SUN HYDRAULICS
RSBCLQN

***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 RSBCLQN (RSBCLQN) 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 pressure at drain port 3, remaining insensitive to back pressure at port 2 up to the valve setting. It can regulate pressure in place of 2-port relief valves if there is pressure in the return line. The RSBCLQN model features interchangeable three-port sequence cartridges, which share the same flow path and cavity for a given frame size. As inlet pressure at port 1 rises above the valve setting relative to drain port 3, pilot flow increases. The main stage orifice is protected by a robust 150-micron stainless steel screen. This sequence valve has a minimum setting of 75 psi (5 bar) for all spring ranges, with maximum operating pressures reaching up to 5000 psi (350 bar). With a typical response time of just 10 milliseconds and maximum valve leakage at 110 SUS (24 cSt) rated at 2 in/min (30 cc/min), it is engineered for efficiency and precision. However, it is not suitable for load-holding applications due to spool leakage. The RSBCLQN is compatible with systems using phosphate ester fluids when equipped with EPDM seals; exposure to petroleum-based substances will damage these seals. The Sun Hydraulics RSBCLQN incorporates floating style construction to minimize internal binding from excessive torque or machining variations during installation. It fits into Cavity T-163A and has a capacity of 7.5 gpm (30 L/min). Factory pressure settings are established at a flow rate of 4 gpm (15 L/min). The model weighs .30 lb (.15 kg) and comes with an adjustment screw internal hex size of 5/32 in. (4 mm), locknut hex size of 9/16 in. (15 mm), and requires specific installation torques for optimal performance.