I think if you look in the Yellow Manual (no longer yellow) you will find
galvanized is not allowed before the backflip preventer.
On Mon, Jul 31, 2017 at 7:46 AM Dewayne Martinez <
dmarti...@total-mechanical.com> wrote:
> Wisconsin requires when using steel pipe on the potable water side of the
Wisconsin requires when using steel pipe on the potable water side of the
backflow preventer that it be ASTM A53 galvanized. Does ASTM A53 only come
in Sch 40?
Thanks,
Dewayne
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