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Old 2013-03-06, 11:25am
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cheng076 cheng076 is offline
Curmudgeon Engineering
Join Date: Feb 15, 2006
Location: Near Seattle, WA
Posts: 1,723

The valves used above are gas rated ball valves. These type valve are not very good for flow adjustment as the port opening is not linear and has a rather short stroke. There are valves that are made to be linear and still have a short stroke but they are expensive.

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