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Tom West's Custom PC77 PumpMaster Classic Short Rifle

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LOL! Sorry for the unclear terminology, Phil. All I mean by "dump valve" is...

January 27 2012 at 6:55 PM

Steve in NC  (Login pneuguy)
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Response to Steve. That is a fair deal! I'll do it!

...any valve that - by any means - exhausts all the retained air in a single blast.

"Knock open" or "blow-off" valves would both qualify, even though the former has the potential of air conservation.


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