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2" to 8" Deringer Backflow Preventers
Deringer Backflow Assemblies are the smallest, lightest, most economical, and best performing valves in the industry. They're the only all stainless steel backflow preventers and they are available with butterfly valves or OS&Y Gate Valves. Backflow Direct carries DC, RP, DCDA-II and RPDA-II backflow preventers. All of our valves ship for free and their small size and light weight makes for hassle free shipping and delivery. You can install most of the Deringer models with just a one-man crew, no bulky equipment, so installs are more efficient and much easier.