Pump recommendations for restricted flow

[dieselfuelonly]

I have to replace my well seal and make some other updates and fixes in my well house and am considering replacing my pump of unknown age and condition while I'm at it.

Pump is currently a 240v 3 wire 1/2hp located around 200ft deep. Static water level in the well is around 50ft, the well recovers extremely slowly, I currently have a setup with a 0.75gpm dole valve and a 500 gallon storage tank. The water level changing rapidly in the bore with a standard pump/pressure tank setup caused me lots of issues with sediment, so keeping the flow restriction is pretty much necessary.

Prefer 3 wire as I've had a start capacitor fail and not having to pull the pump was nice. But would consider a 2 wire pump too.

Looking for recommendations on a replacement pump. Mainly looking for something that will happily handle the 0.75gpm restriction, Id like to try reducing it to 0.5gpm if possible but I don't know if that would be sufficient for cooling.

Thanks

 

[Reach4]

I have no pump suggestion for you.

How big is your well diameter? If 5 inch, you should use a flow inducer sleeve.

It is also possible that efforts to remove accumulated sediment would be worthwhile. An air lift pump can raise water and sediment as long as you have more of the pipe under water. If you could filter out the sediment and return the water, no danger of running dry during that operation.

Similarly, you could use a regular submersible pump forcing water thru a cartridge filter, and return the filtered water back to the well.

I am thinking maybe a 4.5x20 washable pleated filter could be good. I don't know if these are any good: https://www.ebay.com/itm/184888754733 Way cheap.

There is also a procedure where you use a big engine-driven compressor shoving air thru 1 inch pipe to create a geyser of sediment and water.

Nice warm weather activity.

 

[Sponsor]

 

[FredG]

A 7S03-8, or a 10s05-9 would work best if you are content with pumping into a cistern from 200ft. Although I would personally stick with the pump you have now, which will probably outlast anything new you would put in there.

 

[Valveman]

As was said, the pump you have now or a new 1/2HP is the best you can do for that flow rate. 1/2 GPM is pretty low flow to keep the motor cool so a flow sleeve would help greatly. You might also consider an air lift pump because of the low flow and sediment.

 

[Fitter30]

Call a pump manufacturer of your choice and ask them for a recommendation. They should know about cooling of the motor versus gpm with your dole valve. Dole valve is above grade for service?

 

[Valveman]

I think it is funny that the same pump manufacturers who say it is perfectly fine to use a 1 GPM Dole valve with their pumps will also say the back pressure from a Cycle Stop Valve restricted to 1 GPM will destroy pumps. Makes it pretty obvious pumps will work fine at 1 GPM but they don't want you to use a Cycle Stop Valve to stop the cycling because that will make the pump last much longer. Lol!