Periodic Knock in Pipe
Your problem is kind of different from mine then. I hope "Ron the plumber can give you some insight"... I see web-site talking about discharge all the water on the pipes and start again.... kind of shut down the main then discharge water in all pipes at the lowest faucet... then fill them up...etc. can't remember the exact steps... but somthing like that....
if I have to guess, your pipe system's stablizier is all filled up with water and unable to do the cushoning effect.. and that is why you experience diminishing magnitude wave knock sound.... somewhere in your pipe system need som air cahsioning.... there are such in shower normally....
Last edited by KUIPORNG; 06-04-2007 at 02:42 PM.
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