Posted by Mark F. on April 20, 2001 at 13:10:50:
In Reply to: rotary valves that clack posted by chrisswid on April 20, 2001 at 10:04:00:
the rotors need to be "swedged", but a quick fix can be to wrap the posts with a couple of turns of teflon tape. Not much, just enough to quiet the action. It works.