SUN HYDRAULICS
RBACCWN

***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 RBACCWN (RBACCWN) is a direct-acting pilot relief cartridge designed for remote pressure control in hydraulic systems. This model is ideal for applications requiring load holding and is most effective when used alongside higher flow valves due to its limited capacity to pilot flow. The cartridge features EPDM seals, making it suitable for systems utilizing phosphate ester fluids, while being incompatible with petroleum-based fluids. A 150-micron stainless steel screen protects the main stage orifice, ensuring durability and reliability even in corrosive environments. The valve allows for back pressure on the tank port to be added directly to the valve setting at a 1:1 ratio. This model includes W and Y controls that can be adjusted throughout their range unless specified otherwise with a special setting. It incorporates Sun's floating style construction, reducing the risk of internal part binding from excessive installation torque or variations in cavity machining. With a capacity of 0.25 gpm (1 L/min) and a maximum operating pressure of 5000 psi (350 bar), this cartridge offers fast response times typically around 2 ms and minimal valve leakage at 5 drops/min (0.3 cc/min). Installation requires a torque of 30-35 lbf ft (41-47 Nm), with adjustment possible through an internal hex screw of size 5/32 in. (4 mm). Locknut adjustments are also supported with a hex size of 9/16 in. (15 mm) and torque specifications between 80-90 lbf in. (9-10 Nm). Weighing just .30 lb (.15 kg), this compact yet robust valve is an excellent choice for precise pressure control applications where corrosion resistance and reliability are paramount.