Union Application Air Inert Gases Non-Combustible Gases Potable Water Fitting Side A Connection Type Compression Fitting Side B Connection Type Compression Fitting Material Brass Fitting Side A Tube Outer Diameter 5/8 in Fitting Side B Tube Outer Diameter 5/8 in Maximum Operating Pressure 650 psi Maximum Operating Temperature 200 Degrees F Overall Length 2 1/16 in Specific Fitting Shape Straight Connector Thread Size A 13/16-18 Thread Size B 13/16-18 Series Compression