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Water pressure and a well
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tomatolord    Posted 09-18-2001 at 16:54:33       [Reply]  [Send Email]
How do you maintain good water pressure from a well?

We have a good 2-3 gallon flow but at times the pressure is zero if the washer is starting to load.

So there has to be water in the well just none coming through the pipe!

Then a few minutes later the water is coming out at high pressure!!

Is their a secret to this?

Gary    Posted 09-24-2001 at 13:38:35       [Reply]  [Send Email]
Your pressure tank should be charged to be one
half your maxium pump pressure [pump goes to 80psi
you need to charge your tank to 40 psi] on most
tanks you can test this with a tire gauge.

rhudson    Posted 09-19-2001 at 23:38:17       [Reply]  [Send Email]
i would suspect you are pumping your well down below the intake of pump. pump runs dry, then suction side of pump is refilled as well recovers and starts pumping again.

what size storage tank do you have and is it in good shape (that will help with small draw offs but not if you use a lot of water at a time).

with low well gpm rates a large storage will be needed along with a cycling timer to allow well to refill while pump is timeing off.

i have seen some installations that require a low pressure storage tank (for stored volume from well) and another pump and normal tank for house pressure. those installations require two pumps, one level controlled and the other pressure controled, timer. i hope that is not your trouble. could you post back prease?

Greg D.    Posted 09-19-2001 at 19:34:02       [Reply]  [Send Email]

No offense, but if you are standing next to you pump casing and can`t tell when it kicks on, you should call a well outfit!!!!!!!!!!
You can either watch the pressure gauge when it hits the pre set low pressure as it will sart to rise, or carefully remove the cover from either the control box or the pressure switch and watch the contacts as someone is running the hose.

mike    Posted 09-19-2001 at 18:27:11       [Reply]  [No Email]
2 or 3 gallons is not much water flow,most well's
I've seen operate on 6 or 7 gpm.

Ray    Posted 09-19-2001 at 10:47:31       [Reply]  [Send Email]
Try this web site. You can post a message and somebody will respond back to it.

Danny in CO    Posted 09-19-2001 at 09:50:02       [Reply]  [Send Email]

I'm not a well expert, but here's how I think mine works. My well is 920 ft deep with a 2hp pump at the 450' level. In the house I have a pressure tank. When the pressure in the tank gets low, the pump will kick on to build up the pressure. My well will put out about 18 GPM with good pressure for several hours until the level in the well head gets to the pump level. Then the pressure and flow will drop.

My pressure tank has (I believe) a blatter inside that has air pressure on one side and water on the other. I have heard that if the blatter get a leak, the water pressure drops. My tank has a air pressure valve on top like the one on your car tires. If you press the valve open and water comes out, the blatter is bad. If there is no pressure, try putting air into it up to about 30-40 lbs (a guess).

If I'm wrong, I'm sure someone will correct.


Randal Columb    Posted 11-10-2003 at 08:03:13       [Reply]  [Send Email]
I'm new to wells and pumps, but I found this link that may help you.

Randal Columb    Posted 11-10-2003 at 07:58:11       [Reply]  [Send Email]
I'm new to wells and pumps, but I found this link that may help you.

ShepFL    Posted 09-19-2001 at 07:06:43       [Reply]  [Send Email]
Keep going - I am very interested as I have the exact same problem. Very discouraging/frustrating.

I have a 4" well, 385' deep in the FL aquifer, with a 2hp submersable pump, 20 gal air tank with a 1" PVC pipe to the house. Initially rated at 12 gpm. Pump cycles frequently. Standing by to learn

Tomatolord - Thanks for bringing up this subject.

rhudson    Posted 09-19-2001 at 23:26:06       [Reply]  [Send Email]
lets try this. look at pressure gauge that is near well head. note pressures that pump turns on at and off at. after pump has cut off, open a hose bib and measure the amount of water drawn off before pump starts up. stop pump, draw off all water until it stops flowing. with a good tire pressure gauge, measure the bladder air pressure. mine requires about 2 psi lower pressure than pump cut on pressure, but find instruction label on your tank. adjust pressure and turn pump on. let pump cycle a few times drawing water off each time to remove any air in the water lines. then try measuring drawn off water to see if you have more storage now before pump turns on. my tank is rated as 10 gallon, today i drew off 7 gallons before pump turned on (i was told that 5 gallons was the average storage expected from a 10 gal rated tank, go figure). also have you checked for a leak between the submerse pump and well head (usually can hear that at well head unless leak is under water) its too late for me to think, but would you mind posting back what you find?

Franz    Posted 09-18-2001 at 17:06:15       [Reply]  [Send Email]
Sounds like either too small of a tank, or a waterlogged tank. Send more information, Type of pump, submersible or above ground, tank size etc, like how often is pump starting.

CJC    Posted 09-18-2001 at 18:28:27       [Reply]  [No Email]
There is also a pressure reguator switch on most tank / pump units. There is a spring that is tightened by either a screw or nut that will affect your pressure. Be sure to read and make sure what the maximum pressure allowed is and then back off a little. Should be water pressure guage right next to the switch. This is only from my experience, a water logged tank, I am assuming the air baffle has leaked, will make sure that you have no pressure and my suggection won't work then.

D.Griffin    Posted 06-07-2002 at 18:41:43       [Reply]  [Send Email]
Our pump won't build up enough pressure to cut itself off,even with no outflow. HELP!

tomatolord    Posted 09-19-2001 at 17:46:31       [Reply]  [Send Email]
the pump is below ground so i cannot really tell when it kicks in i do not know the hp as I bought the house used.

i could check the well head to see if it is there

I will go down and check the tank as well.

Franz    Posted 09-20-2001 at 17:04:27       [Reply]  [Send Email]
At the tank location, there should be either a galvanized tank, or most likely a tank painted blue. Attached to the tank, should be a pressure switch that turns the pump on & off, about 3" cubical, with both a connection to the tank(water) and some wiring.
Having a second person operate the water tap at a sink, you should hear the pressure switch close & open. When the switch closes & the pump starts, have the other person shut the tap off. If the pump shuts off quickly, chances are very good you have a waterlogged tank.
Depending on the type of tank you have, (blue) bladder type, or galvanized will get the troubleshooting to the next step.
If you have an old galvanized tank, look at it thoroughly for fittings attached to the tank other than the pressure switch, pump supply line, and house connection line.

dee ensminger    Posted 08-29-2006 at 13:48:34       [Reply]  [Send Email]

occasionally my water simply shuts off to the house. I have all new electrical and pressure boxes. What could be causing this?

Earlene Bullock    Posted 06-24-2004 at 20:46:53       [Reply]  [Send Email]
I need a diagram or instructions on what order a pump, pressure tank, and pressure switch are installed.

me again    Posted 09-22-2001 at 08:54:48       [Reply]  [No Email]
Ok i know i have a blue tank and that there is at least 1 silver tank in the crawl space and another blue tank - both went bad i suspect -

I will do some of the other tests above and will post the results

MikeH    Posted 07-31-2004 at 11:58:34       [Reply]  [Send Email]
I have a wierd situation with my shallow well that has just developed. Whenever someone flushes a toilet, I loose all water pressure. The pump doesn't come on right away. Intially, I thought the tank was bad. So, I replaced the tank with a 42gallon tank and have 30#'s of pressure. Still, I checked the pressure switch.
I climbed into the crwal space and brought the hose with me. I sprayed the hose (out of the opening!) until pressure dropped to 40PSI...pumped kicked on. No noticeable drop in pressure out of hose. Pump kicked off at 60PSI
I went inside and turned on the shower & flushed the toilet....Same thing...water pressure died off to nothing and pump took along time to come on.
This only happens when I flush a toilet! Otherwise, the pump cycles like it is supposed to and I have good pressure!
Any ideas?
BTW, I am in Delaware and have a 40' Shallow well with a Gould 2HP jet pump connected to a 42 gallon tank.

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