SUN HYDRAULICS
RDJAQCN

***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 RDJAQCN (RDJAQCN) is a direct-acting relief cartridge designed to protect hydraulic components from pressure transients by limiting pressure rise through throttling flow. It operates by opening to the tank port when inlet port pressure reaches the valve setting, ensuring smooth, quiet performance with essentially zero leakage. This valve is dirt tolerant, immune to silting, and offers rapid response times of approximately 2 milliseconds. With a maximum operating pressure of 5000 psi (350 bar) and a capacity of 200 gpm (760 L/min), it is suitable for cross-port relief circuits and load-holding applications. The RDJAQCN features interchangeable 2-port relief cartridges, making it functionally compatible with similar frame sizes. It can handle maximum pressure at port 2 and accepts backpressure on the tank port, directly additive to the valve setting at a 1:1 ratio. The valve's adjustment mechanism involves checking and removing system pressure before adjusting, ensuring precise settings. It is less sensitive to varying oil temperatures and contamination. This model incorporates Sun's floating style construction to minimize binding due to installation torque or machining variations. It includes EPDM seals for compatibility with phosphate ester fluids, although exposure to petroleum-based fluids can damage these seals. The valve requires specific torque values for installation and adjustment components: installation torque ranges from 350 - 375 lbf ft (474 - 508 Nm), while locknut torque ranges from 80 - 90 lbf in (9 - 10 Nm). Overall, the Sun Hydraulics RDJAQCN provides reliable protection against overpressure conditions in hydraulic systems, offering robust performance across various operating environments with its innovative design features and high-quality construction.