Question about isolating doubles

[ArcticDiver]

Independent Doubles! Solves all your problems

(In all seriousness...take a course, there are argument for/against isolator first...I am of the offending valve first camp...)

Well, I wouldn't say it solves all your problems. But, when I travel to the typical destination where manifolded doubles aren't available that is what I usually dive. I don't have to worry about taking a pony with me. A person can always get two tanks of whatever variety are popular there; usually AL80s.

That said; no tank configuration is without its' pluses and minuses. The argument about single vs. manifolded double vs. independent double, etc. will probably continue generating a need for server space.

 

[ianr33]

There is an argument that isolators are not really necessary, that is assuming you remove the burst disc which is against US DOT rules. Removing the isolator and replacing with a straight tube and removing the burst disc removes 2 places of failure. the argument against that is you could physically damage a valve also if diving doubles in overhead.

The other issue is finding the appropriate straight pipe to fit on your doubles.

regardless of reasoning it is far far more popular and the only recognized option by certification agencies in the US to just keep your isolator although disabling a burst disc is equally popular among tech divers but usually for a different reason.

What about tank neck O ring failure? Not a common problem but it does happen. Without an isolator you are SOL.

 

[rjack321]

So the answer is yes, you can determine it for lots (but not all) cases.

Yup, bumped DIN wheel = bubbles. Yes it was easy to tell which side to shut down (the left).

I try to stop and think before turning stuff off wily nily. Try it, you'll like it

 

[c6six]

Does anyone use or have thoughts on a LOLA valve for doubles / singles?

Golem Gear, Inc. - LOLA Universal DIN Valve

The only benefit I can think of is if you do have a problem with an o-ring connecting the two tanks you could shut off the connection at both tanks and still have gas in both to use.