01:04PM | 04/12/07
Member Since: 04/11/07
1 lifetime posts
I have a well on my property that was poorly installed. I want to reposition the pump and tank before they fall over. Also the well has a 1/2 horse pump on it now. I have a 3/4 pump that I would like to put on. My cocerns are if I disconnect the pump will I lose the prime.Also would I need to recharge the air pressure in the tank. Will the 3/4 horse pump increase water pressure to the house?


02:49PM | 04/12/07
Member Since: 04/25/05
1918 lifetime posts
The first thing is that the pressure is controlled by the pressure switch. Unless the current pump is not keeping up the pressure as you are using water putting a bigger pump on will not increase the pressure much. What you really need to do have a pressure guage installed and to monitor the pressure as as you draw water. You will see that the pressure drops to the start point and the stop point.

A pump with a higher horsepower MIGHT give you more pressure and to make use of it you might need to replace the pressure switch with a different one.

The best thing is is that if you can download the pressure curves of the pump or instructions that give the pressure at different flow rates.

If the pumps are of the same type they you will get higher pressure, but if they are of different types then you might not get much difference.

But if you have any kind of water filters or softeners they might be clogged and restricting the flow of water.

As to your question. Yes you will lose the prime so draw extra water before you start working on it.

If you have a shutoff valve between the tank and the pump then you can store water in the tank to reprime it.

If the tank has a bladder then it will not lose the air pressure when emptied.


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