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Old 11-12-2010, 01:08 PM
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Technohippie
 
Join Date: Sep 2007
Location: Sittin' on the "Group W" bench...
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I loved these things as a kid, but have never seen the 2-stage version. How does the staging mechanism work? Does it look for zero pressure in the lower stage tank, or something else?
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Bob Weiss
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