Adding an accumulator tank

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

Sorry, but Bobbo is right, the accumulator tank bladder pressure should be set slightly higher than the pump cut-in pressure, so the tank will completely empty just before the pump kicks on. If the bladder pressure is set below cut-in, the the pump will kick in before the tank empties.