To determine the proper size of the pressure tank there are three factors to consider.
Well pressure tank size needed.
Most private home well systems operate between 30 pounds per square inch psi and 50 psi.
Naturally the larger the pressure tank is in size the more water it can hold without re engaging on the pump.
Pump flow rate in gallons per minute gpm 2.
Most pressure tanks are evaluated by their draw down capacity which is how much water can be kept in the tank before the pressure is at a point low enough to turn the pump on again.
Minimum runtime multiplying the flow rate by the minimum runtime of the pump will give you the drawdown capacity.
Understand that most pressure tanks are rated by the draw down capacity.
Your flow rate is how many gallons per minute your pump produces.
To properly size your well pressure tank you need to know three things.
How do i size a well pressure tank.
It s important that the size of a tank is adequate for your.
Water pressure tanks store water that s pumped from a well and dispense water under pressure when you use faucets and other fixtures.
Desired run time of the pump 3.
The pump turns on when the system reaches the low pressure cut in and off when the high pressure cut in.
Cut in and cut out psi pounds per square inch of the pressure switch.