SUN HYDRAULICS
RBAAOEV

***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 RBAAOEV (RBAAOEV) is a direct-acting, pilot relief cartridge designed to remotely control the pressure setting of other pilot-operated valves. This cartridge is intended for use in load holding applications and is especially suitable when paired with higher flow valves due to its limited capacity to pilot flow. It features a main stage orifice protected by a 150-micron stainless steel screen, ensuring durability and reliability in demanding environments. The valve's setting can be directly influenced by back pressure on the tank port, with a 1:1 ratio addition. For systems utilizing phosphate ester fluids, cartridges configured with EPDM seals are recommended; however, these seals are not compatible with petroleum-based fluids and lubricants. The RBAAOEV model incorporates Sun's floating style construction to minimize internal binding due to excessive installation torque or machining variations. This corrosion-resistant cartridge valve can be identified by specific model code suffixes for external stainless steel or zinc-nickel plated components, making it suitable for corrosive environments. It is capable of handling a maximum operating pressure of 5000 psi (350 bar) with a typical response time of 2 ms. The valve has a leakage rate of up to 5 drops/min at 110 SUS (24 cSt), ensuring efficient performance. For installation, the valve requires a hex size of 1 1/8 inches (28.6 mm) and should be torqued between 45-50 lbf ft (61-68 Nm). The adjustment screw features an internal hex size of 5/32 inches (4 mm), while the locknut has a hex size of 9/16 inches (15 mm) and should be torqued between 80-90 lbf in (9-10 Nm). The model weighs approximately .50 lb (.25 kg), and its Viton seal kit can be ordered under part number 990203006.