SUN HYDRAULICS
RDDAJEV

***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 RDDAJEV (Material Number: RDDAJEV) is a direct-acting relief cartridge valve designed to safeguard hydraulic components from pressure transients. This normally closed, pressure-limiting valve opens to the tank port when the inlet pressure reaches the preset level, effectively throttling flow to control pressure rise. Notably, these valves are characterized by their smooth operation, quiet performance, and essentially zero leakage. They are dirt-tolerant, immune to silting, and exhibit rapid response times. The RDDAJEV model ensures functional interchangeability with other 2-port relief cartridges of the same frame size and flow path. It is capable of handling maximum pressure at port 2 and is suitable for cross-port relief circuits and load-holding applications. The valve's design accommodates adjustments only when system pressure is removed; users must follow a specific procedure for setting adjustments to ensure accuracy and repeatability. The RDDAJEV model incorporates Sun's floating style construction to minimize internal binding due to installation torque or machining variations. It can withstand back pressure on the tank port at a 1:1 ratio with the valve setting. Furthermore, cartridges with EPDM seals are compatible with phosphate ester fluids but can be damaged by petroleum-based substances. The valve demonstrates insensitivity to varying oil temperatures and contamination levels, making it reliable in diverse conditions. With a cavity size of T-10A Series 1 and a capacity of 25 gpm (95 L/min), this cartridge supports maximum operating pressures up to 5000 psi (350 bar) with typical response times of about 2 ms. The valve's reseat capability is set at 90% of its setting, ensuring dependable performance in dynamic hydraulic systems.