I had a back-flow preventer installed last fall. It works fine but I have a
question. There is usually about 1 inch of water inside the housing. When
I open up the inspection cover, it drains away but more enters after a short
while. My question is this: Is this normal? If not what do I do to
resolve the problem.
Depends on what it is, how it's assembled, and what the overall system
If not what do I do
You might start by putting together a clear, concise description of your
problem and a clear, concise phrasing of what you need to know. I suspect
it's a sump pump but that's a small part of what needs to be known.
-- How to Post to a newsgroup:
Sump Pumps 101:
Nowhere did I say anything about sump pumps. This is simply a back flow
preventer with a check valve. The valve is installed in the sanitary drain
about a foot and a half below the floor in the basement. There is a
box-shaped housing which goes over the top of the valve. There is an
inspection cover which can be unscrewed to check the operation of the valve.
No where did you say anything about a sanitary drain.
Anyhow, back to sump pumps. The backflow preventer is typically right
at the discharge line. It's in the sump crock, so it's not a big issue
if it leaks a bit.
How many times do I have to tell you, there is no sump pump. There was
never any sump pump. It is to stop the sanitary storm sewer from backing up
when there is heavy rainfall and the storm sewer is overloaded. If you
don't know what a back-up preventer is find some other poster to waste time
This is the first time you have stated what the "preventer" is for. I
have a "preventer" for my sump pump discharge, so you are at fault for
not stating clearly what kind of a "preventer" you have.
If you knew what it was, then no explanation would be necessary. If you
don't know what it was then you obviously have nothing to add to the thread.
Actually, it shouldn't be an issue, since the backflow preventer is in
the sump pump crock. You could make the sump pump discharge pipe go up
like an inverted J trap, and that would help reduce backflow.
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