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The Sioux Chief 869-3A is a three-inch ABS backwater valve designed for drainage systems. This valve is specifically used in horizontal drainage lines to prevent backflow. The stepped design of the valve provides a slope that promotes effective flow.
This backwater valve is essential for maintaining drainage integrity and preventing backflow in plumbing systems.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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