SUN HYDRAULICS
RVISCNV

***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 RVISCNV (RVISCNV) is a ventable, pilot-operated, balanced poppet relief cartridge designed for precise pressure regulation and control. This normally closed valve begins to open when the inlet port pressure reaches the pre-set level, allowing flow to the tank port to maintain desired pressure levels. It features a vent port that facilitates remote control through additional pilot or 2-way valves. Known for its accuracy and low-pressure rise versus flow characteristics, the RVISCNV operates smoothly and quietly with moderate speed. The internal modulation of this valve makes it resistant to cavitation issues such as noise and manifold erosion. This cartridge is suitable for load-holding applications, provided any valving on the vent port is zero-leak. It can handle maximum pressure at port 2, making it ideal for cross-port relief circuits. A remote pilot relief on the vent port can control the valve below its set point. The design ensures insensitivity to varying oil temperatures and contamination, with a main stage orifice protected by a 150-micron stainless steel screen. The back pressure at the tank port directly adds to the valve setting at a 1:1 ratio. Constructed with Sun's floating style design, it minimizes binding risks due to installation torque or machining variations in cavities/cartridges. It has a capacity of 120 gpm (480 L/min) and can operate up to 5000 psi (350 bar). With a typical response time of 2 ms and minimal leakage at reseat, this valve is robust yet easy to adjust with an internal hex adjustment screw. The RVISCNV weighs approximately 3.10 lb (1.40 kg) and includes a Viton seal kit for durability in demanding environments.