SUN HYDRAULICS
RVGAMDN

***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 RVGAMDN (RVGAMDN) is a ventable, pilot-operated, balanced piston relief cartridge designed for precise pressure regulation in hydraulic systems. This normally closed valve opens to the tank port when the inlet pressure reaches the set threshold, effectively throttling flow to maintain desired pressure levels. A notable feature is its vent port, which allows for remote control via other pilot or 2-way valves. Known for their accuracy and smooth operation, these valves exhibit low pressure rise versus flow and are moderately fast in response. They are suitable for cross-port relief circuits but not recommended for load-holding applications due to spool leakage. The valve's main stage orifice is safeguarded by a 150-micron stainless steel screen, ensuring reliability and durability. The RVGAMDN model can handle a maximum operating pressure of 5000 psi (350 bar) and features a factory pressure setting established at 4 gpm (15 L/min). It accommodates a control pilot flow between 15-20 in\u00b3/min (0.25-0.33 L/min) with a typical response time of 10 ms. Additionally, back pressure on the tank port is directly additive to the valve setting at a 1:1 ratio. The cartridge incorporates Sun's floating style construction to minimize internal part binding due to installation torque or machining variations. This model comes with an adjustment screw internal hex size of 5/32 inches (4 mm), allowing users to increase settings with up to 5.5 clockwise turns. The valve hex size measures 1-1/4 inches (31.8 mm), and it requires an installation torque of 150-160 lbf ft (203-217 Nm). It weighs approximately 1.60 lb (0.70 kg) and includes Viton seal kits for use with phosphate ester fluids, though exposure to petroleum-based substances should be avoided as it can damage the seals.