AC247 Backwater Valves—Approved February 2004 (PDF Download)
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AC247 establishes guidelines for evaluation of backwater valves installed in building drain or sewer pipe to prevent backflow of sewage in buildings where the flood-level rim of a plumbing fixture is below the elevation of the manhole cover of the next upstream manhole in the public sewer.
| Description: | AC247 establishes guidelines for evaluation of backwater valves installed in building drain or sewer pipe to prevent backflow of sewage in buildings where the flood-level rim of a plumbing fixture is below the elevation of the manhole cover of the next upstream manhole in the public sewer. |
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| Pages | 3 |
| Code Year | - Other - |
| Publisher | ICC-ES |
| Language | English |