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Adding a new backflow preventer to an older system may negatively impact fire protection system performance. Here are some best practices to ensure existing sprinkler systems operate as intended when adding backflow preventers.
Some existing systems were never hydraulically calculated. Some were designed around pipe schedules. Some have little or no remaining safety margin. Add a backflow preventer without understanding the available water supply, system demand and device pressure loss, and a system that once appeared adequate may fail to deliver.
Major events — especially the 1933 Chicago World’s Fair amoebic dysentery outbreak — led to better research, plumbing codes and the development of testable backflow prevention devices.
The history of backflow prevention is a story of public health incidents over the years, in which health officials and members of the plumbing industry learned the dangers and health hazards associated with cross-connections after investigating backflow incidents that sickened and killed many people.
Watts Water Technologies has been named to TIME’s inaugural World’s Most Impactful Companies 2026 list for its commitment to sustainability, water conservation, and global impact.
This sweepstakes gives customers a chance to build product knowledge while competing to win prizes that transform everyday spaces into family-friendly entertainment areas.
This portfolio of labor-saving solutions isbuilt to deliver practical, job-ready knowledge to help contractors, engineers, and installers save time from foundation through finish.
Superior offers a comprehensive portfolio that includes firetube, watertube and condensing boilers and has annualized sales of approximately $60 million.
The program includes six accredited continuing education courses designed to help industry professionals expand their expertise in commercial building leak detection and backflow flood prevention technology.