Refrigeration Service/Shutoff Valve, Style Front Seating, Flow Bi-directional, Connection Size 7/8 in ODF, Outside Dia. 1 in, Operating Temp. Range -40 Degrees F to +250 Degrees F, Operating Pressure Vacuum to 750 psi, Body Material Brass, Connection Material Copper, Max. Working Pressure 750 psi, For Use With R-22 Air Conditioning Condensing Units and Heat Pumps, Includes 1/4 in SAE Access Valve on Right Facing Field Connection