SUN HYDRAULICS
RSBCCWV

***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 RSBCCWV (RSBCCWV) is a pilot-operated, balanced piston sequence valve designed to supply a secondary circuit with flow once the inlet port pressure exceeds the valve setting. This valve controls the pressure at port 1 relative to the drain port 3 and is insensitive to back pressure at port 2 up to the valve setting. It can regulate pressure in place of 2-port relief valves when there is return line pressure. The RSBCCWV model features interchangeable 3-port sequence cartridges, ensuring consistent flow paths and cavity compatibility for a given frame size. As inlet pressure at port 1 increases relative to drain pressure at port 3, pilot flow continues to rise above the valve setting. The main stage orifice is protected by a robust 150-micron stainless steel screen, and all spring ranges have a minimum setting of 75 psi (5 bar). The maximum allowable pressure at port 3 should not exceed 5000 psi (350 bar), as it directly adds to the valve setting on a 1:1 ratio. However, this model is not suitable for load-holding applications due to spool leakage. Cartridges configured with EPDM seals are intended for systems using phosphate ester fluids, as petroleum-based fluids will damage these seals. It incorporates Sun's floating style construction, reducing potential internal part binding from excessive installation torque or machining variations. The RSBCCWV has a capacity of 7.5 gpm (30 L/min) and operates up to a maximum pressure of 5000 psi (350 bar), with typical response times around 10 ms and minimal leakage rates at specified viscosities. Installation requires specific torques for components like the locknut and adjustment screw, ensuring proper functionality within hydraulic systems designed for sequencing operations.