Quote:
Originally Posted by marks69
i went with 2 on my tank. both can be cleaned easily, and get done every couple of months. i figure it's part of my insurance.
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Why wouldn't you leave enough room in the sump to take the back flow? To me that is much better insurance...it's fail safe.
Quote:
Originally Posted by daveycoopa
What is a flapper valve? Never heard of one.
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It's a type of check valve. It's supposed to prevent back flow of water during a power outage.