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.
Material | Standard |
Material | Standard |
Cast iron | ASME B16.4; ASME B16.12 |
Polypropylene (PP) plastic pipe and tubing a | ASTM F2389; CSA B137.11 |
PVDF plastic pipe and tubing a | ASTM F1412 |
Chlorinated polyvinyl chloride (CPVC) plastic a | ASSE 1061; ASTM D2846; ASTM F437; ASTM F438; ASTM F439; CSA B137.6 |
Copper or copper alloy | ASME B16.15; ASME B16.18; ASME B16.22; ASME B16.51; ASSE 1061; ASTM F1476; ASTM F1548; ASTM F3226 |
Gray iron and ductile iron | ASTM F1476; ASTM F1548; AWWA C110/A21.10; AWWA C153/A21.53 |
Malleable iron | ASME B16.3 |
Steel | ASME B16.9; ASME B16.11; ASME B16.28 |
a. For secondary water used in process applications only.
(Amend Coun. J. 10-14-21, p. 37722, Art. VI, § 16)