"Speedy Jim" wrote in message
...
John Smith wrote:
Thanks, Jim. Where would I find it (the pressure reducing value)? Would
it be outside somewhere near the shutoff valve?

Incidentally, I did pay more attention the last time, and it's definitely
only the _cold_ water that pulsates.

P.S. Happy Thanksgiving!

Hmmmmmm. If it were related to the PRV, I would expect both
Hot and Cold to be affected. The PRV would normally be near where the
service comes in to the house, or by the meter.

If the faucet mainly affected is a kitchen one which has
a spray wand, then the "diverter" valve (part of the faucet)
is a candidate.

If *all* faucets are affected, possible it is pressure
buildup in the water heater from expansion during heating.
The pressure will bleed off the first time water is used
after a heating cycle.
Jim


"Speedy Jim" wrote in message
. ..

Try to determine if the house has a pressure reducing valve
on the water service. If so, it could be acting up...sticking.
Might look like:
http://www.cashacme.com/pressregeb5.html
Jim

John Smith wrote:


Jim,

I'm not certain about _all_ faucets, but definitely at least a few
different ones. I think it's happening with both hot and cold but I'll
be sure to pay more attention the next time it does it to make sure. As
for the duration, I'd say that it lasts about 30-60 seconds each time,
then stops for a while and eventually happens again.

"Speedy Jim" wrote in message
.net...


John Smith wrote:



We've been in our house for about 8 years and in the past week or so
have noticed water sometimes pulsating when it comes out of the
faucets. Any idea what could be causing this or suggestions for fixing
it? Any help would be greatly appreciated.

Thanks.

P.S. I've looked for other posts, but the closest thing I could find
related to people who get their water from wells, but we don't have a
well; we're on "city" water.

ALL faucets? Hot and Cold? How long does the pulsation last?

Jim




Jim,

Thanks again for the information. I just wanted to follow up and mention
what the problem turned out to be in the hope that this information may be
useful to someone else in the future. I may not get the terminology correct,
but basically here's what happened: my wife called a local plumber who told
her that it was normally due to one of the water lines running more or less
continuously which could cause some type of build-up (pressure or air?) in
the entire system that would bleed off when the cold water is turned on.
Sure enough, we had a toilet with a refill valve that never shut off
completely and when I replaced the float in that tank the problem went away.
Needless to say, I'm very grateful to the plumber who was willing to
diagnose the problem over the phone, allowing me to fix it for a mere $5 and
a trip to Home Depot.