SUN HYDRAULICS
RSFSCWN

***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 RSFSCWN (RSFSCWN) is a pilot-operated, balanced poppet sequence valve designed to supply a secondary circuit with flow once the pressure at the inlet port 1 surpasses the valve setting. This valve effectively controls the pressure at port 1 relative to the pressure at drain port 3, remaining unaffected by back pressure at port 2 up to the valve setting. It can substitute for 2-port relief valves in scenarios where there's pressure in the return line. All three-port sequence cartridges are interchangeable, sharing the same flow path and cavity for a given frame size. The pilot flow increases as inlet pressure at port 1 exceeds drain pressure at port 3 above the valve setting. A stainless steel screen protects the main stage orifice from debris. The pressure at port 3 adds directly to the valve setting on a 1:1 ratio, with a maximum allowable limit of 5000 psi (350 bar). This makes it suitable for load-holding applications and cross-port relief circuits due to its ability to handle maximum pressures at port 2. The cartridge's internal modulation minimizes cavitation issues like noise and manifold erosion. Its floating style construction reduces risks of internal part binding from excessive installation torque or machining variations. Specifications include a cavity T-2A series with a capacity of 30 gpm (120 L/min), factory settings established at 4 gpm (15 L/min), and a maximum operating pressure of 5000 psi (350 bar). Typical response time is around 10 ms, with maximum leakage at reseat being approximately 10 drops/min (0.7 cc/min). Adjustment involves five clockwise turns to increase settings, with specific torque requirements for installation and locknut adjustments provided for optimal performance and reliability in hydraulic systems.