As an alternative to the provisions of Sections 1202 and 1203, piping shall be designed, installed, inspected and tested in accordance with ASME B31.9.
Piping material shall conform to the standards cited in this section.
Exception: Embedded piping regulated by Section 1209.
Hydronic pipe shall conform to the standards listed in Table 1202.4. The exterior of the pipe shall be protected from corrosion and degradation.
|MATERIAL||STANDARD (see Chapter 15)|
|Acrylonitrile butadiene styrene |
(ABS) plastic pipe
|ASTM D 1527; ASTM D 2282|
|Brass pipe||ASTM B 43|
|Brass tubing||ASTM B 135|
|Copper or copper-alloy pipe||ASTM B 42; ASTM B 302|
|Copper or copper-alloy tube |
(Type K, L or M)
|ASTM B 75; ASTM B 88; |
ASTM B 251
|Chlorinated polyvinyl chloride |
(CPVC) plastic pipe
|ASTM D 2846; ASTM F 441; |
ASTM F 442
|Cross-linked polyethylene/ |
|ASTM F 1281; |
|Cross-linked polyethylene |
|ASTM F 876; ASTM F 877|
|Ductile iron pipe||AWWA C151/A21.51; AWWA C115/A21.15|
|Lead pipe||FS WW-P-325B|
|Polybutylene (PB) plastic pipe |
|ASTM D 3309|
|Polyethylene/aluminum/polyethylene (PE-AL-PE) pressure pipe||ASTM F 1282; CSA B137.9|
|Polyethylene (PE) pipe, tubing |
and fittings (for ground source
heat pump loop systems)
|ASTM D 2513; |
ASTM D 3035; ASTM D 2447; ASTM D 2683;
ASTM F 1055; ASTM D 2837; ASTM D 3350;
ASTM D 1693
|Polypropylene (PP) plastic pipe||ASTM F 2389|
|Polyvinyl chloride (PVC) |
|ASTM D 1785; ASTM D 2241|
|Raised temperature polyethylene |
|ASTM F 2623; ASTM F 2769|
|Steel pipe||ASTM A 53; ASTM A 106|
|Steel tubing||ASTM A 254|
Hydronic pipe fittings shall be approved for installation with the piping materials to be installed, and shall conform to the respective pipe standards or to the standards listed in Table 1202.5.
HYDRONIC PIPE FITTINGS
|MATERIAL||STANDARD (see Chapter 15)|
|Brass||ASTM F 1974|
|Copper and copper alloys||ASME B16.15; ASME B16.18; |
ASME B16.22; ASME B16.23;
ASME B16.26; ASME B16.29
|Ductile iron and gray iron||ANSI/AWWA C110/A21.10|
|Ductile iron||ANSI/AWWA C153/A21.53|
|Gray iron||ASTM A 126|
|Malleable iron||ASME B16.3|
|PEX fittings||ASTM F 877; ASTM F 1807; ASTM F 2159|
|Plastic||ASTM D 2466; ASTM D 2467; |
ASTM D 2468; ASTM F 438;
ASTM F 439; ASTM F 877; ASTM F2389; ASTM F 2735
|Steel||ASME B16.5; ASME B16.9; |
ASME B16.11; ASME B16.28;
ASTM A 420
Joint surfaces shall be clean and free of moisture. An approved primer shall be applied to CPVC and PVC pipe-joint surfaces. Joints shall be made while the cement is wet. Solvent cement conforming to the following standards shall be applied to all joint surfaces:
- ASTM D 2235 for ABS joints.
- ASTM F 493 for CPVC joints.
- ASTM D 2564 for PVC joints.
CPVC joints shall be made in accordance with ASTM D 2846.
Exception: For CPVC pipe joint connections, a primer is not required where all of the following conditions apply:
- The solvent cement used is third-party certified as conforming to ASTM F 493.
- The solvent cement is yellow in color.
- The solvent cement is used only for joining 1/2 inch (12.7 mm) through 2-inch (51 mm) diameter CPVC pipe and fittings.
- The CPVC pipe and fittings are manufactured in accordance with ASTM D 2846.
Pipe insulation installed in buildings shall conform to the requirements of the International Energy Conservation Code; shall be tested in accordance with ASTM E 84 or UL 723, using the specimen preparation and mounting procedures of ASTM E 2231; and shall have a maximum flame spread index of 25 and a smoke-developed index not exceeding 450. Insulation installed in an air plenum shall comply with Section 602.2.1.
Exception: The maximum flame spread index and smoke-developed index shall not apply to one- and two-family dwellings.
Shutoff valves shall be installed on the supply and return side of a heat exchanger.
Exception: Shutoff valves shall not be required when heat exchangers are integral with a boiler; or are a component of a manufacturer’s boiler and heat exchanger packaged unit and are capable of being isolated from the hydronic system by the supply and return valves required by Section 1005.1.
Hydronic piping systems shall be designed and installed to permit the system to be drained. Where the system drains to the plumbing drainage system, the installation shall conform to the requirements of the International Plumbing Code.
Exception: The buried portions of systems embedded underground or under floors.
Radiant floor heating systems shall be provided with a thermal barrier in accordance with Sections 1209.5.1 through 1209.5.4.
Exception: Insulation shall not be required in engineered systems where it can be demonstrated that the insulation will decrease the efficiency or have a negative effect on the installation.