"Zoe" wrote in message ...
is there an easy to install WPR similar to these units (midway down the
page) http://www.plumbingproducts.com/wate...arresters.html

there's a "Mini-Rester" and am wondering if this can be used on the water
heater hot water connection?
current water heater uses flex copper tubing from home depot and (if
possible) would like to stop the slight sound which occurs only on the hot
water line (when hot water is turned off)

Pressure regulators are different than hammer arrestors. Which do you want?
All are easy to install, just cut the line and put in the new fixture.