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Posted by HeatPro on May 26, 2006 at 20:34:35:
In Reply to: Re: could we have combustion problem? posted by Dave on May 26, 2006 at 19:29:42:
:That is very strange. It isn't good for the needle; it will shorten its life. It must be in a 'whistle cavity' of tuned length causing cavitation. That's why changing the outlet valve flow is done to see if the flow change can 'detune' the bend.