SUN HYDRAULICS
RVEAONV

***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 RVEAONV (RVEAONV) is a ventable, pilot-operated, balanced piston relief cartridge designed for precise pressure regulation. This valve remains normally closed until the inlet port pressure reaches the preset level, at which point it opens to the tank port, throttling flow to maintain consistent pressure. It features a vent port that allows remote control via other pilot or 2-way valves. Known for its accuracy and smooth operation, this valve is moderately fast with low noise levels and minimal pressure rise versus flow. It accepts maximum pressure at port 2, making it suitable for cross-port relief circuits, though spool leakage should be considered in such applications. The main stage orifice is shielded by a 150-micron stainless steel screen for protection. However, due to potential spool leakage, it is not recommended for load-holding applications. Back pressure on the tank port directly adds to the valve setting in a 1:1 ratio. The RVEAONV model is compatible with systems using phosphate ester fluids when equipped with EPDM seals; exposure to petroleum-based fluids can damage these seals. This cartridge incorporates Sun's floating style construction to reduce internal binding risks due to excessive installation torque or machining variations of the cavity/cartridge. It has a cavity type T-2A and belongs to Series 2 with a capacity of 30 gpm (120 L/min). The factory sets pressure settings at 4 gpm (15 L/min), with a maximum operating pressure of 5000 psi (350 bar). The control pilot flow ranges from 10-15 in\u00b3/min (0.16-0.25 L/min), and typical response time is around 10 ms. The maximum valve leakage at 110 SUS (24 cSt) is approximately 3 in\u00b3/min at 1000 psi (50 cc/min at 70 bar). The adjustment requires about five clockwise turns to increase settings, and installation specifications include a torque range of 45-50 lbf\u00b7ft (61-68 Nm).