Mike Lamb Posted May 9 Report Share Posted May 9 There were two of these odd raised floor drains installed in a 1950s basement home. I assume water would run under the flange? And I suspect some kind of anti-flood. Anybody? Quote Link to comment Share on other sites More sharing options...
Bill Kibbel Posted May 9 Report Share Posted May 9 That's a bell trap drain. The top of the flange should be flush with the floor surface. Maybe they drilled holes below the flange? Bell traps shouldn't be installed if it drains into a sanitary sewer. Quote Link to comment Share on other sites More sharing options...
Les Posted May 9 Report Share Posted May 9 what Bill said. Nice Flecto floor! Quote Link to comment Share on other sites More sharing options...
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