Backflow Reference

Common backflow scenarios and preventer types.

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Formula and source

(reference page; no compute) Common backflow hazards mapped to typical preventer types (RP, DCV, PVB, AVB, AG) per the cross-connection categories described in IPC 2021 Section 608 / AWWA M14.

IPC 2021 (International Plumbing Code). Section 608. AWWA M14 by name.

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