I had my plumber change my disposal on my double sink from one side to the other. He hooked the air gap to the sink drain pipe of the non-disposal side instead of the disposal itself (he says that hooking it to the disposal can ruin the disposal?). When I run the dishwasher, the air gap flows at least four times and water flows into the sink, as well as under the sink. I live in a very rural area, but have a very advanced septic system, so he's saying I don't really need the air gap. His solution is to unhook the air gap (not code required in my area). Questions from an unfortunate "non-do-it-yourselfer":
- Is he correct in saying that it's not needed?
- Is he correct in hooking it to a drain pipe instead of the disposal?
- Is he correct in saying that it could effect the disposal in the long run?
- If I have him hook it to the disposal and run the disposal before using the dishwasher, will this fix the flood under my sink? Can I do this myself? If so, can someone explain "plumbing 101"?
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