SUN HYDRAULICS
RVCDCEV

***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 RVCDCEV (RVCDCEV) is a ventable, pilot-operated, balanced piston relief cartridge designed for precise pressure regulation. This normally closed valve begins to open when the inlet port 1 reaches the preset pressure, allowing flow to the tank port 2 and regulating system pressure. It features a vent port 3 for remote control and a drain port 4 that ensures insensitivity to back pressure. Known for its accuracy and smooth operation, it exhibits low pressure rise versus flow characteristics and moderate response speed. The valve can handle maximum pressures 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 safeguarded by a 150-micron stainless steel screen. This model is not recommended for load holding applications due to potential spool leakage. The pressure at port 4 directly affects the valve setting on a one-to-one basis and should not exceed 5000 psi (350 bar). When configured with EPDM seals, the cartridge is compatible with systems using phosphate ester fluids but should avoid contact with petroleum-based substances. The valve offers adjustable settings throughout its range via W or Y controls unless specified otherwise. Sun's floating style construction minimizes binding risks from installation torque or machining variations. The RVCDCEV fits into cavity T-21A with a series 1 capacity of up to 15 gpm (60 L/min). Factory settings are established at a flow of 4 gpm (15 L/min), with maximum operating pressure reaching up to 5000 psi (350 bar). Control pilot flow ranges between 7-10 in\u00b3/min (0.11-0.16 L/min), and typical response time is around 10 ms. Maximum leakage at standard conditions is approximately 2 in\u00b3/min (30 cc/min). Installation requires specific torques for optimal performance: valve torque of 30-35 lbf ft (41-47 Nm) and locknut torque of 80-90 lbf in (9-10 Nm).