757 & 757DCDA 212'' 6'' Backflow Preventer Repair | Watts Repairs

Join the experts at Watts as they walk you through the inspection and repair the 757 and 757DCDA backflow preventers, sizes 2 ½" - 6". This video covers basic assembly maintenance as well as cam-check inspection and repair. To learn more about backflow, cross connections and water safety, check out http://www.watts.com