Union Application Gases Liquids Fitting Side A Connection Type Compression Fitting Side B Connection Type Compression Fitting Material Brass Fitting Side A Tube Outer Diameter 3/8 in Fitting Side B Tube Outer Diameter 3/8 in Maximum Operating Pressure 2 300 psi Maximum Operating Temperature 400 Degrees F Overall Length 1 25/32 in Specific Fitting Shape Straight Connector Compatible Fitting Brands A-LOK Thread Size A 9/16-20 Thread Size B 9/16-20 System of Measurement Imperial