SUN HYDRAULICS
RVISCAN

***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 RVISCAN (Material Number: RVISCAN) is a ventable, pilot-operated, balanced poppet relief cartridge designed for precise pressure regulation. This valve is normally closed and opens to tank port 2 when the inlet port 1 pressure reaches the set threshold, effectively throttling flow to maintain the desired pressure. It features a vent port (port 3) allowing remote control by other pilot or two-way valves, making it suitable for load holding applications where zero leak valving on the vent port is essential. The valve can handle maximum pressure at port 2 and is apt for cross-port relief circuits. A remote pilot relief on the vent can modulate the valve below its own setting. The RVISCAN demonstrates excellent performance with low pressure rise versus flow, smooth operation, and moderate speed, while being relatively unaffected by varying oil temperatures and contamination. The main stage orifice is safeguarded by a 150-micron stainless steel screen to ensure durability. Notably, back pressure on tank port 2 adds directly to the valve setting at a 1:1 ratio. Constructed with Sun's floating style design, it minimizes risks of internal binding due to installation torque or machining variations. Key specifications include a cavity T-19A series with a capacity of 120 gpm (480 L/min), maximum operating pressure of 5000 psi (350 bar), and control pilot flow ranging from 15 to 20 in\u00b3/min (0.25 to 0.33 L/min). The typical response time is around 2 ms, with maximum valve leakage at reseat being just 10 drops/min (0.7 cc/min). The adjustment mechanism allows for up to five clockwise turns to increase settings, ensuring easy customization for specific needs. The RVISCAN model weighs approximately 3.10 lb (1.40 kg) and includes a Viton seal kit under cartridge number 990219006 for enhanced reliability in various hydraulic systems.