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
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.
On Jan 15, 9:17 pm, email@example.com wrote:
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.
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
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
Other possible, shut off valve not fully open.
I come down on the 'blocked pipe' as most probable.
Your description is rather vague, you don't say where the valve was
tightened. If it was the cold water inlet valve, and if it is a standard
compression valve and if it was leaking around the stem, tightening the nut
on the stem may have turned the stem (it has happened to me) and slightly
closing the valve, reducing the water supply to the tank and therefore the
water out of the tank.
Help is all in the details which you have not supplied, anything else is a
guess as we cannot see your installation, such as what I describe above. You
should probably call the installer to fix the problem as he/they seem to
have caused it.
On Tue, 15 Jan 2008 19:17:20 -0800 (PST), firstname.lastname@example.org wrote:
Why didn't you just connect to the city hot water supply?
Hot water heaters are obsolete these days. Most modern homes have
both a cold and a hot pipe entering the house from the street. It
costs a few bucks more to get your hot water from the city, but you
dont have all the plumbing problems anymore. The hot water pipe
should be right next to your water meter and be painted red.
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