On Mon, 12 Mar 2007 14:19:20 -0700, "dan2590 wrote:

On Mar 12, 3:33 pm, " wrote:
You know the vibration excess noise could all have one CAUSE!

What if the dischgarge line is somehow blocked?

Then the discharge water pressure back makes the check valve bang when
pump shuts off?

Creates your new vibration noise?

If I were you I would connect a garden hose to the discharge line to
make certain it passes water easily!

Or one day it may stop completely and flood your basement


I did think of that. I'm "tellling myself" that's not the case since
when I took the check valve out to assess the situation last night,
some water obviously came down out of the blank PVC end, but not an
inordinate amount. I'm assuming that given the PVC travels up the
wall and then bends and goes up one more time, that area will have
some water post-cycle in it...that's about how much came out.

Anyway, I was telling myself that, and assumed there'd be some obvious
answer here on these boards or on the internet somewhere. That is
obviously not the case, and I'm beginning to think I need to hire a
plumber to assess the situation. It wasn't this way before, so
something somewhere is messing with my previous state of happiness.
Thanks for your thoughts!

I gave you the answer. did you not see my post? I went through great
lengths to rid myself of that noise and in the end it was just the pipe
attachment. And now that you have a new pump, which I bet is stronger,
your pipes are going to work themselves loose that much faster if you dont
tighten them down snugly.


Its not the check valve, its the pressure drop. The pressure increase
caused by the water flowing in reverse and closing the check valve is
nothing compared to the pressure drop when that pump shuts off. I bet you
can see your pipes flex when the pump kicks on in certain places.

go ahead and remove the valve and see what happens. Let us know.

Presently I have 0 noise and a much stronger pump too. I would post
pictures but I dont think newsgroups take em.