SUN HYDRAULICS
RSDSKNV

***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 RSDSKNV (RSDSKNV) 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. This valve expertly regulates pressure at port 1 relative to the drain port 3, remaining insensitive to back pressure at port 2 up to its set threshold. It can replace 2-port relief valves in scenarios where return line pressure is present. All three-port sequence cartridges are interchangeable within the same frame size, maintaining consistent flow paths and cavity requirements. As inlet pressure at port 1 rises above the valve setting relative to port 3, pilot flow increases accordingly. The main stage orifice benefits from protection by a 150-micron stainless steel screen, ensuring durability and reliability. The valve's setting is directly influenced by the pressure at port 3 in a 1:1 ratio, with a maximum allowable pressure of 5000 psi (350 bar). Suitable for load holding applications, it offers immunity to cavitation-related issues such as noise and manifold erosion due to its internal modulating mechanism. The valve can handle maximum pressure at port 2, making it ideal for cross-port relief circuits. Sun's floating style construction minimizes risks of internal part binding from excessive installation torque or machining variations in cavity/cartridge setups. With a capacity of 15 gpm (60 L/min), maximum operating pressure of 5000 psi (350 bar), and typical response time of 10 ms, this model ensures efficient performance. It features easy adjustment via five clockwise turns and maintains low leakage rates at reseat with only ten drops per minute (0.7 cc/min). The RSDSKNV model weighs .30 lb (.15 kg) and includes Viton seal kits for optimal sealing performance.