|Is an Overflow Standard From ANSI in Our Future?|
There have been rumblings around the industry that overflow systems on vanity tops, which are currently used in the United States at the discretion of the individual manufacturer, may at sometime in the future be subject to regulation. In the United States, under the ANSI Z124 standard, the need or flow rate of an overflow system is not regulated, but the Canadian CSA B45.5 standard does have a test for flow capacity of overflows. It is therefore a possibility that a new, harmonized standard would ultimately be adopted.
Gruber Systems' oval overflow tubing provides sufficient drainage capacity to meet such a standard. Our own internal testing of the oval overflow equipped systems delivered results varying from 3.9-4.4 GPM, comfortably over the rate mentioned in the CSA standard. However, the round overflow system may have difficulty in meeting this flow requirement.