LilMsMagic
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I love my worthington hp steel 100's. It allows me to need NO WEIGHT when diving ...
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Sheri,
Your article neglected to mention a significant downside of diving with PST, Worthington, and Faber (and other) high pressure steel cylinders. A recreational, open water diver should be weighted such that, with a full cylinder and a completely empty BCD, he or she should be able to establish *positive* buoyancy at the surface by simply dropping his or her weight belt. However, when full, these high pressure steel cylinders are so negatively buoyant that a diver just might not be able to do thisespecially if he or she is wearing a thin, or no, wetsuit.
And, of course, this has obvious implications for recovering a non-responsive diver from depth, too.
Note: This is less of a concern when using the old steel USD (PST) 72's (71.2 cu ft at 2,250+10%=2,475 psig)especially when diving in salt water.
Safe Diving,
rx7diver
Biggest problem with Aluminum cylinders is their life expectancy. Compared to a steel cylinder the aluminum is and always will come up short. 10,000 verses 100,000, I know what cylinder I rather dive.
Secondly, Work Safe Australia, 8 months ago deemed that all Aluminum Cylinders made before 1990 are not to be tested, nor shall they be filled. So what does this really say about aluminum cylinders?
Steel cylinders maybe heavy, but they are the better choice out of all cylinders.
. If you have ever struggled to stay down at the safety stop, you can really appreciate it.
.
This is because you are under weighted. It has nothing to do with what tank you are using.
Secondly, Work Safe Australia, 8 months ago deemed that all Aluminum Cylinders made before 1990 are not to be tested, nor shall they be filled. So what does this really say about aluminum cylinders?