Watts Anti-Siphon Backflow Preventer, Bronze, Watts 800 Series, NPT Connection – 800M4QT-1″
800 Series,Use for health hazard continuous-pressure applications where the water enters equipment at or below its flood rim.,Bronze Antisiphon Vacuum Breakers,Protect the potable water supply against backsiphonage of contaminated water in indoor point-of-use applications. NPT connection.,Meet USC standards.