SUN HYDRAULICS
RVGDKDN

***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 RVGDKDN (RVGDKDN) is a ventable, pilot-operated, balanced piston relief cartridge with an external drain, designed as a normally closed pressure regulating valve. This valve is engineered to open to tank port 2 when the inlet port 1 pressure reaches the valve setting, effectively throttling flow to regulate pressure. It features a vent port 3 for remote control via other pilot or two-way valves and a drain port 4, ensuring insensitivity to back pressure. Known for accuracy and low pressure rise versus flow, this valve operates smoothly and quietly with moderate speed. It can accept maximum pressure at port 2 and is suitable for cross-port relief circuits, though spool leakage should be considered in such applications. The main stage orifice is protected by a 150-micron stainless steel screen. However, it is not suitable for load holding applications due to potential spool leakage. The RVGDKDN model incorporates Sun's floating style construction to minimize internal part binding risks due to excessive installation torque or cavity/cartridge machining variations. The cavity type is T-23A with a series 3 capacity of 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 15-20 in\u00b3/min (0.25-0.33 L/min), with a typical response time of 10 ms and maximum valve leakage at 110 SUS (24 cSt) being 4 in\u00b3/min at 1000 psi (65 cc/min at 70 bar). The adjustment requires approximately five clockwise turns to increase the setting, with specific torque values provided for installation and locknut adjustments. The model weighs approximately 1.60 lb (0.70 kg) and uses Viton seal kits like the cartridge Viton: 990023006 for maintenance or replacements.