Adding an accumulator tank

drsteve wrote:

Bobbo wrote:

Dusty R wrote:

Bobbo wrote:
I want the accumulator tank set about 2 pounds above the cut-on pressure of the pump. That way, the accumulator tank will completely empty before the pump cuts on. Since the cut on pressure can be set on at least some of the pumps, it can vary. You may have to check the documentation for your pump to find that number. (If you don't have the tank completely empty before the pump cuts on, you are effectively reducing the volume of the tank.)

I think that you mean 2 lb below cut-on/turn on, pressure, set at 2 lb above the pump will never turn on.

Dusty

No, I meant what I said. For example, if the pump cuts on when the pressure is 18 psi and cuts off at 55 psi, I would set my tank at 20 psi. As soon as the tank empties itself, it no longer exerts any effect at all on the water lines and the pressure will continue to drop, all the way to zero if the pump is turned off. Note that these are example numbers and not to be used to set anyone's tank.

A bladder tank should be set 2 psi below the pump cut in pressure.