Your pressure regulator should keep the pressure steady at whatever it was
set at, somewhere between 40 and 60 lbs. You can change the secondary
pressure, usually with a small adjustment screw.

Your street pressure is probably 118 lbs. Because you pressure drops to as
low as 28 lbs, your pressure regulator is defective.

I never had any luck repairing these things. Better to drop in a new one.
They last 10 to 30 years.

--
Walter
www.rationality.net
-
"Charlie" wrote in message
nk.net...
My house water pressure regulator has started to make a high pitched
'whine'
whenever the water is on somewhere in the house.

I put a pressure gauge on the outside hose bib, without any water running
in
the house, and the pressure gauge showed 118 psi.

I opened a bath tub's hot and cold faucets, and the pressure dropped on
the
gauge to 48 psi;

I then also opened the second tub's hot and cold faucets, and the pressure
gauge dropped to 28 psi.

I'm confused as how the pressure regulator is suppose to work; and isn't
an
initial 118 psi a tad bit high?

Anybody out there know anything about these things and give me a bit of
direction?

Thanks in Advance,
Charlie