SUN HYDRAULICS
RSFCJCN

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Sun Hydraulics directly.***
The Sun Hydraulics RSFCJCN (RSFCJCN) is a pilot-operated, balanced piston sequence valve designed to supply a secondary circuit with flow once the pressure at inlet port 1 exceeds the valve setting. This valve effectively controls the pressure at port 1 relative to the drain port 3 and remains insensitive to back pressure at port 2 up to the valve setting, making it a potential substitute for 2-port relief valves in systems with return line pressure. The RSFCJCN features interchangeable 3-port sequence cartridges, ensuring compatibility in terms of flow path and cavity size for a given frame. As pressure at port 1 increases relative to port 3, pilot flow continues to rise above the valve setting. The main stage orifice is safeguarded by a durable 150-micron stainless steel screen. With a maximum operating pressure of 5000 psi (350 bar), this valve is not suitable for load-holding applications due to potential spool leakage. The RSFCJCN offers adjustable settings using W or Y controls, with options for special settings that represent maximum values. It incorporates EPDM seals for compatibility with phosphate ester fluids while being vulnerable to petroleum-based substances. Sun\u2019s floating style construction minimizes internal binding risks during installation or due to machining variations. Specifications include a capacity of 30 gpm (120 L/min), factory pressure settings established at 4 gpm (15 L/min), control pilot flow between 10-15 in\u00b3/min (0.16-0.25 L/min), typical response time of 10 ms, and maximum leakage of 3 in\u00b3/min at 110 SUS (24 cSt) and 1000 psi (50 cc/min at 70 bar). Installation requires specific torque values: valve hex size of 1-1/8 in., torque between 45-50 lbf\u00b7ft (61-68 Nm), adjustment screw internal hex size of 5/32 in., locknut hex size of 9/16 in., and torque ranging from 80-90 lbf\u00b7in (9-10 Nm). The model weighs approximately .50 lb (0.25 kg).