Roger,
The pump has a check valve built in; the discharge side is just
connected to the main line. The city water connection should have a
check valve near it to prevent pump pressure from pushing all your water
overboard.
<<Jim>>
Roger Hakeman wrote:
>
> I have an early 62 Bambi that had some unfinished plumbing work done
> when I bought it. Whatever it originally had installed from the factory
> has been replaced with a slightly oversized poly tank. It was plumbed
> in at the fill pipe, and the city water is directly hooked up, but the
> poly tank and 12v pump out were never plumbed.
>
> My question is: how do you plumb the pump into the line? Is there some
> kind of backflow device that goes in both sides of the 'Y' supply, or is
> there a valve used, or what? How do you plumb both sides to work and
> prevent backflow into the other?
>
> Thanks!
>
> Roger Hakeman
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