A little over a year ago I installed a new; pressure regulator, and in-line
pressure gauges, before and after the regulator, an anti-siphon valve, and two
ball valves, one before the water meter and one after. All installed in the
3/4 main line coming into the house. The main problem I had for installing all
this was that after checking my water pressure in house, it was at an alarming
115 lbs! When I flushed the toilet as part of pressure testing, the pressure
would spike to 150 lbs. once the toilet filled and shut off, then slowly
return to 115. Yes, there was always a 'thud' when this happened. What
promoted me to finally check the pressure was my pressure release valve on the
water heater either hissed, as it dripped water, or would (usually in the
middle of the night) blow off. After two flooded basements, I piped it thru
the wall to the outside. It still continued to blow off. Plus, I had changed
my kitchen faucet twice, my bathroom sink faucet twice, replaced all the
components in the toilet twice, and the valves in my shower 4 or 5 times. Now
the dual water faucet at the washing machine was dripping, and I finally had
to install a new water heater.! This is an old house, my guess is built in
the 50s, and it looks like most of the plumbing and electrical upgrades and
repairs done through the years were 'half assed'. There were no shut offs at
the meter, and the old style that was farther down the 3/4 main line didn't
completely cut-off the water when I tried to. Of course each supply line had
it's own, but these too were ancient, and had green or white build up, and
ended up leaking once turned off and/or on. Dear Lord. I had the water company
turn off the water at the curb, and installed the items listed above. I was
most concerned about a main shut off both before and after the meter in case
it had a leak, then of course the extremely high pressure in the system. After
I installed all that in the 3/4 main, I installed the new water heater and
added an expansion tank, along with new ball valves (all 1/2"). Adjusted the
pressure valve to 54 lbs., and all seems well. You can definitely notice the
difference. The gauge after the regulator shows the 54 lbs. of pressure to the
system. However, the gauge installed Before the regulator does not register at
all. I suspect it is faulty and will have to contact the manufacturer. I had
installed it to monitor the 'street pressure' coming into the house through
the meter. I had added the anti-siphon valve after reading where it should be,
and is required by, most towns today, along with an expansion tank for the
water heater. (none was originally installed). Shortly after all this work I
developed a vibrating noise in the pipes. Seems to be mostly in the 3/4" main
line, and happens after a water source; toilet, shower, washing machine,
kitchen or bath sink is used, then shut off. Not a banging noise, but a steady
vibrating noise heard through the floor joists. I installed new/more clamps,
it helped some, but this condition still exists. No, the system has no air
hammers that I can find in it. Probably not considering all the amateur shabby
work I see done. Does anyone know, or think, it might have to do with the
anti-siphon valve, bad gauge, or the regulator itself? all were new. All were
Sharkbite components including the ball valves at the meter. The only thing I
did not do that, I was told later that I should have, was remove the plastic
inserts in the ball valves that are there if Pex is used. Could that even be
the culprit?

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