The install is straightforward and doesn't require advanced plumbing skills, but if the unit is to be connected to a dishwasher, a knockout plug in the disposal must be removed first. If there's ...

The knockout plug is a piece of plastic in the disposal ... It's best to call a professional plumbing service if you suspect this is the case, as you likely need to uninstall the disposal ...

Knockout plug issues are most likely to occur if your ... just one of the many problems that can arise from aging or faulty plumbing. Pipes that are outdated and damaged can cause drainage issues ...