I just installed a Back Flow Preventer, into a sewer hole, in my
basement, its 4 inches in Diameter and fits snug, my only problem is,
is I plan on laying carpet down and after installing this tight fit
item, The spring that allows the plunger to close incase of a back up
sits higher then the the floor with no room to push it down, is this
normal? and would it sill work if I laid carpet right over it? because
of the way its sitting, it could easily be stepped on...

Any Help would be appreciated..
Thank You

Rob
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