Plumbing waste fittings
|Publication Date:||1 November 2006|
This is the first edition of ASME A112.18.2/CSA B125.2, Plumbing waste fittings.
This joint Standard was developed in response to an industry request for a Standard for testing plumbing waste fittings that would be acceptable in both Canada and the United States. Its coverage is restricted to plumbing waste fittings. Plumbing supply fittings located between the supply line stop and the terminal fitting are covered by ASME A112.18.1/CSA B125.1, Plumbing supply fittings. Devices not covered by this Standard or by ASME A112.18.1/CSA B125.1, e.g., temperature actuated in-line mixing valves and flexible connectors under continuous pressure, are covered by CSA B125.3, Plumbing fittings.
This Standard replaces ASME A112.18.2-2002, Plumbing Fixture Waste Fittings, and, together with ASME A112.18.1/CSA B125.1 and CSA B125.3, replaces CAN/CSA-B125-01, Plumbing Fittings.
The concept of harmonization for plumbing fittings arose in the early 1990s, when a free trade agreement between Canada, Mexico, and the United States began to be discussed. Standards development organizations (SDOs) were at the forefront of these discussions and an opportunity soon arose for those SDOs involved in setting requirements for plumbing products to establish a process for harmonization. However, the effort to develop a trinational Standard stalled until 2001, when ASME and CSA decided to develop a binational Standard for plumbing fixture fittings. Harmonization activities were undertaken by a Joint Harmonization Task Group (JHTG), in which the ASME and CSA plumbing fitting committees were equally represented. The responsibility for procedural matters and final approval of technical content was assumed by committees and teams at higher levels within each SDO. Initially, the JHTG's philosophy was to draft a Standard reflecting existing requirements in the applicable ASME and CSA Standards. This seemed a reasonable task, given that ASME and CSA had already been trying for many years to harmonize the requirements in their plumbing fitting Standards in response to constant requests for revision. There were only a few tests in the applicable ASME Standard that did not appear in its CSA counterpart, and vice versa (corrosion, swing spout strength, and intermittent shock, to name three). However, once the JHTG began to meet, its members realized that there was room for improvement in how both Standards dealt with current products and technologies. It was therefore agreed that the new Standard would not only harmonize the requirements of both existing Standards but also improve on them. The design requirements of this Standard, however, are generally similar to those of the Standards it replaces, which is understandable considering that plumbing waste fittings perform basically the same functions now that they did when the Standards being replaced were first developed.
This Standard was prepared by the ASME/CSA Joint Harmonization Task Group on Plumbing Fittings, under the jurisdiction of ASME Standards Committee A112 on Plumbing Materials and Equipment and the CSA Technical Committee on Plumbing Fittings. The CSA Technical Committee operates under the jurisdiction of the CSA Strategic Steering Committee on Plumbing Products and Materials. This Standard has been formally approved by ASME Standards Committee A112 and the CSA Technical Committee. ASME A112.18.2-2005 was approved as an American National Standard by the American National Standards Institute on February 14, 2005. CSA B125.2 will be submitted to the Standards Council of Canada for approval as a National Standard of Canada.