Watts Drainage HY-420 non-freeze key operated wall hydrant with chrome plated face, integral vacuum breaker, 3/4 in.(19mm) hose connection, 3/4 in.19mm) female x 1 in.(25mm) male pipe connection, all bronze head, seat casting and internal working parts, bronze wall casing, and loose key. Complies with ASSE 1019-2004, UPC/IAMPO Listed. Max. operating pressure 125 psi.