Draft Details

Designation:ASME A112.19.5 / CSA B45.15
Review start date:Mar 1, 2021
Review end date:May 1, 2021
Contact email:jeff.menard(at)csagroup.org
Draft Scope/Description:


This Standard covers spuds and flush valves for water closet bowls, tanks, and urinals.


The provisions of this Standard are not intended to prevent the use of alternate materials or methods of construction or design, provided any such alternate meets the performance criteria outlined herein.


In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the standard.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (nonmandatory) to define their application.


SI units are the units of record in Canada. In this Standard, the inch/pound units are shown in parentheses.

The values stated in each measurement system are equivalent in application; however, each system is to be used independently. Combining values from the two measurement systems can result in non-conformance with this Standard.

All references to gallons are to U.S. gallons.

For information on the conversion criteria used in this Standard, see Annex A.

You may comment on any section of this document by clicking the “Submit Comment” link at the bottom of the relevant section.