SUN HYDRAULICS
RBAAJDV

***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 RBAAJDV (RBAAJDV) is a direct-acting, pilot relief cartridge designed to remotely control the pressure setting of other pilot-operated valves. It is ideal for use in load-holding applications and should be employed alongside higher flow valves due to its limited capacity to pilot flow. The valve's main stage orifice is protected by a 150-micron stainless steel screen, enhancing its durability and performance in demanding environments. Notably, any back pressure on the tank port (port 2) is directly additive to the valve setting at a 1:1 ratio. This cartridge valve supports EPDM seals for systems using phosphate ester fluids, but it is crucial to avoid petroleum-based fluids as they can damage these seals. The RBAAJDV model also offers corrosion resistance options with external stainless steel components or zinc-nickel plating, identified by model code suffixes AP or LH respectively. The floating style construction minimizes internal parts binding due to excessive installation torque or machining variations. Key specifications include a cavity size of T-3A, a series 2 capacity of 0.5 gpm (2 L/min), and a maximum operating pressure of 5000 psi (350 bar). The typical response time is approximately 2 milliseconds with maximum valve leakage at 110 SUS (24 cSt) being just 5 drops/minute (0.3 cc/minute). Adjustments are made via an internal hex screw requiring up to five clockwise turns to increase settings, with specific torque requirements for installation and locknut adjustments. The RBAAJDV model weighs approximately 0.50 lb (0.25 kg) and includes a Viton seal kit under part number 990203006. This robust design makes it suitable for various hydraulic applications where precise pressure control is essential.