How Do I Get H2O Pressure At Top of a Hill

Multi-stage pumps.

Centrifugal pump - Wikipedia, the free encyclopedia

If the first pump is able to get water to the top of the hill, the second can be placed where most convenient (such as for wiring).

I believe you need to do your home work before you spend more money,knowing what you want to achieve is the first step but what needs to be known is how big is your pipe and how big is the pump.

That is very little lift and a short distance so you may have a break in the pipe or first pull of the discharge and check the flow.

If it is centrifical and in good condition or impellors not blocked or damaged you should have a good flow of water.

If not check the suction, check the pump inlet or pull the pump apart and check the impeller.

Simple things but may be the problem.

I have used pumps in tandam and one at a bore and one half way over a couple of miles to overcome friction loss.

Both gave heaps of trouble but the asset involved was leased so I would not upgrade to put in bigger mainline and a pump that actually would handle the job.

But decide what you are trying to achieve first and then get good advice , money spent wisely is money saved.

Thanks Guys, All your answers were very helpful. I will give them a try. John

GA. Most any small pump should be able to get a reasonable supply of water with good pressure at the height and run indicated. The smallest centrifugal is about 1/3 hp for domestic use and that should easily get you 10 gpm at 40 psi. I suspect if the piping is OK size wise, then there is a problem with a leak on the suction side. You may also want to check the venturi and ejector inside the pump if it is shallow lift. A small piece of debris caught in the venturi/ejector will stop suction. It is not likely an impeller problem but if the pump has been sucking off the lake bottom, it may be clogged. Some pumps have a small cleaning port for the ejector. You remove the plug and poke out the blockage away. Re-prime the pump after you have finished. It does not sound too serious and the fixes are usually simple. Google jet pumps and schematics. If you can't DIY then get a pump person to help.

You just add the pressure your irrigation lawn system requires to the performance pump. You have a short capacity pump, but if You add the pressure needed to irrigate your lawn to the performance pump capacity, usually given in feet, and the pressure has its own equivalent into feet of water column, You just need one larger pump than You have at this moment.

Of course, if You install another pump at the lake shore, and if They might be conneted in a serial configuration, i.e. discharge of one pump connected to the suction of the second one, You'll add pressure to the system, but having two motor, two controls, it looks like the expensive way to your pocket. For any option You may choose, You just have to consider the friction forces in the pipe, as the other fellow said.....

Just to add a few points apart from what excellently has been explained:

1. Ensure that the piping has a good amount of vertical delivery (Say, about 6 to 7 feet) immediately after pump and does not flat out horizontally. This will create less work for impeller on suction side.

2. Keep the suction side as minimal as possible and nearer to the water body.

3. If possible, check for proper fixing of impeller i.e., it has to have same rpm as that of the motor shaft and tighten if any slippage is found. This assembly is generally key-less and impeller is mounted on a tapered shaft, so tightening the nut should ensure the rotation.

Suggestions are based on assumption that you are using a centrifugal pump and have atleast 1/2 to 3/4 HP available.

Try a Karcher pressure pump at the end of the lline..

shoold work

Arthur

One additional comment.

If the sprinklers at the top of the hill and the bottom are both on at the same time, then the lower sprinklers will take the majority of water (higher pressure for the same period of time) relative to the sprinklers at the top of the hill.

well that depends on how you size the distribution system and valving, and how you lay the system out.

Yes both solution would work if pumps work in series! output from one is input to the other, so your head pressure is a sum of both head pressures.