SUN HYDRAULICS
RBAAYEV

***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 RBAAYEV (RBAAYEV) is a direct-acting, pilot relief cartridge valve designed to remotely control the pressure setting of other pilot-operated valves. This valve is ideal for applications requiring load holding, given its suitability for use in such scenarios. The main stage orifice is protected by a 150-micron stainless steel screen, ensuring durability and reliability in operation. It is important to note that the back pressure on port 2 of the tank is directly additive to the valve setting at a 1:1 ratio. For systems utilizing phosphate ester fluids, cartridges with EPDM seals are recommended; exposure to petroleum-based fluids will damage these seals. The RBAAYEV model incorporates Sun's floating style construction, which minimizes the risk of internal parts binding due to excessive installation torque or variations in cavity/cartridge machining. It offers a capacity of 0.5 gpm (2 L/min) and can operate at a maximum pressure of 5000 psi (350 bar). The response time is typically 2 milliseconds, and the maximum valve leakage at 110 SUS (24 cSt) is limited to 5 drops per minute (0.3 cc/min). Adjustment features include five clockwise turns to increase settings, with an internal hex size of 5/32 inches (4 mm) for the adjustment screw and a locknut hex size of 9/16 inches (15 mm). The valve's installation torque ranges from 45 to 50 lbf ft (61 to 68 Nm), while the locknut torque ranges from 80 to 90 lbf in (9 to 10 Nm). Weighing approximately .50 lb (.25 kg), this model is compatible with Viton seal kits (990203006) for enhanced performance under various conditions.