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Backwater Valve A backwater valve is a device that prevents sewage in an overloaded main sewer line from backing up into your basement. The valve automatically closes if sewage backs up from the main sewer. A properly installed backwater valve must be placed so that sewage backup will be stopped and not come out through other outlets in your basement, such as sinks, toilets, showers, and laundry tubs.
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LIFE | BUSINESS | HOMEOWNERS | AUTO | Ask the Insurance Guy |
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