SUN HYDRAULICS
RSDSLWN

***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 RSDSLWN (RSDSLWN) is a pilot-operated, balanced poppet 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 and remains unaffected by back pressure at port 2 up to the valve setting. It can be used in place of 2-port relief valves when there's return line pressure and is suitable for load holding applications. The RSDSLWN features interchangeable three-port sequence cartridges with consistent flow paths and cavity sizes within a given frame size. It includes a main stage orifice protected by a 150-micron stainless steel screen, ensuring durability and reliability. The valve's construction minimizes issues related to cavitation such as noise and manifold erosion, thanks to its internal modulating capabilities. The RSDSLWN accepts maximum pressure at port 2, making it ideal for cross-port relief circuits. Its floating style construction reduces risks of internal parts binding due to excessive installation torque or machining variations. With a cavity T-11A Series 1 capacity of 15 gpm (60 L/min) and factory pressure settings established at 4 gpm (15 L/min), this valve operates efficiently under high pressures up to 5000 psi (350 bar). It offers quick response times typically around 10 ms and minimal leakage upon reseat, measured at approximately 10 drops/min (0.7 cc/min). Installation requires specific torque settings: valve hex size is .78 in (22.2 mm) with installation torque between 30 - 35 lbf ft (41 - 47 Nm), while the locknut hex size is .916 in (15 mm) with torque ranging from 80 - 90 lbf in (9 - 10 Nm). The model weighs .30 lb (.15 kg) and comes with Viton seals available through kit number: 990011006.