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. ==================================================================== 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 ==================================================================== -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send list subscription requests to `techdiver-request@aquanaut.com'.
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