pilot-operated, balanced-piston 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, have low pressure rise vs. flow, they are smooth and quiet, and are
moderately fast.
TECHNICAL DATA
Factory Pressure Settings Established at 15 L/min.
Maximum Operating Pressure 350 bar
Response Time - Typical 10 ms
Maximum Valve Leakage at 110 SUS (24 cSt) 65 cc/min.@70 bar
Adjustment - Number of Clockwise Turns to Increase Setting 5
Locknut Hex Size 15 mm
Locknut Torque 9 - 10 Nm
Seal kit - Cartridge Buna: 990-016-007
Seal kit - Cartridge EPDM: 990-016-014
Seal kit - Cartridge Polyurethane: 990-016-002
Seal kit - Cartridge Viton: 990-016-006
(L)CONTROL
L Standard Screw Adjustment
C Tamper Resistant - Factory Set
W Hex Wrench Adjustment
Y Tri-Grip Handknob
(A)ADJUSTMENT RANGE
A 100 - 3000 psi (7 - 210 bar), 1000 psi
(70 bar) Standard Setting
W 150 - 4500 psi (10,5 - 315 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
D 25 - 800 psi (1,7 - 55 bar), 400 psi (28
bar) Standard Setting
E 25 - 400 psi (1,7 - 28 bar), 200 psi (14
bar) Standard Setting
N 60 - 800 psi (4 - 55 bar), 400 psi (28
bar) Standard Setting
(N)SEAL MATERIAL
N Buna-N
E EPDM
V Viton
MATERIAL/COATING
Standard Material/Coating
/AP Stainless Steel, Passivated
/LH Mild Steel, Zinc-Nickel
snhy.com/
RPIC
Model Code Example: RPICLANCONFIGURATION OPTIONS
Created on 11/27/2015
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2015 Sun Hydraulics Corporation See www.sunhydraulics.com for detailed product information 2 of 2
bar) Standard Setting
Q 60 - 400 psi (4 - 28 bar), 200 psi (14
bar) Standard Setting
TECHNICAL FEATURES
Will accept maximum pressure at port 2; suitable for use in cross port relief circuits. If used in cross port relief circuits, consider spool leakage.
Main stage orifice is protected by a 150 micron stainless steel screen.
Not suitable for use in load holding applications due to spool leakage.
Back pressure on the tank port (port 2) is directly additive to the valve setting at a 1:1 ratio.
All 2-port relief cartridges (except pilot reliefs) are physically and functionally interchangeable (same flow path, same cavity for a given frame size).
Cartridges configured with EPDM seals are for use in systems with phosphate ester fluids. Exposure to petroleum based fluids, greases and lubricants will damage
the seals.
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
RPIC8 Pilot operated, balanced piston relief main stage with integral T-8A control cavity
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