SUN HYDRAULICS
RSBCLBV

***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 RSBCLBV (RSBCLBV) is a pilot-operated, balanced piston sequence valve designed to supply a secondary circuit with flow once the inlet pressure at port 1 exceeds the valve setting. This valve effectively controls the pressure at port 1 relative to the drain port 3 and remains insensitive to back pressure at port 2 up to its set value. It can be used in place of two-port relief valves when there is return line pressure. All three-port sequence cartridges share physical and functional interchangeability, offering consistent flow paths and cavity compatibility for a given frame size. The valve's pilot flow increases as the inlet pressure rises above the set value, with a main stage orifice protected by a 150-micron stainless steel screen. The minimum setting for all spring ranges is 75 psi (5 bar), with maximum pressures not exceeding 5000 psi (350 bar). The valve is not suitable for load-holding applications due to spool leakage. Cartridges configured with EPDM seals are intended for phosphate ester fluid systems, as exposure to petroleum-based fluids can damage these seals. The Sun floating style construction minimizes internal part binding risks due to excessive installation torque or cavity machining variations. It features a Cavity T-163A, Series 0, with a capacity of 7.5 gpm (30 L/min) and factory pressure settings established at 4 gpm (15 L/min). It operates at a maximum pressure of 5000 psi (350 bar), with a typical response time of 10 ms and maximum valve leakage of approximately 30 cc/min at specific conditions. The adjustment mechanism includes five clockwise turns to increase settings, while installation requires specific torque values for both the valve and locknut components. The model weighs approximately .30 lb (.15 kg).