Well Bladder Tank Pressure Setting

In a well system with a bladder style pressure tank the well bladder pressure should be 2 psi lower than the cut in pressure for the well pump.

Well bladder tank pressure setting.

The three pressure switch settings for pressure tanks are 20 40 30 50 and 40 60. Use a car tire pressure gauge to measure pressure. Psi and larger ones have 38 lbs. Well x trol water pressure tanks are shipped from the factory.

This will let some air out and it will also tell the pressure in the tank. Lower this pressure by allowing the gauge to release air from the tank. Keep in mind the drawdown will change based on the pressure of the tank. The pressure switch setting is the pressure at which the pump turns on to fill the tank up and the pressure at which the pump shuts off knowing the tank is full.

All new tanks come with a certain level of pressure already in the tank. Typical factory set air pressure on a bladder type residential well water tank is 18 psi. So for example with a 30 50 pressure switch factory default setting air pressure in the tank will equal 28psi. If the pressure switch is adjusted to 40 60 the cut on pressure will be 38psi.

If your tank s bladder has failed reassess the drawdown capacity of your tank and make sure you have a tank that can support your pressure settings and well pump. The small and medium tanks have 28 lbs. Factory air pressure settings in the water pressure bladder tank. Some models may come with different pressure settings however.