How Much Air Pressure Should Be In My Water Tank

So for example with a 30 50 pressure switch factory default setting air pressure in the tank will equal 28psi.

How much air pressure should be in my water tank. This differs depending on your tank s pressure settings. If your tank is in an elevated area calculate the ideal pressure by multiplying the height in feet by 0 433 h x p psi. Typical factory set air pressure on a bladder type residential well water tank is 18 psi. Well x trol water pressure tanks are shipped from the factory with a standard precharge of 18 psig for models wx 101 and wx 102.

Locate the pressure switch limits which are located inside the pressure switch cover. This should be enough pressure to use all of the water that the tank can hold. Prior to operation with the tank empty of water the pressure should be 2psi below the cut on pressure. The pressure in the pressure tank should be 2 psi less than the cut in pressure for the pump.

If you do not know the pressure switch setting of your system look for a pressure gauge installed near the tank. Psi and 40 to 60 lbs psi. If the pressure switch is adjusted to 40 60 the cut on pressure will be 38psi. According to well x trol bladder type well tank air precharge.

Some models may come with different pressure settings however. For example if the pump cut in pressure is 30 psi the tank bladder pressure should be 28 psi. Air can be added with a compressor or bicycle pump. Replace protective air valve cap.

The lower number is the turn on point for the tank to bring in more water and the higher number shuts the pump off. Procedure for setting well bladder pressure every pressure tank has an air valve similar to the one on a car or bicycle tire. 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. If your well tank is on a 40 60 pressure switch your pressure setting should be 38 psi.

Then use a low pressure tire gauge to bring the air pressure to 7 8 pounds of pressure with the tank emptied of water. Release or add air as necessary to make the pressure 2 psi below the pressure switch pump cut in setting. Most well tanks come set at 30 50. Check the pressure each time that you change your filters and the tank should last for many years.

Pressure switch limits are different on different types of pressure tanks such as 20 to 40 lbs psi 30 to 50 lbs. Check pressure in the tank with your pressure gauge. Cover the water pump pressure switch adjustment when you re done and then turn on the power.