220 CMR, § 112.61
Current through Register 1538, January 3, 2025
Piping made of cast iron, malleable iron, ductile iron, copper, or copper alloys, may not be used to carry cryogenic or hazardous fluids, except that copper or copper-alloy tubing and piping two inches or less in diameter and installed as of September 14, 1990, may be used to carry cryogenic or hazardous fluids.
220 CMR, § 112.61