SUN HYDRAULICS
RBAAKDN

***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 RBAAKDN (RBAAKDN) is a direct-acting, pilot relief cartridge designed for remote control of pressure settings in pilot-operated valves. This product is ideal for applications requiring load holding capabilities, with a main stage orifice shielded by a 150-micron stainless steel screen to ensure durability and reliability. The valve is suitable for use in systems with phosphate ester fluids when equipped with EPDM seals, although exposure to petroleum-based substances should be avoided to prevent seal damage. Additionally, the valve offers corrosion-resistant options identified by model code suffixes AP or LH for external stainless steel or zinc-nickel plated components respectively, making it suitable for corrosive environments. This cartridge valve features Sun\u2019s floating style construction, minimizing the risk of internal part binding due to excessive installation torque or machining variations. It has a capacity of 0.5 gpm (2 L/min) and can withstand a maximum operating pressure of 5000 psi (350 bar). The response time is typically 2 milliseconds with maximum leakage at 110 SUS (24 cSt) being only 5 drops/min (0.3 cc/min). The valve allows adjustment over its full range using controls W or Y unless specified otherwise, with up to five clockwise turns required to increase the setting. Installation requires specific torque values: the valve hex size is 1-1/8 inches (28.6 mm) and should be torqued between 45 - 50 lbf-ft (61 - 68 Nm), while the locknut hex size is 9/16 inches (15 mm) torqued at 80 - 90 lbf-in (9 - 10 Nm). Weighing just 0.50 lb (0.25 kg), it includes a Viton seal kit identified by part number 990203006 for maintenance needs.