Union Connector Application Air Potable Water Fitting Side A Connection Type Compression Fitting Side B Connection Type Compression Fitting Material Polypropylene Fitting Side A Tube Outer Diameter 5/8 in Fitting Side B Tube Outer Diameter 1/2 in Maximum Operating Pressure 50 psi Maximum Operating Temperature 212 Degrees F Overall Length 2 1/4 in Specific Fitting Shape Straight Connector Series Fast Tite System of Measurement Imperial Standards FDA Approved NSF/ANSI 51