Re: freeflows

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Posted by Kendall Raine on April 30, 2001 at 10:01:09:

In Reply to: Re: freeflows posted by Steve on April 27, 2001 at 17:40:59:

Fair enough, but flow rate is the issue, not IP per se. Are you suggesting a custom fitting for second stage use? If so, then presumably you could specify a sufficiently high flow rate so as not to impede second stage performance.

On the other hand, of all the different types of LP failures I've witnessed, a leaky QD has been the second most frequent right behind a sticky inflator valve. One solution is to change out the hose frequently, which should be done anyway. Nevertheless, the QD does constitute an additional failure point.

For OE, however, we would never use such a device since it's not necessary. Any OE exposure, including virtual, requires a redundant first and second stage. For OW, a well maintained second shouldn't free flow if the IP is set low-around 120-unless the water is really cold-sub 40 F. If you're diving in water that cold, it's better to use doubles or a Y valve since the QD won't protect you from a first stage freeze up/failure.

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