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P2911.8.2 Backwater Valve
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Backwater valves shall be installed on each overflow and tank drain pipe. Backwater valves shall be in accordance with Section P3008.
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Storm drainage systems shall be provided with backwater valves as required for sanitary drainage systems in accordance with Section 714 ...
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Plumbing Code 2018 of Kansas > 13 Nonpotable Water Systems > 1302 On-Site Nonpotable Water Reuse Systems > 1302.8 Valves > 1302.8.2 Backwater Valve
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Residential Code 2018 of Kansas > 29 Water Supply and Distribution > P2911 On-Site Nonpotable Water Reuse Systems > P2911.8 Valves > P2911.8.2 Backwater Valve