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Unread 12-07-2003, 01:55 PM   #4
Blackeagle
Thermophile
 
Join Date: Oct 2002
Location: U.S.A = Michigan
Posts: 1,243
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As Ben said, the small nozzles going down into the base pattern of holes is vital.

Without them a pattern of holes in the top alone will allow the individual jets to disrupt the impingement effect of each other. You will get little proper impingement down inside the individual cavitys where it's important to have it. At the base of the cavitys you may well end up with trapped stagnant water heating up.
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