18-29-605.6 Fittings.

Pipe fittings shall be approved for installation with the piping material installed and shall conform to the respective pipe standards or one of the standards listed in Table 18-29-605.6. All pipe fittings utilized in water supply systems shall also conform to NSF 61. The fittings shall not have ledges, shoulders or reductions capable of retarding or obstructing flow in the piping. Ductile and gray iron pipe fittings shall be cement mortar lined in accordance with AWWA C104.

Table 18-29-605.6
Pipe Fittings

Material	Standard
Cast iron	ASME B 16.4; ASME B 16.12
Polypropylene (PP) plastic pipe and tubing a	ASTM F 1412
PVDF plastic pipe and tubing a	ASTM F 1412
Chlorinated polyvinyl chloride (CPVC) plastic a	ASTM F 437; ASTM F 438; ASTM F 439
Copper or copper alloy	ASME B 16.15; ASME B 16.18; ASME B 16.22; ASME B 16.23; ASME B 16.26; ASME B 16.29; ASME B 16.32
Gray iron and ductile iron	AWWA C 110; AWWA C 153
Malleable iron	ASME B 16.3
Steel	ASME B 16.9; ASME B 16.11; ASME B 16.28

a For secondary water used in process applications only.

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