SUN HYDRAULICS
RVGDCDN

***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 RVGDCDN (RVGDCDN) is a ventable, pilot-operated, balanced piston relief cartridge with an external drain, designed for precise pressure regulation. These normally closed pressure regulating valves open to tank port 2 when the inlet port 1 pressure reaches the valve setting, throttling flow to maintain the desired pressure. They feature a vent port 3 for remote control and a drain port 4 that ensures insensitivity to back pressure. Known for their accuracy and low-pressure rise versus flow, these valves operate smoothly and quietly with moderate speed. The RVGDCDN is suitable for cross-port relief circuits, although spool leakage should be considered in such applications. The main stage orifice is protected by a 150-micron stainless steel screen. Notably, they are not recommended for load-holding applications due to potential spool leakage. Pressure at port 4 adds directly to the valve setting at a 1:1 ratio but should not exceed 5000 psi (350 bar). This model incorporates Sun's floating style construction to reduce internal part binding risks from excessive installation torque or machining variations in cavities/cartridges. The RVGDCDN fits into cavity T-23A and is part of Series 3 with a capacity of up to 60 gpm (240 L/min). Factory pressure settings are established at 4 gpm (15 L/min), with a maximum operating pressure of 5000 psi (350 bar). Control pilot flow ranges from 15 to 20 in\u00b3/min (0.25 to 0.33 L/min), and typical response time is around 10 ms. Maximum valve leakage at 110 SUS (24 cSt) is approximately 4 in\u00b3/min (65 cc/min) at 1000 psi (70 bar). It features an adjustment screw with an internal hex size of 5/32 inch (4 mm) and requires specific installation torques for optimal performance. The model weighs approximately 1.60 lb (0.70 kg) and uses Viton seal kits for reliable sealing under various conditions.