SUN HYDRAULICS
RBACFEN

***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 RBACFEN (Material Number RBACFEN) is a direct-acting, pilot relief cartridge designed primarily for remote pressure control in conjunction with other pilot-operated valves, where its capacity is limited to pilot flow. This cartridge valve is suitable for load holding applications and features EPDM seals, making it compatible with systems utilizing phosphate ester fluids. It is important to note that exposure to petroleum-based fluids may damage the seals. The main stage orifice comes protected with a 150-micron stainless steel screen to ensure durability and performance reliability. This model incorporates Sun's floating style construction, which minimizes the chance of internal component binding due to excessive installation torque or machining variations within the cavity or cartridge. It also has a maximum operating pressure of 5000 psi (350 bar) and can handle a flow capacity of up to 0.25 gpm (1 L/min). The valve's response time is typically around 2 milliseconds, and it features minimal leakage rates at maximum conditions. The RBACFEN model offers flexibility in its adjustment capabilities through W and Y controls, which can be specified with or without a special setting. If no special setting is indicated, users can adjust the valve throughout its complete range using these controls. Corrosion resistance options are available for use in harsh environments, identified by suffixes AP for stainless steel components or LH for zinc-nickel plated components. Installation requirements include specific torque values: valve installation torque ranges from 30 to 35 lbf\u00b7ft (41 to 47 Nm), while locknut torque is between 80 and 90 lbf\u00b7in (9 to 10 Nm). The valve hex size measures at 7/8 inch (22.2 mm), ensuring compatibility with standard tooling setups in hydraulic systems.