A cathodic protection system serves an above-grade double detector check valve assembly with ductile iron risers and PVC piping. Two number four American Wire Gauge High Molecular Weight Polyethylene bond cables connect to the ductile iron pipe via cable-to-pipe connections, with additional bonding wires routed to a prepackaged zinc anode and a test station housing black and white number ten American Wire Gauge Thermoplastic High Heat-Resistant Nylon-Coated anode, test, and drain cables. Polyethylene encasement surrounds the ductile iron fittings, and notes dictate that buried non-welded metallic pipe joints must be bonded and all buried bolts and nuts coated with bitumastic.
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