SUN HYDRAULICS
RSFCCWN

***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 RSFCCWN (RSFCCWN) is a pilot-operated, balanced piston sequence valve designed to supply a secondary circuit with flow once the pressure at inlet port 1 surpasses the valve's set threshold. This valve efficiently manages pressure at port 1 relative to the drain port 3, remaining unaffected by back pressure at port 2 up to the valve setting. It serves as an alternative to two-port relief valves in systems where return line pressure exists. The RSFCCWN model is part of a series where all three-port sequence cartridges are interchangeable in both physical and functional aspects, maintaining consistent flow paths and cavity sizes for given frame dimensions. The valve features a main stage orifice shielded by a 150-micron stainless steel screen and can accommodate pressures at port 3 that are directly additive to the valve setting, not exceeding 5000 psi (350 bar). However, it is unsuitable for load holding applications due to spool leakage. The RSFCCWN allows for adjustable settings using W or Y controls, with options for special settings that define maximum limits. Cartridges with EPDM seals are compatible with phosphate ester fluids but are vulnerable to damage from petroleum-based substances. The design incorporates Sun's floating style construction to reduce risks of internal binding from excessive installation torque or machining variations. Additional specifications include a capacity of 30 gpm (120 L/min), factory pressure settings established at 4 gpm (15 L/min), maximum operating pressure of 5000 psi (350 bar), control pilot flow between 10\u201315 in\u00b3/min (0.16\u20130.25 L/min), typical response time of 10 ms, and maximum valve leakage of 3 in\u00b3/min at 110 SUS (24 cSt) under conditions of 1000 psi (50 cc/min) at 70 bar. Installation requires specific torque values and hex sizes for adjustment screws and locknuts, ensuring precise setup and operation.