SUN HYDRAULICS
RSBCLNN

***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 RSBCLNN (RSBCLNN) is a pilot-operated, balanced piston sequence valve designed to supply a secondary circuit with flow once the pressure at the inlet port exceeds a predefined setting. This valve effectively controls pressure at port 1 relative to the pressure at the drain port 3 and remains unaffected by back pressure at port 2 up to the valve setting. It can regulate pressure instead of two-port relief valves when there is pressure in the return line. The RSBCLNN model features interchangeable three-port sequence cartridges, ensuring consistent flow paths and cavity compatibility for a given frame size. The valve's main stage orifice is safeguarded by a 150-micron stainless steel screen, and it offers a minimum setting of 75 psi for all spring ranges. Pressure at port 3 adds directly to the valve setting at a 1:1 ratio, with an upper limit of 5000 psi. Notably, this model is not suitable for load-holding applications due to potential spool leakage. Cartridges with EPDM seals are compatible with phosphate ester fluid systems but are vulnerable to petroleum-based substances. Incorporating Sun's floating style construction minimizes risks of internal part binding caused by excessive installation torque or machining variations. The RSBCLNN has a capacity of 7.5 gpm and operates under maximum pressures of up to 5000 psi, with typical response times around 10 milliseconds. Valve leakage is minimal, and adjustments can be made using an internal hex screw and locknut setup designed for precision and ease of use. The model weighs approximately .30 pounds and includes a Viton seal kit option for enhanced durability in various applications.