These holding tanks are pre charged with air which in turn pressurizes the water. The tank has a bladder and an air valve on top. The pre charge ,over time, loses pressure, and the tank has to be pressurized again.

• The well pump needs to be turned off.
• The water has to be drained from the tank
• Air is put into the tank from the air valve on top of the tank, and is measured with a tire air gauge.
• The pre charge pressure is set to two psi below the pump cut in pressure.
• In other words if your pump kicks on at 30 psi, the pre charge pressure is set at 28 psi. If the pump kicks in at 20 psi, the pre charge is set at 18psi, etc.
• After you pressurize the tank, turn water back on.
• If water comes out of air valve on top of tank, then the bladder is ruptured and you need a new tank.
• Hope this helps!

Both wrong galvanized tanks are the only tanks that needed to have air introduced to them over time due to the fact that they did not have a bladder.all new tanks out on the market have bladders very few of them are replaceable most of them you have to replace the entire tank.... trust me I've been doing plumbing for 20 years hmasters licenses.in addition you do not want to ignore the short cycling issue at this point the pump tank is not working and your pump is providing all your pressure short cycling will burn out the motor

If the bladder is ruptured it can be replaced- don't need a whole new tank.