Piston Valve Size?

Cannons powered by pneumatic pressure (compressed gas) using a valve or other release.
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LucyInTheSky
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Dose it matter about the size of the sealing face compared to the size of the piston?

eg What is better, a 50mm sealing face housed in a 90mm Tee or a 63mm Tee?
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It doesn't really matter. In one of t hem you just have more space to vent which makes it slower unless you use a bigger vent.
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Model it in GGDT.

I modeled it, and it appears that the 63mm tee would work better.
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LucyInTheSky
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Oh I didnt know GGDT took that into account. thanks
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