Reducer Application Gas and Fuel Oil Fitting Side A Connection Type FTG Fitting Side B Connection Type Press-Fit Fitting Side A Copper Tube Size 4 in Fitting Material Carbon Steel Fitting Side B Pipe Size 3 in O-Ring Material HNBR Specific Fitting Shape Straight Adapter Finish/Coating Zinc Nickel-Plated Overall Length 7 11/32 in Maximum Operating Pressure 200 psi Maximum Operating Temperature 250 Degrees F