Hi, not sure if by posting here it'll send you an e-mail or not but thought it was worth a shot.
I found your thread on here about your banging pipes and just wanted to know how it went for you as I've moved into a house with what sounds like the exact same problem and so wanted to know if the...
Sorry for dragging up an old post but did you ever fix your banging?
I've moved into a house with what sounds like the exact same problem and so wanted to know if the arrestor/shock absorber worked for you, and where you ended up putting it.