Union Application Air Fitting Side A Connection Type Compression Fitting Side B Connection Type Compression Fitting Material Brass Fitting Side A Tube Outer Diameter 3/4 in Fitting Side B Tube Outer Diameter 3/4 in Maximum Operating Pressure 150 psi Maximum Operating Temperature 200 Degrees F Overall Length 2 19/32 in Specific Fitting Shape Straight Connector Compatible Fitting Brands NTA Thread Size A 1-18 Thread Size B 1-18 Series NTA System of Measurement Imperial