The challenge with fixing a bath tub drain with a plunger is that tubs have what are called “overflows” used to prevent tubs from flooding. The overflow’s job is to take water in the bath tub that exceeds the overflow height and dump it right back into the drain so your tub does not overfill. Problem is, this little guy prevents a plunger from working effectively because it creates a vacuum and pressure leak in the drain system and a plunger depends upon vacuum and pressure to function properly.
You’ll see how to fix this problem “MacGyver style” on the next page.
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