SUN HYDRAULICS
RVEDWCN

***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 RVEDWCN (RVEDWCN) is a ventable, pilot-operated, balanced piston relief cartridge with an external drain designed for precise pressure regulation. This valve remains closed until the pressure at the inlet port reaches the predetermined setting, at which point it opens to tank port 2 to throttle flow and maintain the desired pressure. It features a vent port that allows for remote control and a drain port that ensures insensitivity to back pressure. These valves are known for their accuracy, low pressure rise versus flow, smooth operation, quiet performance, and moderate speed. The RVEDWCN can handle maximum pressures at port 2 and is suitable for cross-port relief circuits; however, spool leakage should be considered in such applications. The main stage orifice of this valve is protected by a 150-micron stainless steel screen. It is not recommended for load-holding applications due to potential spool leakage. The valve setting can be directly influenced by pressure at port 4 on a 1:1 ratio, with an upper limit of 5000 psi (350 bar). Cartridges with EPDM seals are compatible with phosphate ester fluids but can be damaged by petroleum-based substances. The design incorporates Sun's floating style construction to minimize internal binding risks due to installation torque or machining variations. This model has a capacity of 30 gpm (120 L/min) and operates up to 5000 psi (350 bar). Factory settings are established at a flow rate of 4 gpm (15 L/min), with control pilot flow ranging from 10-15 in\u00b3/min (0.16-0.25 L/min) and typical response time around 10 ms. Maximum valve leakage is specified at 3 in\u00b3/min under certain conditions, while adjustments can be made using internal hex screws or locknuts as detailed in the specifications provided.