Union, Application Potable Water, Fitting Side A Connection Type Press-Fit, Fitting Side B Connection Type MNPT, Fitting Side A Copper Tube Size 1/2 in, Fitting Material Bronze, Fitting Side B Pipe Size 1/2 in, O-Ring Material EPDM, Specific Fitting Shape Straight Union, Overall Length 2 11/16 in, Maximum Operating Pressure 200 psi, Maximum Operating Temperature 250 Degrees F, Standards ASTM B75, ASTM B88