SUN HYDRAULICS
RVGDKHN

***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 RVGDKHN (RVGDKHN) is a ventable, pilot-operated, balanced piston relief cartridge with an external drain, designed for precise pressure regulation in hydraulic systems. This valve remains normally closed until the inlet port 1 reaches a pre-set pressure, at which point it opens to tank port 2 to throttle flow and maintain the desired pressure. It includes a vent port 3 for remote control and a drain port 4 that ensures insensitivity to back pressure. Known for its accuracy and low-pressure rise versus flow, this valve operates smoothly and quietly with moderate speed. This relief cartridge can handle maximum pressures at port 2, making it ideal for cross-port relief circuits; however, users should be mindful of spool leakage in such applications. The main stage orifice is safeguarded by a 150-micron stainless steel screen. It is not recommended for load-holding due to potential leakage. The pressure at port 4 directly adds to the valve setting at a 1:1 ratio but should not exceed 5000 psi (350 bar). The Sun floating style construction minimizes binding risks from excessive installation torque or machining variations. The RVGDKHN fits into cavity T-23A and belongs to the Series 3 capacity range of up to 60 gpm (240 L/min). It operates under a maximum pressure of 5000 psi (350 bar) with control pilot flow between 15 - 20 in\u00b3/min (0.25 - 0.33 L/min) and typical response time of around 10 ms. The valve exhibits minimal leakage at maximum conditions and allows adjustment through clockwise turns up to five times. Installation requires specific torque settings, ensuring secure and efficient use across various hydraulic applications where precise pressure control is essential.