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Sioux Chief 803-4PK2 is a backwater device designed for drainage systems. This valve keeps water from backing up through drain fixtures. It installs vertically into drainage pipes and allows free drainage during normal conditions. During backflow situations, the float seals the valve, preventing water backup.
This backwater device provides essential protection for plumbing systems against backflow events.
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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