SUN HYDRAULICS
RSFCJPN

***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 RSFCJPN (RSFCJPN) is a pilot-operated, balanced piston sequence valve designed to supply a secondary circuit with flow once the pressure at the inlet port 1 surpasses the valve setting. It regulates pressure at port 1 relative to the drain port 3 and remains unaffected by back pressure at port 2 up to the valve setting. This feature makes it suitable for applications requiring pressure regulation instead of using two-port relief valves, especially when there is pressure in the return line. The RSFCJPN model is functionally interchangeable with other three-port sequence cartridges, sharing the same flow path and cavity dimensions for a given frame size. Its main stage orifice is protected by a durable 150-micron stainless steel screen. This valve has specific operational capabilities: it can handle up to 5000 psi (350 bar) at port 3, which adds directly to the valve setting on a one-to-one ratio. However, it is not suitable for load-holding applications due to spool leakage. The RSFCJPN offers adjustable settings with W and Y controls, allowing fine-tuning throughout its full range unless a special maximum setting is specified. The cartridge features EPDM seals for phosphate ester fluid systems but should not be used with petroleum-based fluids as they may damage the seals. It incorporates Sun's floating style construction to reduce binding risks due to installation torque or machining variations. Additional specifications include a capacity of 30 gpm (120 L/min), maximum operating pressure of 5000 psi (350 bar), control pilot flow of 10-15 in\u00b3/min (0.16-0.25 L/min), and typical response time of 10 ms. The maximum valve leakage is measured at 3 in\u00b3/min under specific conditions, and adjustments can be made via an internal hex screw with five clockwise turns increasing the setting. Installation requires specific torque values for both the valve and locknut components, ensuring secure placement within hydraulic systems.