WW0886014, Watts, 3/4 Backflow Repair Kit, Diaphragm Assembly, Gasket Washer, Three O-Rings, Nf8

This hose connection vacuum breaker is designed specifically for wall and yard hydrants to prevent the reverse flow of polluted water from entering into the potable water supply due to backsiphonage. This kit consists of a diaphragm assembly, gasket washer and three O-rings (adapter O-ring and two sleeve O-rings). It permits manual draining for freezing conditions. Check with local inspection authorities for installation requirements.