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Not that It seems that this thread is getting many hits, but to add to my questions above-does it matter how close I put the check valve to the chlorinator? The pool store guy that gave it to me to replace the old one said it should be about a foot away. Mine was only a few inches. For...

Oh and what would happen if the chlorinated water was allowed to back up into the filter for too long? A manager-sh guy at the pool store told me that worse comes to worse it would eat at the seal in the filter head and be a $50 fix. Not that I want that, but is this accurate? For reference, I...

will the flow be good enough though?

Hello All, So I put an inline chlorinator into my system last year-above ground 21 foot round pool. At the end of the season last year after only a few months, I found that my check valve had failed and it was letting the chlorine go back into the filter. I went back to the pool store and they...