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Glam Journal

What should the air pressure be in a bladder tank?

Author

Emily Wilson

Updated on April 05, 2026

What should the air pressure be in a bladder tank?

The air pressure should be 2 psi below the start pressure setting of the pump. 5. Use an air compressor to charge the tank to the proper pressure.

What is normal psi for well pressure tank?

between 40 and 60 psi
Normal well water pressure should fall between 40 and 60 psi, so if your pressure is outside the normal range, adjust the pressure switch.

What should the pressure be at the top of the tank?

Release or add air as necessary to make the pressure 2 psi below the pressure switch pump cut-in setting. For example, if you have a pressure switch setting of 30/50 psi, you pressure measured at the top of the tank should read 28 psi. Air can be added with a compressor or bicycle pump. Replace protective air valve cap.

How to tell if your water pressure tank is bad?

Second, you have a bad pressure tank. Turn the power to the well off, drain all water from the tank, and then check the air in the bladder. It should be 2 psi below the cut-in pressure of the pressure switch (38 psi for a 40/60 switch).

How does the pressure in a bladder tank change?

A few simple steps help you check this vital system component. A bladder pressure tank contains pressurized air and water separated by a flexible membrane (bladder). These tanks are typically precharged with air at the factory. As water pressure changes, the volume of air in a bladder tank contracts and expands.

What happens if you use high air pressure on water tank?

Watch out: do not attempt to use high air pressure at the water tank’s air adjustment valve to force water out of a water pressure tank that uses an internal bladder. Doing so can rupture and destroy the bladder and worse, it can burst the water tank injuring or even killing a bystander.

Release or add air as necessary to make the pressure 2 psi below the pressure switch pump cut-in setting. For example, if you have a pressure switch setting of 30/50 psi, you pressure measured at the top of the tank should read 28 psi. Air can be added with a compressor or bicycle pump. Replace protective air valve cap.

Second, you have a bad pressure tank. Turn the power to the well off, drain all water from the tank, and then check the air in the bladder. It should be 2 psi below the cut-in pressure of the pressure switch (38 psi for a 40/60 switch).

Watch out: do not attempt to use high air pressure at the water tank’s air adjustment valve to force water out of a water pressure tank that uses an internal bladder. Doing so can rupture and destroy the bladder and worse, it can burst the water tank injuring or even killing a bystander.

A few simple steps help you check this vital system component. A bladder pressure tank contains pressurized air and water separated by a flexible membrane (bladder). These tanks are typically precharged with air at the factory. As water pressure changes, the volume of air in a bladder tank contracts and expands.