So you’re suggesting that someone with a full pressure well system use an air over water tank?
[/quote]
It was how it was done years ago, they would water log and have to be drained and add air to the tank. With the bladder it helps keep more consistent pressure and fewer pump off and on cycles I had the plain tank and would never go back to it.
<div class=”d4p-bbt-quote-title”>Jeremy wrote:</div>
Nobody needs an air bladder in the pressure tank. I remember seeing plenty without. They would lose the pressure charge after a while and you would have to turn the well off, open faucets and use a compressor to blow out the water and recharge the tankSo you’re suggesting that someone with a full pressure well system use an air over water tank?
No, but a tank with a broken bladder can be used in the same way until it can be replaced. I don’t remember seeing a broken bladder cause pressure issues, just a lot of on/off cycles with the pump
If the bladder was broken and the tank was full of water with no air cushion the maximum pressure you could achieve would be the low pressure kick in that the switch was set to . Water cant be compressed therefore the pressure wont build and the pump will cycle and deliver water at a lower pressure than was normal . The tanks need a cushion of air in order to function .
If the bladder was broken and the tank was full of water with no air cushion the maximum pressure you could achieve would be the low pressure kick in that the switch was set to . Water cant be compressed therefore the pressure wont build and the pump will cycle and deliver water at a lower pressure than was normal . The tanks need a cushion of air in order to function .
That is an incorrect statement. You don’t have to compress the air to build pressure. The compressed air simply allows the system to hold pressure longer during water usage so the pump doesn’t short cycle.
In a system that has a tank that has become water logged, the pump will build pressure up to the cut off set point, but lose pressure rapidly when a faucet is opened dropping below cut in pressure and short cycling the pump.
So you’re suggesting that someone with a full pressure well system use an air over water tank?
It was how it was done years ago, they would water log and have to be drained and add air to the tank. With the bladder it helps keep more consistent pressure and fewer pump off and on cycles I had the plain tank and would never go back to it.
[/quote]
If you have to add air to an Air Over Water tank, either components have failed or the system was designed wrong. In an Air Over Water system, when the pump shuts off water if the upper drop pipe drains out of a bleeder valve. The resulting vacuum causes air to be drawn in through a schrader valve at the top of the drop pipe. When the pump kicks back on this air is pushed into the tank to replenish any air that may have been lost, excess air is released through the air volume control on the tank. Air is compressed until pump raises pressure to the cut off point and the system is now pressurized.
I stand corrected
Wouldn’t an air over water tank tend to lose air over time? I would think that some of the air could be absorbed into the water especially if it’s getting compressed. You’d need almost a constant supply of air pressure or recharge it frequently.
We use pressure vessels for testing where I work and we almost always use a constant supply of air pressure when we use them.
I believe thats why you dont see them used very often anymore.
Wouldn’t an air over water tank tend to lose air over time? I would think that some of the air could be absorbed into the water especially if it’s getting compressed. You’d need almost a constant supply of air pressure or recharge it frequently.
We use pressure vessels for testing where I work and we almost always use a constant supply of air pressure when we use them.
You are correct about air absorption. That is why the system is designed to introduce air via the schrader valve. If air isn’t being introduced then either the schrader valve or bleeder aren’t working properly.
Do these things wear out? Have 42 lbs of pressure on it. We do have some sand that is pumped up but have a sediment filter that catches that. Have cleaned that more often this winter than others about every two weeks. But water pressure is low. Running two major things a one time the water pressure is low. Do I need a well guy to look at it?
You must be logged in to reply to this topic.
