Every one agrees that the Dive Rite, Scuba Pro and Sea Elite (I have not
seen these myself) valves are equivalent, but why do only the Scuba Pro
valves have the thin tube sticking down inside the tank below the threads?
What is it supposed to do? The only explanation I have heard some time
ago was that this would guard against sucking in any accumulated CO2, and
possibly against any loose debris inside the tank, but I don't know about
that. It can't be that critical if Dive Rite omits these tubes.
Egil.
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Egil Aabel Naesguthe
Queen's University E-mail: egil@me*.qu*.ca*
Dept. of Mechanical Engineering
Kingston, ON Phone: +1 613-545 6730
K7L 3N6
Canada Fax: +1 613-545 6489
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