EXT wrote:

Your sewer lateral is only 2" and rises to the street sewer main? Sounds
like a real bad installation. In this area the sewer lateral is required to
be 5" in diameter minimum and to drain DOWN to the sewer main, which is
about 15 feet below the street.

That's fine for a relatively flat city, but in hilly parts of the
country where there are central sewers it is quite common for folks on
the downhill side of the street to have tanks and pumps to pump the
sewage up to the sewer main. Since the pumps are grinder types, 2" lines
are just fine.




"Kevin Ricks" wrote in message
. net...
I recently had to replace my sewage pump. The PO put in a PVC ball valve to
shut off the sewage when pump repairs are needed.
The PVC valve would not move and I broke the turn handle while trying.
....Why anybody puts PVC valve underground and expects it to work after a
week or 2 is a subject for another thread...
Luckily I did manage to replace the pump without shutting off the valve as
there was a check valve before the pump which held stuff back.
I would like to replace the PVC ball valve with a brass gate valve.
It's about 75 to 100' of 2" PVC pipe to the street with about 12-18" rise.
The valve located near the pump. I am not sure if its just the gravity
fed contents of the pipe or if I will continuously get stuff under
pressure from the main sewer line as well?
How can I block the line while cutting out the bad valve and gluing a
fitting for the new valve? I was thinking of some kind of balloon or air
bladder if such a thing exists for that purpose?
Thanks
Kevin