ASME A112.19.2 is the standard for Vitreous China Plumbing Fixtures and Hydraulic Requirements for Water and Closet Urinals. This standard establishes requirements and test methods pertaining to materials, significant dimensions and functional-performance for vitreous china plumbing fixtures. The sanitary performance requirements and test procedures apply to all types of water closets and urinals that discharge into gravity waste systems. The following are the tests that are required.
Water Closet Tests |
| 1. General - General tests are conducted to determine if the toilet operates per the manufacturer instructions. Flushing performance is evaluated. |
| 2. Trap Seal Depth Determination - The full trap seal depth is calculated and reported. It cannot be less than 2 in. (50 mm). |
| 3. Trap Seal Restoration - The residual trap seal value is calculated and reported for each flush.The residual trap seal must be restored after the required flushes. |
| 4. Water Consumption - Tests are conducted to measure the flush volume and average flush cycle time. |
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5. Granule and Ball Test - Flushing performance is tested via flushing granules and nylon balls. After each initial flush no more than 5% of each, granules and nylon balls, can remain visible.
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6. Surface Wash Test - Ink is used to test the washability of the toilet surface. The total length of an ink line at "below the rim holes after each flush shall not exceed 2" average over three test runs and no individual segment shall be longer than 1/2".
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7. Mixed Media With Neutrally Buoyant Wastes - Flushing performance is tested via flushing sponges and paper balls.
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8. Drainline Transport Characterization Procedure - Tests are conducted to measure the average weighted carry distance. The results must be 40 ft (12.2 m) or greater.
9. Overflow Test for Gravity Tanks - Tanks are test for water leakage or discharge. No leakage or water escaping from the fixture is permitted.
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