Female Adapter Application Gases Fitting Side A Connection Type Compression Fitting Side B Connection Type FNPT Fitting Material Steel Fitting Side A Tube Outer Diameter 3/4 in Maximum Operating Pressure 125 psi Maximum Operating Temperature 120 Degrees F Overall Length 4 7/16 in Specific Fitting Shape Straight Adapter Fitting Side B Pipe Size 3/4 in Thread Size A 3/4-14 Thread Size B 3/4-14 System of Measurement Imperial Standards 49 CFR Part 192 ASTM D2513