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Subject Author Date
Hot Water Tank Lost Pressure chubbard16 01-15-2008
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Posted by on January 15, 2008, 10:17 pm
After the installation of a new water tank, the water pressure became
erratic and weak. At times, it is as if there is air in the pipes at
the sink faucets; at times the water pressure is simply weak;
whenever more than one water source is used, the pressure is almost
depleted.

Is it possible to correct this on/in the water tank itself? Is it a
valve on the tank? Right after installation, there was water leaking
from a valve on the side of the tank. I tightened the valve and the
leakage stopped. Would this have anything to do with lost pressure?

Thanks for your help.


Ladyrev

Posted by jim on January 16, 2008, 8:02 am
On Jan 15, 9:17=A0pm, chubbar...@aol.com wrote:
> After the installation of a new water tank, the water pressure became
> erratic and weak. =A0At times, it is as if there is air in the pipes at
> the sink faucets; =A0at times the water pressure is simply weak;
> whenever more than one water source is used, the pressure is almost
> depleted.
>
> Is it possible to correct this on/in the water tank itself? =A0Is it a
> valve on the tank? =A0Right after installation, there was water leaking
> from a valve on the side of the tank. =A0I tightened the valve and the
> leakage stopped. =A0Would this have anything to do with lost pressure?
>
> Thanks for your help.
>
> Ladyrev

Is the pressure drop through out the house or just one tap was the
installer licensed or a freind who has done this many times suggest
you drain the tank remember to turn flame off or power drain refill
make sure it is full when you turn it back on . Also make sure it is
hooked up right wouldn;t be the first I have found with cold to hot
and hot to cold . Something is plumbed wrong as tanks do nothing to
pressure 35 yrs plumbing has told me that.

Posted by jim on January 16, 2008, 8:06 am
> On Jan 15, 9:17=A0pm, chubbar...@aol.com wrote:
>
> > After the installation of a new water tank, the water pressure became
> > erratic and weak. =A0At times, it is as if there is air in the pipes at
> > the sink faucets; =A0at times the water pressure is simply weak;
> > whenever more than one water source is used, the pressure is almost
> > depleted.
>
> > Is it possible to correct this on/in the water tank itself? =A0Is it a
> > valve on the tank? =A0Right after installation, there was water leaking
> > from a valve on the side of the tank. =A0I tightened the valve and the
> > leakage stopped. =A0Would this have anything to do with lost pressure?
>
> > Thanks for your help.
>
> > Ladyrev
>
> Is the pressure drop through out the house or just one tap was the
> installer licensed or =A0a freind who has done this many times suggest
> you drain the tank remember to turn flame off or power drain refill
> make sure it is full when you turn it back on . Also make sure it is
> hooked up right wouldn;t be the first I have found with cold to hot
> and hot to cold . Something is plumbed wrong as tanks do nothing to
> pressure 35 yrs plumbing has told me that.

Also check if the fill valve is open all the way and if an older home
you might need to check you pipes if galvanized how is the cold
pressure is the water hot when you get it

Posted by David L. Martel on January 16, 2008, 8:43 am
Lady,

This is confusing, you mention a hot water tank (water heater?) without
explaining what it is. If you are on a well you may have a water tank which,
if not working correctly, could cause these problems. This tank is not a
"hot water" tank. Often this tank will have a bladder full of air and if the
bladder is not properly pressurized with air it will do what you describe. I
call this tank the storage tank. A trickle of water from a drain valve or
faucet or toilet might cause this problem. You say that you stopped the
trickle so I doubt that's the problem

Dave M.



Posted by Harry K on January 16, 2008, 11:19 am
> Lady,
>
> =A0 =A0This is confusing, you mention a hot water tank (water heater?) wit=
hout
> explaining what it is. If you are on a well you may have a water tank whic=
h,
> if not working correctly, could cause these problems. This tank is not a
> "hot water" tank. Often this tank will have a bladder full of air and if t=
he
> bladder is not properly pressurized with air it will do what you describe.=
I

<snip>

> Dave M.

Errmmm...an improperly pre-charged tank will not cause those
problems. All it does is change the cycle time of the pump. Pressure
on/off does not change.

As for the OP's problem. I the problem is both the hot and cold,
the house system may have been shut off to change out the tank.
Probably the first time that valve had been operated since
installation. I suspect some crud broke loose and is blocking flow
somewhere.

Other possible, shut off valve not fully open.

I come down on the 'blocked pipe' as most probable.

Harry K

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