SUN HYDRAULICS
RSBCLCV

***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 RSBCLCV (RSBCLCV) is a pilot-operated, balanced piston sequence valve designed to provide a secondary circuit with flow once the inlet port pressure exceeds the valve setting. It regulates pressure at port 1 relative to the drain port 3 and remains unaffected by back pressure at port 2 up to the valve setting. This valve can substitute for 2-port relief valves if there is return line pressure. All three-port sequence cartridges are interchangeable, maintaining consistent flow paths and cavity sizes across frames. The pilot flow increases as the inlet pressure at port 1 surpasses the valve setting relative to port 3's drain pressure. The main stage orifice is safeguarded by a 150-micron stainless steel screen, and the minimum setting for all spring ranges is 75 psi (5 bar). The maximum operating pressure is 5000 psi (350 bar), with a typical response time of 10 ms and maximum leakage of 2 in\u00b3/min (30 cc/min) at 110 SUS (24 cSt). This model features Sun's floating style construction, minimizing internal part binding due to installation torque or machining variations. It is not suitable for load-holding applications because of spool leakage. Cartridges with EPDM seals are intended for phosphate ester fluid systems; petroleum-based fluids will damage these seals. The valve has a capacity of 7.5 gpm (30 L/min) and comes with specific installation requirements: adjustment via an internal hex screw, locknut torque specifications, and installation torque between 20-25 lbf-ft (27-33 Nm). It weighs .30 lb (.15 kg) and uses Viton seal kit number 990163006 for maintenance or replacement needs.