I purchased my home new, in 1999, which was built with the Vanguard Manabloc System. In the past year, each of my three toilets have developed water hammer. I've tried draining the plumbing to get air back into the lines, but no luck. I also changed the fill valves with American Standard, then Fluidmaster. The Fluidmaster produced the loudest "bang" even after adjustments.

Am now looking into installing arrestors, and would like to know what type & brand might best be suited to get rid of this annoying problem. Any Suggestions?

Willy Dub