SUN HYDRAULICS
RVEAQLV

***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 RVEAQLV (RVEAQLV) is a ventable, pilot-operated, balanced piston relief cartridge specifically 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 to throttle flow and maintain pressure. It features a vent port that allows for remote control by other pilot or 2-way valves, making it versatile for various applications. The RVEAQLV is known for its accuracy, low pressure rise versus flow characteristics, smooth operation, quiet performance, and moderately fast response time of approximately 10 ms. This cartridge can handle a maximum operating pressure of 5000 psi (350 bar) and has a capacity of 30 gpm (120 L/min). It's suitable for cross-port relief circuits but should be noted that spool leakage may occur in such setups. The valve's main stage orifice is safeguarded by a 150-micron stainless steel screen, though it's not ideal for load-holding applications due to potential leakage. The RVEAQLV incorporates Sun Hydraulics' floating style construction to minimize internal binding risks from excessive installation torque or machining variations. It accepts back pressure on the tank port directly additive to the valve setting at a 1:1 ratio. For systems using phosphate ester fluids, cartridges with EPDM seals are recommended as exposure to petroleum-based fluids can cause damage. Installation requires specific torques: valve installation at 45-50 lbf ft (61-68 Nm), adjustment screw internal hex size of 5/32 in (4 mm), and locknut torque between 80-90 lbf in (9-10 Nm). The model weighs approximately .70 lb (0.30 kg) and comes with a Viton seal kit option under part number 990202006.