SUN HYDRAULICS
RSBCLWV

***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 RSBCLWV (RSBCLWV) 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 regulates pressure at port 1 relative to the drain port 3, remaining insensitive to back pressure at port 2 up to the valve setting. It can serve as a replacement for two-port relief valves when there is return line pressure. All three-port sequence cartridges are interchangeable within the same frame size, offering consistent flow paths and cavity compatibility. The valve features a main stage orifice protected by a 150-micron stainless steel screen and has a minimum pressure setting of 75 psi (5 bar). Pressure at port 3 adds directly to the valve setting at a 1:1 ratio, with an upper limit of 5000 psi (350 bar). Notably, these valves are unsuitable for load-holding applications due to spool leakage. Cartridges configured with EPDM seals are intended for systems using phosphate ester fluids, as exposure to petroleum-based substances can damage these seals. The Sun floating style construction minimizes internal part binding risks from excessive installation torque or machining variations. The RSBCLWV model has a cavity T-163A series and offers a capacity of 7.5 gpm (30 L/min) with factory pressure settings established at 4 gpm (15 L/min). It operates at maximum pressures of up to 5000 psi (350 bar) with typical response times of around 10 ms and maximum leakage rates of approximately 2 in\u00b3/min (30 cc/min). The adjustment mechanism allows for five clockwise turns to increase settings, featuring specific installation torque requirements and hex sizes for both the valve and locknut components.