SUN HYDRAULICS
RBACLDE

***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 RBACLDE (Material Number: RBACLDE) is a direct-acting, pilot relief cartridge designed to remotely control the pressure setting of other pilot-operated valves. This cartridge valve is intended for use in systems where capacity is limited to pilot flow, necessitating its use with higher flow valves. It incorporates EPDM seals, making it suitable for systems with phosphate ester fluids while being unsuitable for petroleum-based fluids. The main stage orifice is protected by a 150-micron stainless steel screen, enhancing durability and reliability in load-holding applications. Notably, the back pressure on tank port 2 adds directly to the valve setting at a 1:1 ratio. The RBACLDE model features corrosion-resistant construction options identified by suffixes AP for stainless steel components or LH for zinc-nickel plated components. This ensures suitability in corrosive environments. The floating style construction minimizes internal part binding due to excessive installation torque or cavity-cartridge machining variations. With a cavity size of T-10A Series 1 and a capacity of 0.25 gpm (1 L/min), this valve operates at a maximum pressure of 5000 psi (350 bar) with a typical response time of 2 ms. It exhibits minimal leakage, with maximum valve leakage at 110 SUS (24 cSt) being only 5 drops/min (0.3 cc/min). The adjustment mechanism allows up to five clockwise turns to increase the setting and includes specific hex sizes for installation and adjustment procedures. This cartridge valve is ideal for applications requiring quick response and stability, such as preventing overpressure in hydraulic systems. Its robust design makes it an excellent choice when direct-acting relief valves are preferred over pilot-operated options due to their speed and dirt tolerance.