Mark P Posted January 16, 2008 Report Share Posted January 16, 2008 House built in 1947, public water, public sewer. The large screw valve on the floor does not seem to do anyting except rotate. The picture is dark, but the floor had been dug up around the valve and the cement replaced, si it may not have been orginal. This is in the basement on the front side of the house, just uner the main water shut off valve. So what do you think it is. Image Insert: 49.31 KB Image Insert: 26.82 KB Quote Link to comment Share on other sites More sharing options...
hausdok Posted January 16, 2008 Report Share Posted January 16, 2008 A gate valve on the main sewer line maybe? OT - OF!!! M. Quote Link to comment Share on other sites More sharing options...
kurt Posted January 16, 2008 Report Share Posted January 16, 2008 Exactly. When the city sewer backs up during a hard rain, you run down & spin the valve shut so sewage doesn't back up through the floor drain. Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted January 16, 2008 Report Share Posted January 16, 2008 Originally posted by kurt Exactly. When the city sewer backs up during a hard rain, you run down & spin the valve shut so sewage doesn't back up through the floor drain. That's what I thought. If that's the case, it might be wiser to install a backwater valve there. - Jim Katen, Oregon Quote Link to comment Share on other sites More sharing options...
Mark P Posted January 16, 2008 Author Report Share Posted January 16, 2008 Wow! You guys are my heros. Thanks. Quote Link to comment Share on other sites More sharing options...
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