SUN HYDRAULICS
RBACOCV

***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 RBACOCV (RBACOCV) is a direct-acting, pilot relief cartridge designed to remotely control the pressure setting of other pilot-operated valves. This cartridge is specifically configured for use with systems that utilize phosphate ester fluids, as it features EPDM seals that are incompatible with petroleum-based substances. The main stage orifice is safeguarded by a 150-micron stainless steel screen, ensuring reliable performance in load-holding applications. Notably, back pressure on the tank port (port 2) directly influences the valve setting at a 1:1 ratio. The RBACOCV model incorporates Sun's floating style construction to prevent internal parts from binding due to excessive installation torque or machining variations. It is corrosion-resistant and can be specified with either stainless steel components (suffix AP) or zinc-nickel plated components (suffix LH). The valve's cavity is T-10A and belongs to Series 1, with a capacity of 0.25 gpm (1 L/min) and a maximum operating pressure of 5000 psi (350 bar). This model features an adjustment range controlled by W and Y controls, allowing for full-range adjustability unless a special setting is specified. Additionally, it has a response time of approximately 2 milliseconds and a maximum valve leakage rate of 5 drops per minute at 110 SUS (24 cSt). The adjustment screw has an internal hex size of 5/32 inches (4 mm), while the locknut hex size measures 9/16 inches (15 mm), with recommended locknut torque ranging between 80-90 lbf-in (9-10 Nm). The cartridge's weight is approximately .30 lb (.15 kg), and it can be fitted with Viton seal kits for enhanced durability.