Question about Utilitech 20-Gallon Vertical Pressure Tank LPT-20

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Tank air pressure

Should the tank air pressure be set before or after the water is in tank?

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Hi Chris...
Normally you set the air first.... but it can be done either way, just be sure that you have about 1/4 of your tank an air cushion, this stops the pump from cycling on and off to fast
Bud

Posted on Apr 28, 2013

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Bladder style pressure tank air pressure should always be set with no pressure on the water side. Best way to check the air pressure on an installed tank is to electrically turn off the pump, open a low lying nearby faucet to bleed off the water pressure, then check the air pressure.. Leave the faucet open when adding air, so the bladder can displace any water remaining in the tank. Set the air pressure @ 2 PSIG less than what the pressure switch is set at to turn the pump on. As a side note, before I start, I always push down on the tank air valve while the whole system is pressurized. If water comes out the air valve, the bladder is ruptured and a new tank is required. I also turn off the electricity to the water heater so as to not burn out an element, in case the top heater element becomes uncovered with water while I'm draining the pressure tank. Leave the faucet open when you restart the pump so no air is trapped under the water side of the bladder.Finally, check that there is a 20 PSIG difference between pump cut-on and cut-off pressure, or the tank will not last. Remember that the larger the tank the better, because the pump and pressure switch life are rated in number of starts.

Posted on Sep 04, 2015

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Posted on Jan 02, 2017

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1 Answer

Working pressure


Putting 60 lbs. of pressure in the pressure tank is not the answer.

First determine that the pump is working correctly, Open the drain valve and see if you get a good flow of water. If you do then OK, the pump is working. If you are not getting a good water flow from the drain valve, then the pump is not operating correctly - maybe a bad foot valve. Next open the drain valve and watch the water pressure gauge, and note at what pressure the pump kicks on ( that's the cut-in pressure), and when it kicks off ( that's the cut-out pressure). Most pumps are set to operate at 20-40 psi, or 30-50 psi. The cut-in and cut-out pressure is set by the water pressure switch.The pressure in the water tank has to be set 2 psi BELOW the cut-in pressure of the pump. That is, if the pump has a 20-40 psi differential, then the tank has to be pre-charged to 18 psi.

To pre- charge the pressure tank , the pump has to be shut off. The Tank needs to be emptied (drained ) of water. The air pressure is then set to 2 psi BELOW the cut-in pressure. If water escapes from the air valve, the bladder in the tank is ruptured, and a new tank needs to be installed.

So, first make sure the pump is working.
I WOULD RELIEVE MOST OF THE PRESSURE IN THE PRESSURE TANK TO ABOUT 20 PSI BEFORE CHECKING THE PUMP, AND PRCEEDING WITH THE PRE-CHARGE OF THE TANK.

May 24, 2014 | Plumbing

1 Answer

Problem with pump?


The pump pressure switch should be checked to see what the ON-OFF pressure is set at. Typically the pressure switch is set for 20-40 psi, or 30-50 psi. The pressure tank should be purged as well. With the pump OFF, and the tank drained of water, the air valve on the tank should read approximately 2 psi below the "on pressure". So if the system operates at 20-40, the tank should be pre-charged to 18 psi. If water escapes from the air valve, the internal bladder in the tank is ruptured, and the tank needs to be replaced. A tire air gauge is used to measure the pressure in the tank after the water is emptied from the tank.. A tire air pump or a compressor is used to charge the tank. if a compressor is used, be careful not to over-inflate the tank, as this may cuase the bladder to rupture.

Apr 14, 2014 | Utilitech Plumbing

1 Answer

Pump not holding presure


If you have a bladder - type water pressure tank, it probably needs to be purged of air and then pre-charged to 18 psi. There may be directions on the side of the tank. Turn the water Pump off. Drain the tank of water. Check the pressure of the tank at the air valve on top of the tank. The pre-charged pressure of the bladder is set to 2 psi below the lower pressure set by the pressure switch, so in your case, the low end pressure is 20 psi. Therefore, the pre-charge pressure of the tank is 18 psi. If you set the pressure switch to operate at 30 -50 psi, then the pre-charge pressure would be 28psi., etc. Once the pre-charge pressure is set, turn the pump back on. ( don't forget to close the drain valve). The system should cycle normally. A tire gauge works to check the tank pressure. An air compressor may be used to charge the tank, but be careful not to over- inflate the bladder. A tire air pump may also be used. Hope this helps....

Apr 06, 2014 | Utilitech Plumbing

2 Answers

How does pressure tanks work


Pressure tanks do just that in a water system. They create pressure for water to flow when the water pump is on the off cycle. A manifold is plumbed into the tank from the main line coming from the well. The main water line continues to the house plumbing from the manifold. So it's line from pump to manifold - to tank, and from manifold to main into house. The manifold also has tappings for the pressure gauge and the pressure switch. The pressure tank creates water pressure. The water does not flow through the tank. Pressure tanks also have to be 'tuned' or adjusted to the low end pressure set by the pressure switch. Actually the tank pressure needs to be set 2psi below the low end pressure. Most residential water systems are set to operate between 20 -40, or 30-50 psi, which is set by the pressure switch, which in turn , turns the water pump on and off. So if a system operates between 20 and 40 psi, the pre-charged pressure of the tank should be 18 psi. Pre-charged means the tank is drained of water with the water pump OFF. The tank pressure is then checked adjusted by way of the air valve on top of the tank ( A tire gauge works). Pressure tank mainfolds are a common plumbing part.

Mar 19, 2014 | Utilitech 20-Gallon Vertical Pressure Tank...

1 Answer

My sand point well the water stops and starts again


You probably need to purge the pressure tank.
Well Pressure Tank Installation Instructions

Pressure tanks lose their Pre Charge pressure and have to be serviced. The well Pump needs to OFF. The Pressure tank needs to be emptied of water. There should be an air valve on the tank. Check the pressure .If this is a Bladder tank and Water comes out of the air valve- then the bladder is broken and the tank needs to be replaced. The Pre Charge pressure is set to 2 psi Below the cut-in pressure set by the pressure switch. If your system operates at 20-40 psi, The Pre Charge pressure will be 18 psi. Hope this helps.....

Mar 18, 2014 | Bur-Cam Pumps 750896 Water Shallow Well...

1 Answer

Hello,


The pressure tank psi may be too high. To set it you get the system to pressure up and stop then check that water pressure. Whatever that is, is what the tank should be set at. Too much air pressure and the water pressure will suddenly drop before the pump kicks in.
To set the tank properly turn off the pump, drain all water pressure, then set the air pressure in the tank to the same as the water pressure was. Turn it back on and check again.

Apr 14, 2017 | Water Heaters

1 Answer

Water pump cycles to often. When pump turns on, pressure gauge shoots up to 50 lbs right away without pumping much water.


Sounds like a well fed system with a pressure tank that has lost its air charge. Check for a water tank with a tire pressure type stem fitting, should also have a pressure gauge. Most newer tanks have a rubber diaphram inside to keep the air and water from mixing, but a lot of older ones don't and the newer ones will develope a leak that will produce the simpoms you describe. Try adding a few pounds of air pressure to the top of the tank and check for leaks. Warning: Compressed air can escape explosivly if the tank is badly rusted out but if your water pressure goes to 50# without the tank leaking, it should be safe to add up to 25# of air. The air charges the water system and allows the pump to shut off until enough water is used to lower the pressure back to set points on the control switch. It's not a good idea to adjust the set points on the switch unless all parts in the system have been checked for safety to the new pressures.

Aug 13, 2009 | Water Heaters

3 Answers

Flotec 42 gallon water tank - short cycling and changing water stream...do I need a new tank or could it be another problem?


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!

Jul 06, 2009 | Flotec Corrosion Resistant Shallow Well...

1 Answer

Pressure switch goes on and off


Ckeck the air pressure in your pressure tank. If it spit out water your bladder is broke and you'll need to replace it. If no water shut your pump off ,drain your tank and set yuor tank pressure 2 pounds lower than your low pressure setting. so a 30/50 pressure switch your tank pressure should be 28 psi

Jun 27, 2009 | Plumbing

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