SUN HYDRAULICS
RBAAKBV

***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 RBAAKBV (RBAAKBV) is a direct-acting, pilot relief cartridge valve designed to remotely control the pressure setting of other pilot-operated valves. It is specifically intended for use in load holding applications where capacity is limited to pilot flow, necessitating its use alongside higher flow valves. The main stage orifice is protected by a 150-micron stainless steel screen, ensuring durability and reliability. Notably, the valve\u2019s back pressure on the tank port (port 2) directly adds to the valve setting at a 1:1 ratio. Cartridges with EPDM seals are compatible with systems using phosphate ester fluids, but exposure to petroleum-based fluids can damage these seals. The RBAAKBV model incorporates Sun's floating style construction to minimize internal part binding due to excessive installation torque or machining variations. It features corrosion-resistant components, identified by model code suffixes AP for stainless steel or LH for zinc-nickel plating. The cartridge has a capacity of 0.5 gpm (2 L/min) and can operate at a maximum pressure of 5000 psi (350 bar), with a typical response time of 2 milliseconds. This valve allows adjustment throughout its full range using W or Y controls unless specified otherwise for special settings, which represent the maximum setting of the valve. With a maximum leakage rate of 5 drops/minute at 110 SUS (24 cSt), it ensures efficient operation. Installation requires specific torque settings: valve installation torque ranges from 45 to 50 lbf\u00b7ft (61 to 68 Nm), and locknut torque ranges from 80 to 90 lbf\u00b7in (9 to 10 Nm). The cartridge's compact design includes an internal hex size for adjustment screws at 5/32 inches and locknut hex size at 9/16 inches. This robust design makes it suitable for various demanding applications requiring precise pressure control and reliability in corrosive environments.