SUN HYDRAULICS
RSBCLQV

***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 RSBCLQV (RSBCLQV) is a pilot-operated, balanced piston sequence valve designed to supply a secondary circuit with flow once the pressure at the inlet port 1 exceeds the valve setting. This valve 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 point. It can be used as an alternative to two-port relief valves in systems where there is pressure in the return line. The RSBCLQV is built with interchangeable three-port sequence cartridges, featuring a protected main stage orifice with a 150-micron stainless steel screen. It has a minimum setting of 75 psi (5 bar) for all spring ranges and can handle pressures up to 5000 psi (350 bar). However, it is not suitable for load holding applications due to spool leakage. The cartridge's EPDM seals are intended for use with phosphate ester fluids only, as exposure to petroleum-based substances will damage them. The valve incorporates Sun's floating style construction to reduce internal binding risks from excessive installation torque or machining variations. With a capacity of 7.5 gpm (30 L/min), it has factory pressure settings established at 4 gpm (15 L/min) and demonstrates a typical response time of around 10 ms. Maximum leakage is rated at 2 in\u00b3/min (30 cc/min) at an oil viscosity of 110 SUS (24 cSt). Adjustment features include five clockwise turns for increasing settings, with specific torque requirements for installation and locknut adjustments. The model weighs approximately .30 lb (.15 kg) and uses Viton seal kit number 990163006.