SUN HYDRAULICS
RBACOBV

***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 RBACOBV (RBACOBV) is a direct-acting, pilot relief cartridge designed to remotely control the pressure setting of other pilot-operated valves. This valve is suitable for use in load-holding applications and should be paired with higher flow valves due to its limited capacity for pilot flow. The RBACOBV features a main stage orifice protected by a 150-micron stainless steel screen and is available with EPDM seals, making it ideal for systems using phosphate ester fluids while unsuitable for petroleum-based fluids. It incorporates Sun's floating style construction to minimize internal part binding from excessive installation torque or cavity-cartridge machining variations. This model can be configured with corrosion-resistant components, identified by the suffix AP for external stainless steel or LH for zinc-nickel plating. The valve operates at a maximum pressure of 5000 psi (350 bar) with a capacity of 0.25 gpm (1 L/min). It offers fast response times, typically around 2 ms, and minimal leakage at maximum conditions. Adjustment is made via an internal hex screw, with options for W and Y controls allowing full-range adjustability unless specified otherwise. The RBACOBV's design includes features such as back pressure on the tank port being directly additive to the valve setting at a 1:1 ratio. The valve's compact size allows easy installation with specific torque requirements: 30-35 lbf ft (41-47 Nm) for installation and 80-90 lbf in (9-10 Nm) for the locknut. This robust component weighs approximately .30 lb (.15 kg) and comes with a Viton seal kit option (990010006), ensuring reliable performance in various applications requiring precise pressure control.