Here is an easy solution for the DIY handyman.
After having water hammer problems in our pipes for a few weeks, it was time to go looking for a solution. I thought I'd try an easy fix by going to the local hardware to see what was available off the shelf.
I decided to try these new "Hydroseal Anti-Hammer O-Ring Tap Valves. And it worked. How easy was that. Also with the "spring" there seems to be no need to over tighten the tap to turn it off. The spring pushes the valve closed with very little pressure needed on the tap handle itself.
"Hydroseal's anti-hammer valve silences noisy pipe shudder by incorporating a cushioning spring. This spring allows for the gradual opening and closing of the tap.

