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replacing jet well pump

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replacing jet well pump richandellen 09-09-2007
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Posted by on September 9, 2007, 6:52 am
I have no details on my current pump..
I have no information about the depth of the foot valve but the well
is 175 feet deep..
My question is if a pump is rated up to 90 feet deep what happens if
you exceed that depth?
I assume that all pumping doesn't stop if you are at a depth of 95
feet for example.
Rich


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Posted by Edwin Pawlowski on September 9, 2007, 7:36 am

>I have no details on my current pump..
> I have no information about the depth of the foot valve but the well
> is 175 feet deep..
> My question is if a pump is rated up to 90 feet deep what happens if
> you exceed that depth?
> I assume that all pumping doesn't stop if you are at a depth of 95
> feet for example.
> Rich
>

The pump will give you less water as it gets deeper since it has to work
harder. Pumps usually have a rating of X pressure at a certain head height.
A pump that gives you 12 gallons per minute at 5 feet may give you 10 at 25
feet (at the same pressure)

Go to www.grainger.com and search for well pumps for some specifications.



Posted by RBM on September 9, 2007, 7:41 am
If you have a jet pump, it must be a double line type, which has the venturi
down in the well as single line jet pumps only work in shallow wells. If you
replace the pump, just leave the venturi where it is. Personally, I'd
replace the whole setup with a submersible


>I have no details on my current pump..
> I have no information about the depth of the foot valve but the well
> is 175 feet deep..
> My question is if a pump is rated up to 90 feet deep what happens if
> you exceed that depth?
> I assume that all pumping doesn't stop if you are at a depth of 95
> feet for example.
> Rich
>



Posted by Pete C. on September 9, 2007, 11:12 am
RBM wrote:
>
> If you have a jet pump, it must be a double line type, which has the venturi
> down in the well as single line jet pumps only work in shallow wells. If you
> replace the pump, just leave the venturi where it is. Personally, I'd
> replace the whole setup with a submersible

Second that. Jet pumps are ok for shallow wells, but submersibles are
better for deep wells. With the two pipes you currently have, one gets
reused as conduit for the electrical wires to the new submersible pump
and the other of course for the water. Easy conversion and you no longer
listen to the jet pump whirring in the basement.




>
> >I have no details on my current pump..
> > I have no information about the depth of the foot valve but the well
> > is 175 feet deep..
> > My question is if a pump is rated up to 90 feet deep what happens if
> > you exceed that depth?
> > I assume that all pumping doesn't stop if you are at a depth of 95
> > feet for example.
> > Rich
> >

Posted by John Gilmer on September 9, 2007, 1:28 pm


> Second that. Jet pumps are ok for shallow wells, but submersibles are
> better for deep wells. With the two pipes you currently have, one gets
> reused as conduit for the electrical wires to the new submersible pump
> and the other of course for the water. Easy conversion and you no longer
> listen to the jet pump whirring in the basement.

Would "they" really bother to use the "down" pipe for conduit?

Most "pump guys" just keep a BIG roll of 10-3 w/ground on the truck. The
wire doesn't need conduit.
>
>
>
>
>>
>> >I have no details on my current pump..
>> > I have no information about the depth of the foot valve but the well
>> > is 175 feet deep..
>> > My question is if a pump is rated up to 90 feet deep what happens if
>> > you exceed that depth?
>> > I assume that all pumping doesn't stop if you are at a depth of 95
>> > feet for example.

Maybe.

Usually, at the "fringers" of the service envelop of a particular pump, the
maker (or someone else) has a pump that centers on that same point. Unless
you have already spent the money it pays the get the optimum pump for your
needs.



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