Sorry for the crummy title, but its the best I can describe it.
When I turn on my cold water all the way a muted sounds in the faucet and the fixture jumps a little bit. If I turn it on slowly it doesn't happen but if I have it turned on a little then crank it up fast it still does it. So I presume it's related to how fast I drop the pressure.
Is what I'm hearing water hammer? Is it related to the condition of my 50 year old galvanized supply pipes. More importantly, will it harm my washerless faucets?
Assuming I actually get around to changing out my pipes will this problem go away.