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 1/2 in Fitting Side B Tube Outer Diameter 3/8 in Maximum Operating Pressure 150 psi Maximum Operating Temperature 212 Degrees F Overall Length 1 15/16 in Specific Fitting Shape Straight Connector Series Fast Tite System of Measurement Imperial Standards FDA Approved NSF/ANSI 51