Jay R. Smith Mfg. Co. has expanded its hydrant line with the first ASSE 1052 and 1019-B approved hydrant-the Guardian Dual Check. The new Guardian Dual Check, Figure No. 5519, Hydrant offers a range of features designed to make the installation and operation easier. It drains automatically with and without a hose connected, meets ASSE 1052, is available without a stainless steel box for alternative installations, features a drop down door that allows 180