: Backflow preventers not only save water, but mitigate disease and injury risks by preventing used water or other contaminants from re-entering the potable water supply. Since the introduction of regulation that required backflow preventers to be widely adopted in the 1970’s, backflow prevention...
The backflow prevention valve and shutoff valves of the assemblies are normally threaded or bolted together with a fixed lay-length. As such, if a retrofit or replacement of an existing valve or assembly is desired, spools and spacing flanges are often required to be added to the replacement...