Regulationcurrent
49 CFR 192.193
Valve installation in plastic pipe.
Current as of 2026-08-18 Government source
eCFR editorial compilationAuthoritative but unofficial
View source Each valve installed in plastic pipe must be designed so as to protect the plastic material against excessive torsional or shearing loads when the valve or shutoff is operated, and from any other secondary stresses that might be exerted through the valve or its enclosure.#