SUN HYDRAULICS
RVGAKKN

***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 RVGAKKN (RVGAKKN) is a ventable, pilot-operated, balanced piston relief cartridge designed for pressure regulation in hydraulic systems. This valve is typically closed and activates to open the tank port when the inlet pressure reaches the pre-set level, thus regulating flow and maintaining desired pressure levels. It features a vent port that allows for remote control using other pilot or two-way valves. Known for its accuracy and smooth operation, this valve provides low-pressure rise versus flow and operates quietly with moderate speed. The RVGAKKN can handle maximum pressure at port 2, making it 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 to ensure durability. However, it is not recommended for load-holding applications due to potential spool leakage. The back pressure on the tank port directly adds to the valve setting at a 1:1 ratio. Cartridges equipped with EPDM seals are compatible with phosphate ester fluids but may be damaged by petroleum-based fluids. The design incorporates Sun's floating style construction to prevent internal binding due to installation torque or machining variations. This valve fits into Cavity T-17A/Series 3 and has a capacity of 60 gpm (240 L/min), with factory pressure settings established at 4 gpm (15 L/min). It can operate at a maximum pressure of 5000 psi (350 bar) and has a typical response time of 10 ms. Maximum leakage is rated at 4 in\u00b3/min at 1000 psi (65 cc/min at 70 bar). The adjustment requires up to five clockwise turns to increase the setting, utilizing an internal hex size of 5/32 inch (4 mm) for fine-tuning adjustments.