Sun Hydraulics Relief Valve - Balanced Piston - Pilot-operated - RPECLCN

Features
 • 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
 • 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

Specifications

 • Cavity :- T-10A
 • Series :- 1
 • Capacity :- 25 gpm95 L/min.
 • Factory Pressure Settings Established at :- 4 gpm15 L/min.
 • Maximum Operating Pressure :- 5000 psi350 bar
 • Maximum Valve Leakage at 110 SUS (24 cSt) :- 2 in³/min.@1000 psi30 cc/min.@70 bar
 • Response Time - Typical :- 10 ms10 ms
 • Adjustment - No. of CW Turns from Min. to Max. setting :- 55
 • Valve Hex Size :- 7/8 in.22,2 mm
 • Valve Installation Torque :- 30 - 35 lbf ft41 - 47 Nm
 • Adjustment Screw Internal Hex Size :- 5/32 in.4 mm
 • Locknut Hex Size :- 9/16 in.15 mm
 • Locknut Torque :- 80 - 90 lbf in.9 - 10 Nm
 • Model Weight :- 0.31 lb.0.14 kg.
 • Seal kit - Cartridge :- Buna: 990010007
 • Seal kit - Cartridge :- EPDM: 990010014
 • Seal kit - Cartridge :- Polyurethane: 990010002
 • Seal kit - Cartridge :- Viton: 990010006

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