Author Topic: Well water pressure tank & pressure switch  (Read 230 times)

Offline fespo

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Well water pressure tank & pressure switch
« on: July 05, 2016, 04:51:50 PM »
I need a little help with our well pressure tank. First its a a small tank maybe 3-4 tall about 18" -22 wide. The tank is about 25 years old or so. The pressure switch was replaced about 4 years ago. What is happening is the pressure build and holds at 50 psi you turn something on it drops fast and holds around 25 psi. shut of the water builds right back up to 50 psi and shuts off. So do you think its the pressure tank or switch or both? Thanks

Offline farmboy

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Re: Well water pressure tank & pressure switch
« Reply #1 on: July 05, 2016, 05:48:09 PM »
Sounds like there needs to be a recharge of the air pressure in the tank.

Offline AllisCA

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Re: Well water pressure tank & pressure switch
« Reply #2 on: July 05, 2016, 06:29:56 PM »
You could have a ruptured badder, however I wouldn't believe the gauge until you make sure the pipe nipple to the pressure switch is clear and also the gauge connection is clear. Deposits will close off that pipe and make the pressure switch do funny things. Then dump all the pressure down stream and check the bladder pre charge pressure. If it is zero you can try and recharge it. Open up the drain valve while you are doing it to see if air is bypassing the bladder.
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Offline fespo

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Re: Well water pressure tank & pressure switch
« Reply #3 on: July 05, 2016, 06:39:02 PM »
Wow, never knew alot of this stuff.  How would I recharge the tank?  Im going over to the yard tomorrow and I will recheck all this stuff and see what I can find.

Offline farmboy

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Re: Well water pressure tank & pressure switch
« Reply #4 on: July 05, 2016, 10:03:38 PM »
Like Allis said ::)

Offline AllisCA

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Re: Well water pressure tank & pressure switch
« Reply #5 on: July 05, 2016, 11:29:52 PM »
Wow, never knew alot of this stuff.  How would I recharge the tank?  Im going over to the yard tomorrow and I will recheck all this stuff and see what I can find.
Maybe I should have said repressurize. Just use any air source like small compressor or even a portable tank might work. Should be a tag around schrader saying pressure or just use half of pressure switch setting. I think most are around 30PSI on top of the bladder with all water pressure drained off.
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Offline farmboy

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Re: Well water pressure tank & pressure switch
« Reply #6 on: July 06, 2016, 01:56:54 PM »
Now Allis, we are giving him way too many details :P :P

Good luck on getting you well back in working order.

Offline fespo

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Re: Well water pressure tank & pressure switch
« Reply #7 on: July 07, 2016, 05:12:36 PM »
I replaced the pressure tank, everything is working good now. Thanks everyone for your help

Offline farmboy

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Re: Well water pressure tank & pressure switch
« Reply #8 on: July 07, 2016, 07:25:16 PM »
What was wrong with the old one? We need to know the rest of the story.