SUN HYDRAULICS
RVEAQHN

***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 RVEAQHN (RVEAQHN) is a ventable, pilot-operated, balanced piston relief cartridge designed for precise pressure regulation in hydraulic systems. This normally closed pressure regulating valve opens to the tank port when the inlet pressure reaches the set threshold, effectively throttling flow to maintain desired pressure levels. It includes a vent port that allows for remote control by other pilot or two-way valves, enhancing its versatility in complex hydraulic circuits. With a capacity of 30 gpm (120 L/min) and maximum operating pressure of 5000 psi (350 bar), this valve is suitable for high-pressure applications. The valve's construction ensures accuracy and low pressure rise versus flow, providing smooth and quiet operation with moderate response speed. Key features include a main stage orifice protected by a 150-micron stainless steel screen and compatibility with EPDM seals for systems using phosphate ester fluids. However, it is not suitable for load-holding applications due to spool leakage considerations. The design incorporates Sun's floating style construction to minimize binding risks during installation or due to machining variations. This valve can handle maximum pressure at port 2, making it apt for cross-port relief circuits while accounting for potential spool leakage. Backpressure on the tank port directly adds to the valve setting in a 1:1 ratio. The RVEAQHN requires specific installation torque values and includes an internal hex adjustment screw for setting adjustments. Its compact design features a locknut with precise torque specifications, ensuring secure installation and reliable performance in demanding environments.