Bulkhead Union Application Air Fitting Side A Connection Type Push-to-Connect Fitting Side B Connection Type NPTF Fitting Side B Pipe Size 3/8 in Fitting Side A Tube Outer Diameter 3/8 in Fitting Material Brass Color Gold Includes Pre-Applied Thread Sealant Yes Maximum Operating Pressure 150 psi Maximum Operating Temperature 200 Degrees F Overall Length 1 31/32 in Specific Fitting Shape Straight Bulkhead Union Adapter Standards DOT FMVSS 571.106 SAE J1131