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#### alex6999

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I think i need to add air to water tank, i have low pressure when pump not working.

I will turn off pump, dump water, then pump air to what pressure?

#### SeniorSitizen

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The usual recommendation with a bladder tank is 2lb. less than well cut in pressure.

COPIED: our well tank's pressure should be set at 2 psi below the pressure switch's cut-on point. This differs depending on your tank's pressure settings. Most well tanks come set at 30/50. The cut-on pressure for the well pump is 30 psi, so the pressure of the tank should have a pressure of 28 psi.Feb 18, 2020

EDIT: EDIT:

Don't dewell on this too much attempting to get exactly 2 lbs. lower. The reason, you'll be using 2 different gauges that may only be accurate to + - about 5%.

#### Old Thomas

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I set it as close to the pump cut in pressure as possible. Then just as the tank runs out of water the pump kicks on.

#### ron45

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The usual recommendation with a bladder tank is 2lb. less than well cut in pressure.

COPIED: our well tank's pressure should be set at 2 psi below the pressure switch's cut-on point. This differs depending on your tank's pressure settings. Most well tanks come set at 30/50. The cut-on pressure for the well pump is 30 psi, so the pressure of the tank should have a pressure of 28 psi.Feb 18, 2020

EDIT: EDIT:

Don't dewell on this too much attempting to get exactly 2 lbs. lower. The reason, you'll be using 2 different gauges that may only be accurate to + - about 5%.
Also, you should get a tank size that fits your house.
You should get a switch that fits your needs. The average is 30/40
If you have lots of plumbing and water savers etc., you might want a 50/60 switch'
Under rare circumstances you may need a 60/80 switch.

#### AllanJ

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How much water do you get out of a cold faucet after the pump shuts off before the pump turns on again?

When does the pressure become too low and what pressure does the gauge read or point to at that moment?

#### joed

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That tank does not look like a bladder tank. It looks like a 30 gallon capture air tank. Low air volume will not make low water pressure. It will make the pump cycle on an off quickly. You can not put too much air into that tank. Any extra air you add will simply blow out of a faucet and the system will balance itself out.

#### HotRodx10

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It sounds like your cut-in pressure may be too low. How far does the pressure drop before the pump kicks on?

#### alex6999

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Discussion Starter · ·
I can't answer(see picture) pressure drop significantly.

Stupid question, what is my cut off pressure?
I live in rental home and landlord does not want to repair anything until it completly broke, so I can put any pressure into tank.

#### chandler48

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An 18 year old capture air tank and the rusty periphery......don't mess with it. It will leave you with possible liability should things go wrong. Something will break, soon, so keep an eye on things. Without a bladder, the only way to restore proper water pressure is to empty the tank and start over. It appears it is water logged without any air in the head space.

Bondo

#### joed

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Cut in and cut off pressure are pump start and stop pressures.

#### AllanJ

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Operating pressure: Pressure not to be exceeded during normal operation. Most water systems are set for a maximum pressure of about 60 PSI which is when the pressure switch turns the pump off (cut out pressure).
Test pressure: Pressure used momentarily during manufacturing and testing to assure that the tank will not burst at the lesser operatng pressure stated.
Operating temperature: Specifies maximum water temperature during normal operations, for this particular tank, suitable for storing domestic hot water in the home but not for hooking into the piping of a hydronic or steam heating boiler or system.

Simple way to accurately preset a non-bladder pressure tank: Turn off pump or main water supply. Open a cold water faucet. Add air to the tank until you get air coming out of the faucet. Close the faucet. Add more air to the tank until you get almost to the pump turn on pressure. Turn on the pump.

#### SeniorSitizen

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QUOTE:
I think i need to add air to water tank, i have low pressure when pump not working.

I will turn off pump, dump water, then pump air to what pressure?

I can't answer(see picture) pressure drop significantly.

Stupid question, what is my cut off pressure?
I live in rental home and landlord does not want to repair anything until it completly broke, so I can put any pressure into tank.

*****************************************************
So the landlord is stupid and we can't help solve that problem, BUT hopefully someone can tell you how to completely break it so the stupid land lord must fix it.

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