Suitable for use with a wide range of refrigerants, including R12 gas, our Split Air Conditioning Valve is the versatile choice for commercial Air Conditioning Units and Refrigeration Systems with a maximum working pressure of 42.2kg/cm2G.¬†Manufactured with a copper tube connection, this Split Air Conditioning Valve features a 1/2″ x 20UNF charging port, a valve stem with a HNBR O-Ring, and it is available with either a brass flare nut or a plastic flare nut to suit every budget. Bubble leak tested with nitrogen. Smooth surface without defects.