What's your favorite set of doubles?

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mission specific...

2x - AL63 - DH twinset (cool factor)
2x - AL80 - summer (wet) dives in deep(er) waters
2x - LP85 - nice (XS/Worthingtons)
2x - HP100 - nice+ (Faber)
2x - HP120 - nice++ (lots of gas!) (XS/Worthingtons)


just got the parts to put together a Vintage 72 (Norris) twinset....
still want a LP50 twinset....
 
Huh? :confused: I bring my 2 tanks. And instead of him bringing 2 tanks like me, he brings 4, AKA "2 sets of 50s". :)

You each get to bring two tanks + small pony.

The pair of 50s will use up two tubes on the tank racks. Its a space and clutter issue.
 
Interesting then. Can you explain why?

They don't have as much capacity for a given weight of steel.

There are some here, that are repurposed medical or industrial cylinders with scuba valves installed. Not common.
 
I have LP72 (PST), HP100 (one set PST and one set Faber), and HP120 (Worthington) doubles. I dive whatever provides the gas I need.

I have a proper set of modern Dive Rite 7/8" manifolds that came with my PST HP100s. They're nearly impossible to find, but do exist.
 
@2airishuman what valve fits correctly in a medical o2 aluminum for scuba?

There aren't any because they are 5/8 UNF or something like that. The steel o2s have 1/2" tapered NPT though, and so valves are available for those. That's what I've seen sold as scuba cylinders.

As an aside, I like the steel bottles for medical o2, 10 years on the hydro, and safer IMO for oxygen use. The aluminum cylinders have a good track record but not perfect, the steel ones never catch on fire.
 
You each get to bring two tanks + small pony.

The pair of 50s will use up two tubes on the tank racks. Its a space and clutter issue.

The 2nd set goes under the seat. There is never an issue.
 

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