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These corrosion-resistant Duco-coated cast iron sewer backwater valves protect basements and other low areas against wastewater back flow from street sewers. Two cleanout cover options are available, one bolted and one threaded. They fully open to permit easy access to the bronze valve assembly for cleaning or maintenance.
SMITH® 7012 Series 7012Y04 Sewer Backwater Valve, 4 in