Backflow preventers are assemblies with two check valves and two shut-off valves that prevent reverses in process flow. They may also include test cocks for each chamber within the assembly. Backflow ...

It's also possible that your backflow preventer is near the main shutoff valve for your home. For a homeowner, the sewer backflow preventer usually will be above the ground, so you or your plumber ...

MOKENA, IL — ASSE International has announced that, as part of recent updates to New Hampshire Regulation Env-Dw 505, the ...