SUN HYDRAULICS
RVCAOHV

***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 RVCAOHV (RVCAOHV) is a ventable, pilot-operated, balanced piston relief cartridge designed for precise pressure regulation in hydraulic systems. This normally closed valve begins to open when the inlet port pressure reaches the preset level, directing flow to the tank port and maintaining stable pressure. It features a vent port that allows for remote control by other pilot or two-way valves, offering flexibility in various applications. The RVCAOHV is characterized by its accuracy, low pressure rise relative to flow, smooth operation, and moderate speed. It can handle a maximum operating pressure of 5000 psi (350 bar) and a flow capacity of 15 gpm (60 L/min). This valve is suitable for use in cross-port relief circuits but should not be used in load-holding applications due to spool leakage. The main stage orifice is safeguarded by a 150-micron stainless steel screen, ensuring durability and reliability. Back pressure at the tank port directly adds to the valve setting at a 1:1 ratio. For systems using phosphate ester fluids, cartridges with EPDM seals are recommended; exposure to petroleum-based fluids can damage these seals. The RVCAOHV incorporates Sun's floating style construction to minimize internal binding risks due to installation torque or machining variations. The valve's response time is typically around 10 milliseconds with minimal leakage under standard conditions. Adjustments can be made via an internal hex screw with specific torque requirements for secure installation and operation. This model weighs approximately 0.40 lb (0.20 kg) and comes with an available Viton seal kit for maintenance needs.