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 1/2 in Fitting Side B Tube Outer Diameter 1/2 in Maximum Operating Pressure 2 200 psi Maximum Operating Temperature 400 Degrees F Overall Length 2 1/32 in Specific Fitting Shape Straight Connector Compatible Fitting Brands A-LOK Thread Size A 3/4-20 Thread Size B 3/4-20 System of Measurement Imperial