Patent ID: 6338255
Filing Date: 2002-01-15
Classification: B60H,F17C,F25B

Abstract:
In a refrigerant recharging system for adding refrigerant to an air conditioning system, a device for charging virgin refrigerant into the air conditioning system without exposing the virgin refrigerant to a process of the recharging system that is capable of removing certain additives in the virgin refrigerant, said device comprising:a main valve having a first inlet for receiving the virgin refrigerant from a source of virgin refrigerant, a second inlet for connection to the recovery system and for receiving refrigerant therefrom, and an outlet for connection to the air conditioning system to deliver refrigerant thereto, said main valve being operable to provide at least two flow paths that are exclusive of each other, a first flow path from said first inlet to said outlet, and a second flow path from said second inlet to said outlet; and a second valve connected to said first inlet, said second valve configured for connection to said source of virgin refrigerant and being operable between open and closed positions for controlling the flow of fluid from said source of virgin refrigerant through said second valve to said main valve.