SUN HYDRAULICS
RSFSLQV

***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 RSFSLQV (RSFSLQV) is a pilot-operated, balanced poppet sequence valve designed to supply a secondary circuit with flow once the inlet pressure at port 1 exceeds the valve setting. This valve expertly controls the pressure at port 1 in relation to the pressure at drain port 3 and remains unaffected by back pressure at port 2 up to the valve setting. It can regulate pressure in place of two-port relief valves when there is return line pressure and is suitable for load-holding applications. The RSFSLQV features interchangeable three-port sequence cartridges, ensuring consistent flow paths and cavity compatibility within a given frame size. The main stage orifice is safeguarded by a 150-micron stainless steel screen, and the maximum allowable pressure at port 3 should not surpass 5000 psi (350 bar). Notably, this model incorporates Sun's floating style construction to reduce internal binding risks due to excessive installation torque or machining variations. It allows maximum pressure at port 2, making it ideal for cross-port relief circuits. The valve's modulating action occurs within the cartridge, rendering it resistant to cavitation issues like noise and manifold erosion. With a capacity of 30 gpm (120 L/min), factory settings established at 4 gpm (15 L/min), and a response time of approximately 10 ms, this model ensures efficient performance under high-pressure conditions up to its maximum operating limit of 5000 psi (350 bar). The RSFSLQV also boasts minimal leakage rates upon reseating, with adjustments facilitated through an internal hex screw and locknut configuration.