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BillyD 06-18-2008 05:54 PM

Shallow Well Pump
 
Greetings,
Will a shallow well one pipe pump pull water up approx. 6 feet from a distance of 30 feet. We are trying to figure what to use (in a cheap way )
to get water from a in ground tank to the barn. We want to put the pump in the barn to supply power and keep it dry.We should not need a jet pump correct?
Thanks
BillyD

Bondo 06-18-2008 08:16 PM

Ayuh,...

It'll work with a foot valve at the tank...

micromind 06-18-2008 09:24 PM

I don't know how many basic one-pipe centrifugal pumps I've installed on top of concrete cisterns, but it's alot. These are not jet pumps, the suction is in the center, you can see the center of the impeller looking into the suction fitting. They'll pull water from about 20' down, but flow drops off a bit.

I've always put the check valve at the bottom of the suction pipe, it's actually called a foot valve, and it has a screen built in to it. If you use galvanized pipe for the suction, it'll bang pretty loud when the pump stops. I use schedule 80 PVC. Never had a problem with it, and it doesn't bang much. Schedule 40 PVC might be OK, but I'd be worried that the shock of the check valve closing would break it.

You'll need a way to prime the pump, this is an easy one. If the discharge is up, screw a short nipple into the pump, then a tee. Use the side of the tee for the output, and screw a bushing into the top (pointing up) of the tee. Make this bushing whatever the tee is by 1/4" Screw a pressure gauge into the 1/4" part. To prime the pump, simply unscrew the bushing, and pour water in until you can see it down in the nipple. Screw the bushing back in, and start the pump. A straight centrifugal pump will not pump anything unless it is full of water.

If the suction pipe runs horizontal, it must be graded upward toward the pump. Any high or low spots will trap air, and cause the pump to lose its prime.

Don't run a pump like this dry, it'll ruin the shaft seal in just a few seconds.

Rob

BillyD 06-19-2008 08:25 AM

Thanks for the help.


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