18-29-605.4.1 Materials for supply pipes and fittings.

   All new and replaced water supply pipes and fittings shall be of materials specified in Tables 18-29-605.4, 18-29-605.5 and 18-29-605.6, subject to the restrictions indicated in Column B of the table. Water supply pipe and fittings shall conform to the standards cited in Tables 18-29-605.4, 18-29-605.5 and 18-29-605.6 and to the lead content restrictions specified in Section 18-29-605.3.

(Amend Coun. J. 11-16-16, p. 37901, Art. IV, § 8)

18-29-605.5 Water distribution pipe.

   Water distribution pipe shall conform to NSF 61 and shall conform to one of the standards listed in Table 18-29-605.5. All hot water distribution pipe and tubing shall have a minimum pressure rating of 100 psi (690 kPa) at 1805°F (825°C).

Table 18-29-605.5
Water Distribution Pipe

Material	Standard
Brass pipe	ASTM B43
Chlorinated Polyvinyl Chloride (CPVC) plastic pipe and tubing a	ASTM D2846; ASTM F441; ASTM F442; CSA B137.6
Polypropylene (PP) plastic pipe and tubing a	ASTM F1412
PVDF plastic pipe and tubing a	ASTM F1412
Copper or copper-alloy pipe	ASTM B42; ASTM B302
Copper or copper-alloy tubing (Type K, L, or M)	ASTM B74; ASTM B88; ASTM B251; ASTM B447
Galvanized steel pipe	ASTM A53

 

a.   For secondary water used in process applications only.

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 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)

18-29-605.7 Valves.

   All valves shall be compatible with the type of piping material installed in the system.

18-29-605.8 Manufactured pipe nipples.

   Manufactured pipe nipples shall conform to the following standards:

   1.   Steel nipples: ASTM A733.

   2.   Brass-plated, copper-plated, or nickel-plated: ASTM B687

18-29-605.9 Prohibited joints and connections.

   The following types of joints and connections shall be prohibited:

   1.   Cement or concrete joints;

   2.   Joints made with fittings not approved for the specific installation;

   3.   Solvent-cement joints between different types of plastic pipe;

   4.   Saddle-type fittings;

   5.   Dresser couplings.

18-29-605.10 Flexible water connectors.

   Flexible water connectors exposed to continuous pressure shall conform to ASME A112.18.6/CSA B125.6. Access shall be provided to all flexible water connectors. Flexible water connectors for sink and lavatory faucets and water closets shall not exceed 30 inches (762 mm).

(Amend Coun. J. 10-14-21, p. 37722, Art. VI, § 17)