SUN HYDRAULICS
RBADKEN

***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 RBADKEN (RBADKEN) is a direct-acting, pilot relief cartridge featuring back-to-back check valves, designed to remotely control two other pilot-operated valves or serve as a thermal relief for both ends of an actuator. This valve is specifically engineered for applications where capacity is limited to pilot flow, and it should be used in conjunction with other valves with similar pilot flows. The integrated back-to-back check valves prevent cross communication between the controlled valves, while a single adjustment manages both valves. With a check cracking pressure of 15 psi (1 bar), pressure at port 3 directly adds to the valve setting, making it suitable for load-holding applications. The term \"thermal relief\" refers to its ability to prevent overpressure due to fluid thermal expansion. The RBADKEN incorporates Sun's floating style construction, which minimizes the potential for internal part binding caused by excessive installation torque or cavity/cartridge machining variations. It fits into a Cavity T-11A Series 1 and has a capacity of 0.25 gpm (1 L/min). The typical response time is approximately 2 ms, with maximum valve leakage at 110 SUS (24 cSt) being 5 drops/min (0.3 cc/min). Adjustments are made via an internal hex screw, requiring five clockwise turns to increase the setting. Installation requires a valve hex size of 7/8 in (22.2 mm), with torque specifications of 30-35 lbf ft (41-47 Nm). The adjustment screw uses a 5/32 in (4 mm) internal hex size and the locknut requires a torque setting of 80-90 lbf in (9-10 Nm). A Viton seal kit is available under part number 990011006. This versatile cartridge can be employed in various hydraulic systems requiring precise relief control and protection against overpressure scenarios due to thermal expansion, making it an essential component for maintaining system integrity and performance.