Created on 11/27/2015
c
2015 Sun Hydraulics Corporation See www.sunhydraulics.com for detailed product information 1 of 2
MODEL
RPGD
Air-controlled, pilot operated, balanced piston relief valve
SERIES 2 / CAPACITY: 200 L/min. / CAVITY: T-3A
Air-controlled, pilot-operated, balanced piston relief cartridges use compressed air over a diaphragm instead of an
adjustable spring to control pressure setting. The air signal is supplied through a port in the hex-end of the
cartridge. They 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
Pilot Ratio 20:1
Maximum Operating Pressure 140 bar
Response Time - Typical 10 ms
Maximum Valve Leakage at 110 SUS (24 cSt) 50 cc/min.@70 bar
Maximum Air Pressure 10,5 bar
Seal kit - Cartridge Buna: 990-203-007
Seal kit - Cartridge Polyurethane: 990-003-002
Seal kit - Cartridge Viton: 990-203-006
(A)CONTROL
A External 1/4 NPTF Port
(B)OPERATING RANGE
B 50 - 1500 psi (3,5 - 105 bar)
(N)SEAL MATERIAL
N Buna-N
V Viton
snhy.com/RPGD
TECHNICAL 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.
Maximum air pressure should not exceed 150 psi (10 bar).
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
Model Code Example: RPGDABNCONFIGURATION OPTIONS
Created on 11/27/2015
c
2015 Sun Hydraulics Corporation See www.sunhydraulics.com for detailed product information 2 of 2
