WebSep 2, 2024 · Backflow valve; Backflow valve acts as a safety unit, allowing the flow of the fluid only in a single direction. Supply lines; These parts of boiler are pipes that are responsible for delivering the heated … Web♦ If a chemical pot-feeder or automatic chemical feeder is installed to serve a boiler, it shall be classified a high hazard and will require an ASSE 1013 device. If chemicals are used …
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Backflow Preventer Types NFPA NFPA
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