SUN HYDRAULICS
RVEAQNN

***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 RVEAQNN (RVEAQNN) is a ventable, pilot-operated, balanced piston relief cartridge designed to function as a normally closed pressure regulating valve. It operates by opening to tank port 2 when the inlet port 1 pressure reaches the set level, thereby throttling flow to regulate pressure. This model includes a vent port 3 for remote control via other pilot or two-way valves. Known for its accuracy and smooth operation, it features low pressure rise versus flow and moderate speed. The valve can be controlled below its own setting using a remote pilot relief on port 3 vent and is suitable for cross-port relief circuits, though spool leakage should be considered in such applications. A key feature is its stainless steel screen protecting the main stage orifice. However, it is not recommended for load-holding applications due to potential spool leakage. The RVEAQNN can handle maximum pressures at port 2 and has a backpressure on tank port 2 that adds directly to the valve setting at a 1:1 ratio. Cartridges with EPDM seals are intended for systems using phosphate ester fluids; exposure to petroleum-based substances can cause seal damage. The model's construction utilizes Sun's floating style design to reduce internal part binding risks from excessive installation torque or cavity-cartridge machining variations. Additional specifications include a capacity of 30 gpm (120 L/min), factory pressure settings established at 4 gpm (15 L/min), and a maximum operating pressure of 5000 psi (350 bar). It features an adjustment range requiring up to five clockwise turns to increase settings and comes with specific torque requirements for installation and locknut adjustments. The model weighs approximately .70 lb (.30 kg) and includes a Viton seal kit option (990202006).