Adapter, Application Air, Fuel, Natural Gas, Fitting Side A Connection Type Press-Fit, Fitting Side B Connection Type MNPT, Fitting Material Carbon Steel, Fitting Side A Pipe Size 1 1/4 in, Fitting Side B Pipe Size 1 1/4 in, O-Ring Material HNBR, Specific Fitting Shape Straight Adapter, Finish/Coating Zinc Nickel-Plated, Overall Length 3 21/32 in, Maximum Operating Pressure 125 psi, Maximum Operating Temperature 180 Degrees F