rdmpe
New member
I don't think it will work then. The whole point of this system is to have no air into your pipe. If the emergency drain is connected to your functioning main drain, it will allow air in.
Also, if your drain gets clogged below where they join, then you don't have an emergency drain any more and your tank could flood. Though I suppose that isn't likely since you will join them below the valve...
Also, if your drain gets clogged below where they join, then you don't have an emergency drain any more and your tank could flood. Though I suppose that isn't likely since you will join them below the valve...