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The compressor has been sold.

Military surplus Walter Kidde air compressor with 5hp Honda gas motor. I have had this for 7 years, but never used it to fill any tanks. The motor was new and has only run for about 2 hours. $1200 or best offer.

One stainless steel backplate, one Aluminum backplate, one 30 pound singles wing, one 40 doubles wing.

In Lake Lanier we see the Budweiser fish, Coors fish, Miller fish, and giant man eating catfish.

When I was certified in 2005, PADI was still teaching 60 fpm. My instructor recommended 30 fpm.

The "official" number, according to the US government, is 700 psi. By that definition, all scuba tanks are high pressure. That is what I use. A 3442 psi tank is high pressure because it is a lot closer to 3500 than 2400.

It is also in Vance Harlow's regulator book. The only regulator that I know of with a pilot valve is Poseidon.

11. All regulators use both mechanical leverage and gas pressure. 24. I am not sure about this, but I don't think Haldane ever changed the ratio. It was always 2:1. The US Navy came up with the 1.58:1 ratio.

That would depend on what you are comparing it to. If you are asking whether diving nitrox with air tables is safer than staying on the boat, then the answer is probably no. If you are asking whether diving nitrox with air tables is safer than diving some other gas with some other tables, then...

Steve, that was a good post, but you forgot one thing. The OP was asking about using the air NDL for conservatism. That means you don't use EAD for dive planning, just the actual depth. The air NDL at 80 feet is 40 minutes, not 60. I don't have the tables with me right now, so I can't calculate...

Non-flammable hydrogen.

I thought the OP was talking about no deco dives. 32% and 1.4 ppo2 is 114 feet. The US Navy air tables give a NDL of 15 minutes at that depth. The NDL from the PADI or NAUI tables may be slightly different, but it is definitely not one hour. It would take a lot more than three no deco dives in...

Maybe he wants a drink.

I recommend keeping the drysuit. I have seen temperatures below 50F in the summer.

42 F with a 3mm wetsuit for 30 minutes. I won't do it again.

That is precisely my point. There are some divers who can use steel tanks with a wetsuit, and there are some who should never use steel tanks with a wetsuit. It should not be assumed that steel tanks are always better. They are better for some divers and not for others.

That is not always true. My body is negatively buoyant. In a 3mm wetsuit, I am neutral. In a 7mm wetsuit, I am positive. I think most people are something close to neutrally buoyant.

There will not be much effect on the temperature of the regulator because the pressure is always reduced when gas flows through the regulator.

When the isolator is opened, the the pressure is only reduced in the left tank. The pressure on the right is increasing. This will heat the right tank, and cool the left tank .

:rofl3: