Refrigeration Press Fitting Application Air Conditioning Ethylene Glycol Heat Pump Non-Potable Water Refrigeration Fitting Side A Connection Type Press-Fit Fitting Side B Connection Type Press-Fit Fitting Side A Copper Tube Size 7/8 in Fitting Side B Copper Tube Size 3/4 in Fitting Material Copper Material Grade C12200 O-Ring Material HNBR Specific Fitting Shape Reducer Fitting Side A Tube Outer Diameter 7/8 in Fitting Side B Tube Outer Diameter 3/4 in Overall Length 2 7/8 in