Modified on:
September 02,2026
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RVCLLJN
Name: FLeX Series 2-stage, solenoid-operated adjustable relief valve, energize to vent - RVCLLJN Description: This FLeX Series solenoid-operated, 2-stage, balanced relief cartridge is a pressure regulating valve.
The valve is normally in relief mode. In relief mode, the valve is open to tank (port 2), throttling flow to regulate the pressure when the pressure at the inlet (port 1) reaches the valve setting. The setting is adjustable with an adjust screw.
Energizing the solenoid opens the main chamber to tank and the valve becomes vented. The pressure drop from the inlet (port 1) to tank (port 2) is typically 100 psi (see performance curves).
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.
Designed and tested to 10-million operational cycles at full-rated pressure.
Exceeds new NFPA test standard T2.6.1 R2014 for fatigue and burst pressure ratings.
Higher flow rates than competing valves of similar size.
All configurations of this valve include zinc-nickel plating as standard for 1000-hour salt fog protection.
Coil connector options offer ratings up to IP69K. See individual coil product pages for details.
This cartridge utilizes both 740 Series high-power and 747 Series hazardous location coils.
Back pressure on the tank port (port 2) is directly additive to the valve setting at a 1:1 ratio.
Main stage orifice is protected by a 150-micron stainless steel screen.
Will accept maximum pressure at port 2.
All configurations of this valve are assembled with a non-removable adjust screw.
FLeX Series relief valves are fully compatible with the XMD Expandable Mobile Drivers from Sun.
A FULL DATA SHEET is available for this model using the link at the top of the page.
A wide variety of coil termination and voltage options are available, with and without surge protection. See the CONFIGURATION section.
Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation torque a
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10millioncycles
150micronscreen
25gpm
2stage
5000psi
740seriescoil
747seriescoil
adjustablerelief
automation
balancedpiston
cartridgevalve
deenergized
energizetorelief
engineering
failsafe
flexseries
floatingstyle
fluidcontrol
fluidpower
hydraulicsystem
hydraulicvalve
industrialhydraulics
ip69k
mobilehydraulics
nfpastandard
normallyvented
pilotoperated
pressurecontrol
pressuredrop
pressureregulation
reliefmode
reliefvalve
rvck
solenoidoperated
sunhydraulics
systemdesign
t10acavity
ventedmode
xmddriver
zincnickelplating