SUN HYDRAULICS
RVEACWN

***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 RVEACWN (RVEACWN) is a ventable, pilot-operated, balanced piston relief cartridge designed as a normally closed pressure regulating valve. When the pressure at inlet port 1 reaches the set valve threshold, it begins to open to tank port 2, modulating flow to maintain regulated pressure. This model features a vent port 3 that interfaces between the main piston and pilot stage, allowing remote control via other pilot or 2-way valves. Notable for its accuracy and smooth operation, this valve exhibits low pressure rise relative to flow and offers moderate speed. The RVEACWN can be controlled below its setting using a remote pilot relief on port 3 vent. This cartridge is suitable for cross-port relief circuits but requires consideration of spool leakage in such applications. It can handle maximum pressure at port 2 but is not recommended for load-holding applications due to potential leakage. The main stage orifice is protected by a 150-micron stainless steel screen, and back pressure on tank port 2 adds directly to the valve setting at a 1:1 ratio. Configurations with EPDM seals are intended for systems utilizing phosphate ester fluids; exposure to petroleum-based fluids will damage these seals. Incorporating Sun's floating style construction minimizes the risk of internal parts binding from excessive installation torque or machining variations in cavity/cartridge interfaces. With a capacity of up to 30 gpm (120 L/min) and maximum operating pressure of 5000 psi (350 bar), this valve is built for demanding scenarios. It provides response times typically around 10 ms and has minimal leakage under specified conditions. The adjustment mechanism allows for precise control with up to five turns needed to increase settings, complemented by robust installation specifications ensuring reliable performance in various hydraulic systems.