7.2.10.6.Valves, Supply and Waste Fittings

(1) Supply fittings shall conform to
  (a) ASME A112.18.1 / CSA B125.1, “Plumbing Supply Fittings,” or
  (b) CSA B125.3, “Plumbing Fittings.”

  (2) Except for lavatories in healthcare facilities, emergency eye washes, and emergency showers, supply fittings and
  individual shower heads shall have an integral means of limiting the maximum water flow rate to that specified in Table
  7 .2.10.6. (See Note A-7.2.10.6.(2))

                                                           Table 7.2.10.6.
                                                Water Flow Rates from Supply Fittings
                                                 Forming Part of Sentence 2.2.10.6.(2)

                                      Supply Fittings                                       Maximum Water Flow Rate, LPM
       Lavatory supply fittings
           private                                                                                        5.7
           public                                                                                         1.9
       Kitchen supply fittings (except those in industrial, commercial or institutional                   8.3
       kitchens)
       Shower heads                                                                                       7.6

  (2.1) Sentence (2) does not apply to a fixture located in a heritage building.

  (3) Reserved.

  (4) Reserved.

  (5) Reserved.

  (6) Waste fittings shall conform to ASME A112.18.2 / CSA B125.2, “Plumbing Waste Fittings.”

          (7) Manually operated valves of NPS 4 or less for use in plumbing systems shall conform to ASME A112.4.14 / CSA
          B125.14, “Manually Operated Valves for Use in Plumbing Systems.” (See Note A-7.2.10.6.(7))

This provision includes a table — formatting is preserved from the source; refer to the official code for the authoritative layout.

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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.