[Shop-talk] About the well & water pressure & life sucking

[Paul Parkanzky]

Not exactly. The pump is where the pressure comes from to pressurize that
tank.  The idea is that without the tank the pump has to run all the time to
provide pressure, even for light usage.  Instead, you pressurize the tank to
70 PSI, then allow it to drop down to 60 PSI, then pump it back up again.
But you're making that pressure with the well pump.

It's a lot like the tank on your air compressor.  Without a tank your
compressor has to run anytime you want any air.  Instead, the compressor
pumps the tank up to 125 PSI or whatever and you can use air until it gets
down to some set point and fills it back up again.  The other advantage to
this is that you get steady pressure and not surges.  The water tank needs a
bladder of air to be pressurized because the water is basically not
compressible.

-Paul
On Dec 12, 2007 4:01 PM, <ericm at lne.com> wrote:

> Hi Mark.
>
> The pressure tanks have air in the top to provide the pressure.
> On ones that don't have a diaphram, the air bubble slowly is
> absorbed into the water and disappears.  So you need to let more
> air into it every so often.
>
> I don't know which valves to turn to let air in, we have a gravity system.
>
> If you have the diaphram kind, the diaphram can leak and cause
> the same problem.
>
>
> You shouldn't be getting pressure directly from the pump, its
> only supposed to fill the tank not pressurize the system.
>
> Eric
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