The Automatic Dual Recycle Guard from AirSeptprovides automated protection against excess lubricant and other contaminants. The ADRG protects most brands of A/C service equipment by incorporating new activation technology that requires no electrical interface with service equipment, ensuring that the device is always in the correct operating mode. The ADRG is easy to drain and includes two replaceable internal filters and maintains a continual refrigerant flow while in operation when paired with either½” ACME or ¼” Flare fittings and a 36” R134a hose.