Dear John, I've used wing type BC's (Dive Rite/Seatec/others) for years and have yet to experience one deflation problem with them. Considering that most have dumps also, I can't imagine how one couldn't dump gas considering there is hydrostatic pressure helping you all the time. Did she forget to point herself in a direction where the gas could escape, or were there serious kinks in the hose and or, a clogged valve? Ken - Ken's Science Store Inc ( Science Video and Curriculum ). -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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