SUN HYDRAULICS
RBADOWN

***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 RBADOWN (Material Number: RBADOWN) is a direct-acting, pilot relief cartridge designed with back-to-back check valves, making it suitable for precise control in hydraulic systems. This component is engineered to remotely manage two other pilot-operated valves or serve as a thermal relief for both ends of an actuator. The valve's capacity is tailored to pilot flow, necessitating its use with other valves of comparable pilot flows. Its design includes back-to-back check valves to prevent cross talk between the controlled valves, and a single adjustment manages both. The valve features a check cracking pressure of 15 psi (1 bar), and pressure at port 3 directly adds to the valve setting, which is advantageous for load-holding applications. The term \"thermal relief\" indicates its role in preventing overpressure due to thermal fluid expansion. The valve incorporates Sun's floating style construction, reducing the risk of internal part binding from excessive installation torque or machining variations in cavity/cartridge configurations. It fits into a T-11A cavity and boasts a series 1 capacity of 0.25 gpm (1 L/min), with typical response times around 2 ms and minimal leakage at 110 SUS (24 cSt) measured at five drops per minute (0.3 cc/min). The adjustment mechanism allows for five clockwise turns to increase settings, while the valve hex size measures 7/8 inches (22.2 mm), requiring installation torque between 30 to 35 lbf ft (41 to 47 Nm). The adjustment screw features an internal hex size of 5/32 inches (4 mm), and the locknut hex size is 9/16 inches (15 mm), with locknut torque rated at 80 to 90 lbf in (9 to 10 Nm). A Viton seal kit is available under part number: 990011006 for maintenance needs.