SUN HYDRAULICS
RVCDWAN

***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 RVCDWAN (RVCDWAN) is a ventable, pilot-operated, balanced piston relief cartridge with an external drain, designed as a normally closed pressure regulating valve. The valve opens to tank port 2 when the inlet port 1 pressure reaches the set threshold, throttling flow to regulate pressure. It features a vent port 3 for remote control by other pilot or two-way valves and a drain port 4 that renders it insensitive to back pressure. This valve boasts accuracy, low-pressure rise versus flow, smooth and quiet operation, and moderate speed. A remote pilot relief on port 3 can control the valve below its own setting. It accepts maximum pressure at port 2, making it suitable for cross-port relief circuits but not for load-holding applications due to spool leakage. The main stage orifice is protected by a 150-micron stainless steel screen. Pressure at port 4 is directly additive to the valve setting at a 1:1 ratio and should not exceed 5000 psi (350 bar). Cartridges with EPDM seals are intended for systems using phosphate ester fluids; exposure to petroleum-based fluids will damage these seals. The valve incorporates Sun's floating style construction to minimize internal part binding from excessive installation torque or cavity/cartridge machining variations. With a capacity of 15 gpm (60 L/min), the factory pressure settings are established at 4 gpm (15 L/min). Maximum operating pressure is rated at 5000 psi (350 bar), with control pilot flow between 7-10 in\u00b3/min (0.11-0.16 L/min) and typical response time of approximately 10 ms. Maximum valve leakage stands at 2 in\u00b3/min under specific conditions, and adjustments can be made using an internal hex screw with detailed specifications provided for installation torque and component sizes.