SUN HYDRAULICS
RVISLAV

***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 RVISLAV (RVISLAV) is a ventable, pilot-operated, balanced poppet relief cartridge designed for precise pressure regulation in hydraulic systems. This normally closed valve opens to tank port 2 when the inlet port 1 pressure reaches its set threshold, effectively throttling flow and maintaining stable pressure levels. It features a vent port 3 that allows remote control via other pilot or two-way valves, making it well-suited for load-holding applications when paired with zero-leak valving on the vent port. The valve is capable of handling maximum pressure at port 2 and can be used in cross-port relief circuits. A notable feature of the RVISLAV is its insensitivity to oil temperature variations and contamination, ensuring reliable performance across diverse conditions. The valve's main stage orifice is shielded by a 150-micron stainless steel screen to prevent debris ingress. Additionally, back pressure at tank port 2 directly influences the valve setting at a 1:1 ratio. Sun's floating style construction minimizes potential binding of internal components due to installation torque or machining discrepancies. The RVISLAV exhibits a capacity of up to 120 gpm (480 L/min), with factory pressure settings established at 4 gpm (15 L/min). It operates under a maximum pressure of 5000 psi (350 bar) and has a control pilot flow between 15-20 in\u00b3/min (0.25-0.33 L/min). Typical response time is around 2 milliseconds, with maximum leakage upon reseating limited to 10 drops per minute (0.7 cc/min). The valve's adjustment mechanism allows for fine-tuning via an internal hex screw, with full clockwise turns increasing the setting up to five times.