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Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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What will I go with?

1/2"
0
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3/4"
2
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Total votes : 2
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Unread postAuthor: LucyInTheSky » Tue Aug 01, 2006 5:47 am

I am going to buy a 3/4" QEV and need to have a safty ballvalve in front of it, I was thinking if the flow of the QEV is 7.81Cv and the flow of a 1/2" Ballvalve is 8.053Cv then will I need a 3/4" Ballvalve safty or will it make no difference if I used a 1/2" Ballvalve?
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Unread postAuthor: boilingleadbath » Tue Aug 01, 2006 12:16 pm

Depends on which ballvalve you get; alot of those 1/2" ballvalves don't have .5" porting. I'd go with the 3/4" ballvalve just so you don't have to buy a bushing.
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