SUN HYDRAULICS
RSJSLNN

***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 RSJSLNN (RSJSLNN) is a pilot-operated, balanced poppet sequence valve designed to supply a secondary circuit with flow once the pressure at inlet port 1 exceeds the valve setting. It regulates pressure at port 1 relative to the drain port 3 and remains unaffected by back pressure at port 2 up to the valve setting, making it suitable for use in cross-port relief circuits. These valves can replace two-port relief valves if there's pressure in the return line and are interchangeable with other three-port sequence cartridges of the same frame size. The valve incorporates Sun's floating style construction, minimizing binding issues due to excessive installation torque or machining variations. It features a main stage orifice protected by a 150-micron stainless steel screen and can handle pressures up to 5000 psi (350 bar) at port 3, which adds directly to the valve setting at a 1:1 ratio. The RSJSLNN has a capacity of 120 gpm (480 L/min) and operates optimally at factory pressure settings established at 4 gpm (15 L/min). Its control pilot flow ranges between 15-20 in\u00b3/min (0.25-0.33 L/min), with typical response times around 2 milliseconds. The maximum valve leakage upon reseat is limited to 10 drops/min (0.7 cc/min). Adjustment is achieved through clockwise turns, requiring approximately five turns for increasing settings, while installation demands torque between 350-375 lbf ft (474-508 Nm). The adjustment screw has an internal hex size of 5/32 in. (4 mm) with a locknut hex size of 9/16 in. (15 mm), torqued between 80-90 lbf in. (9-10 Nm). The model weighs approximately 3.10 lb (1.40 kg) and uses Viton seal kits for cartridge sealing needs, ensuring robust performance across various applications where precise sequence control is required without cavitation issues like noise or manifold erosion.