7.2.6.5.Screwed Cast-Iron Water Fittings

(1) Screwed cast-iron water fittings shall conform to ASME B16.4, “Gray Iron Threaded Fittings: Classes 125 and
  250.”

  (2) Screwed cast-iron water fittings used in a water system shall be cement-mortar lined or galvanized.

  (3) Screwed cast iron water fittings shall not be used in a drainage system.

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Code text is reproduced for reference from the Ontario Building Code (O. Reg. 163/24, 2024 Building Code Compendium). This page is provided for general information and is not an official copy. Always verify requirements against the official Ontario Building Code and confirm with your local building department.