Apollo 1 in. PVB Backflow w/ Union Ball Valves

Use the Apollo Reduced Pressure Backflow Preventer 4ALF Series 1 in. Bronze to prevent the backflow of polluted water into the potable water supply to avoid health hazards. It is built of heavy-duty materials, making it fit for long-term use. Featuring union ball valves, this vacuum breaker allows convenient adjustment of water flow. Its test cocks let you conduct testing easily for reliable operation.