SUN HYDRAULICS
RVISCCV

***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 RVISCCV (RVISCCV) is a ventable, pilot-operated, balanced-poppet relief cartridge designed to regulate pressure by opening to tank port 2 when the inlet port 1 reaches the valve's set pressure. It features a vent port 3 for remote control through other pilot or 2-way valves. Known for its accuracy and low pressure rise versus flow, this valve operates smoothly and quietly with moderate speed. The internal modulating mechanism helps prevent cavitation-related issues such as noise and manifold erosion. It is suitable for load-holding applications if the valving on vent port 3 is zero leak. The valve can handle maximum pressure at port 2, making it ideal for cross-port relief circuits, and a remote pilot relief on the vent can control it below its own setting. It remains effective despite varying oil temperatures and contamination due to its design, which includes a main stage orifice protected by a 150-micron stainless steel screen. Back pressure at tank port 2 directly affects the valve setting at a 1:1 ratio. The Sun floating style construction minimizes internal binding risks due to installation torque or machining variations. This Series 4 cartridge has a capacity of up to 120 gpm (480 L/min), with factory pressure settings established at 4 gpm (15 L/min). It supports a maximum operating pressure of 5000 psi (350 bar) and has a control pilot flow of between 15-20 in\u00b3/min (0.25-0.33 L/min). Typical response time is around 2 ms with maximum valve leakage at reseat being approximately ten drops per minute (0.7 cc/min). For installation, it requires specific torque settings: valve installation torque between 350-375 lbf ft (474-508 Nm) and locknut torque of 80-90 lbf in (9-10 Nm). The model weighs approximately 3.10 lb (1.40 kg) and utilizes Viton seals with seal kit number: 990219006.