Thread: purge valve
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Old December 15th, 2008, 02:41 PM
dragonman586's Avatar
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Join Date: Feb 2008
Posts: 482
Default Re: purge valve

Ball type check valves like our purge valves don't exactly have the best flow profiles. Another issue is. Which do you think has a greater area. The are of all the holes in your purge valve cap combined or the cross sectional area of your downtube?
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