SUN HYDRAULICS
RBACFDN

***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 RBACFDN (Material Number: RBACFDN) is a direct-acting, pilot relief cartridge valve designed for controlling pressure settings in hydraulic systems. It is particularly useful for load holding applications and should be used in conjunction with higher flow valves due to its limited capacity to pilot flow. The valve features EPDM seals, making it suitable for systems using phosphate ester fluids, while exposure to petroleum-based fluids can damage these seals. The main stage orifice is safeguarded by a 150-micron stainless steel screen, ensuring durability and reliability. This cartridge valve incorporates Sun's floating style construction, which minimizes the risk of internal parts binding due to excessive installation torque or machining variations. It operates within a cavity-T10A series 1 and has a capacity of 0.25 gpm (1 L/min), with a maximum operating pressure of 5000 psi (350 bar). The typical response time is 2 ms, and it has minimal leakage at maximum conditions. The RBACFDN model allows adjustment throughout its full range using W or Y controls unless specified otherwise for special settings. For environments prone to corrosion, the valve offers options with external stainless steel components (suffix AP) or zinc-nickel plated components (suffix LH). Installation requires specific torque values: the valve hex size is 7/8 inch (22.2 mm), requiring an installation torque of 30-35 lbf ft (41-47 Nm), while the locknut hex size is 9/16 inch (15 mm) with a torque requirement of 80-90 lbf in (9-10 Nm). This product\u2019s robust design ensures fast operation and stability in various applications where precise pressure control is crucial.