SUN HYDRAULICS
RVEALBN

***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 RVEALBN (Material Number: RVEALBN) is a ventable, pilot-operated, balanced piston relief cartridge designed for precise pressure regulation. This valve is normally closed and begins to open to the tank port when the inlet pressure reaches its set point, allowing throttling of flow to maintain desired pressure levels. It features a vent port that facilitates remote control via other pilot or two-way valves. Known for its accuracy and smooth operation, the valve exhibits low pressure rise relative to flow and responds moderately fast. It accepts maximum pressure at port 2, making it suitable for cross-port relief circuits, though spool leakage should be considered in such applications. The main stage orifice is protected by a 150-micron stainless steel screen, enhancing durability and performance reliability. However, due to potential spool leakage, this valve is not recommended for load-holding applications. The backpressure on the tank port directly adds to the valve setting at a 1:1 ratio. Cartridges equipped with EPDM seals are intended for systems using phosphate ester fluids; exposure to petroleum-based fluids can damage these seals. Incorporating Sun's floating style construction minimizes internal part binding due to excessive installation torque or machining variations. The RVEALBN has a capacity of 30 gpm (120 L/min) and operates at a maximum pressure of 5000 psi (350 bar). It features an adjustable setting mechanism with up to five clockwise turns and includes specific torque requirements for installation and adjustment components. This model weighs .70 lb (.30 kg) and requires Viton seal kit 990202006 for maintenance or replacement purposes.