SUN HYDRAULICS
RDDAWCV

***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 RDDAWCV (Material Number: RDDAWCV) is a direct-acting relief cartridge valve designed to safeguard hydraulic components from pressure transients. This valve remains normally closed until the pressure at inlet port 1 reaches the set threshold, at which point it opens to tank port 2, regulating flow to maintain controlled pressure levels. Notable for its smooth operation and quiet performance, this valve exhibits nearly zero leakage and is highly resistant to dirt, making it both robust and reliable. All 2-port relief cartridges from Sun Hydraulics are interchangeable within the same frame size, offering functional consistency across various applications. The RDDAWCV can handle maximum pressure at port 2, making it suitable for cross-port relief circuits. It features an adjustment screw seal exposed to system pressure, requiring pressure removal before adjustments can be made. The valve's design ensures minimal sensitivity to oil temperature variations and contamination, enhancing its reliability in diverse conditions. For optimal repeatability, select a spring range where the desired setting falls between midrange and maximum pressure. This valve is ideal for load-holding applications, with backpressure on tank port 2 directly affecting the valve setting at a 1:1 ratio. EPDM-sealed cartridges are compatible with phosphate ester fluids but are not suitable for petroleum-based substances. The floating style construction minimizes risks of internal binding due to installation torque or machining variations. Key specifications include a T-10A cavity size with a series 1 capacity of up to 25 gpm (95 L/min) and a maximum operating pressure of 5000 psi (350 bar). It features a typical response time of 2 ms and maximum leakage at reseat of 10 drops/min (0.7 cc/min). The valve's reseat occurs at approximately 90% of the set value.