Zoeller 30-0021
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<b>[Product Information]</b><br>
<ul>
<li>Prevents back flow of water and sewer gas</li>
<li>Full flow</li>
<li>Extra wide flapper hinge prevents hinge stress</li>
<li>Vertical or horizontal line</li>
<li>Slips over ABS, PVC, steel or copper pipe</li>
</ul>
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