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I would imagine the burst pressure of the disk will decrease with temperature rise… Copper should melt before steel does.

Not quite correct. If you have Personal account, there is no option to accept credit card payments. If you have Premier or Business account then there will be a fee regardless of how buyer pays - credit card, checking account, PayPal balance, whatever...

Why do you consider two out of three largest available PST cylinders for a petite lady? Probably something smaller is in order, particularly for shore dives. For a 5'9" guy for shore dives I would suggest E7-100. That said, some folks are much stronger than others and/or can use their...

Hey, if you like 'em, I'm glad I could help.

Yeah, if it were a SCUBA tank... The problem is it's not.

New E-Series come oxygen-ready from the factory. http://www.lloydbaileysscuba.com/PST.HTML Though your shop still going to need to slap appropriate stickers on the thank. Many shops will still charge you a full price as if they actually prepared the cylinders for the oxygen service.

garden gong cigarette butt receptacle ;)

That I do not know.

On surface you have water on one side of the diaphragm, air - on the other, the difference in pressure of water vs. air is what pops it open. In contrast if you fill you reg with water and submerge it even with diaphragm down it should not open, since the delta is negligible.

Valve stem (a little brass tube which screws into the valve to prevent rust and other crap from going into valve when tank is upside down)

Neoprene compresses with depth hence loosing its insulating properties. According to what I read somewhere, wetsuits that are not made for diving will do that to even higher degree.

In my case difference in buoyancy between 3mm full suit and 7mm hooded full suit was about 14lbs. If I were you, I'd started with taking the adapter off and playing with the plate and a few pounds on the belt.

Just $75! Whiskers are included. It's a bargain! ;) http://www.unclaimedbaggage.com/letsshop/catalog/catalog_type.asp?CID=49

Yeah ;) Quarrelling on this board complements SCUBA's lack of competitiveness.

You are right on the money, but add ability to float your rig on the surface. Nah... You should never use your BC as a lift bag. A diver with failed BC should be able to swim up on his own unless he is grossly over weighted, which should not be in the first place. Large bladders create...

When diving with pony, I mount mine on the tank, up side down, with QuickDraw bracket using a separate strap, not one of BC's, counterweighted with 2lbs of lead on the same strap.

Golf is considered a sport because it can be played competitively.

Tables assume square dive profile. (descent, stay at the fixed depth, accent) Most real life dives are not square, as his dives were not square.

It might help somewhat, but alone not enough in my opinion. On surface all you do is haul heavy gear, which is not a good exercise. Underwater, the idea is to work your body as little as possible, be relaxed, etc.