|Posted by Douglas Munn on May 27, 2001 at 14:46:10:|
We have a sewage injector for our downstairs bathroom. Whenever it starts up, it seems to pump the liquid into the sewer line above, then there is a loud "thump". Also, the "thump" causes the upstairs toilet to "burp", you don't want to be sitting on the upstairs toilet.
-- The downstairs bathroom line and the injector vent both go into an octopus that is below the upstairs toilet.