SUN HYDRAULICS
RSFSLCN

***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 RSFSLCN (RSFSLCN) is a pilot-operated, balanced poppet sequence valve designed to supply a secondary circuit with flow once the inlet port pressure exceeds the valve setting. It is suitable for load holding applications and can be used in place of 2-port relief valves when there is pressure in the return line. The valve's design allows it to be insensitive to back pressure at port 2 up to the valve setting and incorporates Sun's floating style construction to minimize binding issues due to installation torque or machining variations. The main stage orifice is protected by a 150-micron stainless steel screen, ensuring reliability in operation. This model can handle a maximum operating pressure of 5000 psi (350 bar), with factory pressure settings established at a flow rate of 4 gpm (15 L/min). It features a response time of approximately 10 milliseconds and a maximum valve leakage at reseat of 10 drops/min (0.7 cc/min). The RSFSLCN is functionally interchangeable with all other 3-port sequence cartridges from Sun Hydraulics, meaning it shares the same flow path and cavity for its frame size. The adjustment mechanism allows for an increase in setting through five full clockwise turns, utilizing an internal hex size of 5/32 inches (4 mm) for adjustments. It also includes a locknut with a hex size of 9/16 inches (15 mm), which should be torqued between 80-90 lbf\u00b7in (9-10 Nm). The RSFSLCN accepts maximum pressure at port 2, making it suitable for cross-port relief circuits, and its modulating occurs inside the cartridge, preventing issues related to cavitation such as noise and manifold erosion.