SUN HYDRAULICS
RVEDCEN

***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 RVEDCEN (RVEDCEN) is a ventable, pilot-operated, balanced piston relief cartridge featuring an external drain, designed to function as a normally closed pressure regulating valve. It begins to open at the inlet port 1 when the pressure reaches the set point, allowing flow throttling to tank port 2 to regulate pressure. This model incorporates a vent port 3 for remote control via other pilot or two-way valves and a drain port 4, ensuring insensitivity to back pressure. The RVEDCEN is recognized for its accuracy, low-pressure rise versus flow characteristics, smooth operation, quiet performance, and moderate response speed. It 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 is protected by a 150-micron stainless steel screen. This valve is not recommended for load-holding applications due to potential spool leakage. The cartridge features EPDM seals compatible with phosphate ester fluids but are susceptible to damage from petroleum-based substances. Pressure at port 4 directly adds to the valve setting at a 1:1 ratio with a maximum limit of 5000 psi (350 bar). The RVEDCEN can be adjusted across its full range using W or Y controls unless specified otherwise with a special setting. It utilizes Sun's floating style construction to minimize internal binding risks due to installation torque or machining variations. This model fits into cavity T-22A and belongs to Series 2 with a capacity of up to 30 gpm (120 L/min). Factory settings are established at 4 gpm (15 L/min), with operating pressures reaching up to 5000 psi (350 bar). Control pilot flow ranges between 10-15 in\u00b3/min (0.16-0.25 L/min), and typical response time clocks in at approximately 10 ms. Maximum valve leakage is rated at three in\u00b3/min under specified conditions.