On 11/20/2011 7:39 AM, Andy wrote:
On Nov 20, 9:25 am, "Stormin Mormon"
wrote:
I thought the check valve is to keep water from coming back
in (backwards) via the discharge pipe. I think you may be
thinking about a foot valve, in a drilled well?

Andy answers:
A question of terminology..... Both do the same thing --- a valve
that
allows matter to flow in one direction.
In my experience, a "foot" valve is often mated with a screen and a
"check" valve is simply inserted in-line...
If JoeJ's pumps are both submersible, I can't see where either
could
be used..... Perhaps I am missing something, since the submersibles
I have used don't have a convenient place to add either one......

I'd be happy to get information on my error.....

Andy in Eureka, Texas PE






it is installed on the discharge side to prevent the contents of the
riser pipe from dumping back into the sump. And no, a foot valve is not
the same as a checkvalve on the discharge side. A foot valve is used on
the suction side and IS in fact there to keep the pump primed, in the
case of a well pump (or any other pump for that matter) that is above
the water line.


--
Steve Barker
remove the "not" from my address to email