Diving with two tanks

[TSandM]

Sponon, why are you asking?

It's pretty common for newer divers to cast about for solutions to high gas consumption. Doubles are not the answer to that. There are a bunch of threads on how to be better on gas, with a lot of good tips on buoyancy and efficiency of swimming. Those are much better strategies! Double tanks introduce a lot of additional potential failure points, and you have to have the training to be able to manage those potential failures before doubles actually offer a significant advantage.

 

[Sponon]

Sponon, why are you asking?

It's pretty common for newer divers to cast about for solutions to high gas consumption. Doubles are not the answer to that. There are a bunch of threads on how to be better on gas, with a lot of good tips on buoyancy and efficiency of swimming. Those are much better strategies! Double tanks introduce a lot of additional potential failure points, and you have to have the training to be able to manage those potential failures before doubles actually offer a significant advantage.

Im asking out of curiosity

 

[fnfalman]

Im asking out of curiosity

Curiosity kills the cat.

I don't blame ya. Even though we may not want to dive double-tank or be a tech diver, we would want to learn just for the fun of it.

 

[RU4SKUBA]

Check out the books/DVDs from: 5thd-x

 

[Sponon]

I am sorry guys... I still dont get it

Why do you need two first stages? Why not connect the two tanks together (but still be able to open and close each tank separately) and use only one 1st stage?

 

[RU4SKUBA]

... then go to 5thd-x and get yourself a book or video, do your research, and it will all become very clear

 

[Blackwood]

I am sorry guys... I still dont get it

Why do you need two first stages? Why not connect the two tanks together (but still be able to open and close each tank separately) and use only one 1st stage?

Redundancy.

 

[vjanelle]

I am sorry guys... I still dont get it

Why do you need two first stages? Why not connect the two tanks together (but still be able to open and close each tank separately) and use only one 1st stage?

Isolation manifolds shutdown the regulator connected to that side, the gas can still flow left to right or right to left through the manifold until you turn off the isolator.

If you use a pigtail manifold or one with a single connector and you have a valve issue, you've now lost access to ALL your gas.

 

[Sponon]

... then go to 5thd-x and get yourself a book or video, do your research, and it will all become very clear

I thought this is one of (many) the reasons why there are forums, so we can ask questions. Get educated on different set ups, equipment etc.

 

[Gilldiver]

Or you can fab up one like this.

Tom, your killing me with these projects.

I picked up an early 3/4" USD manifold today, now looking for a J-60 valve for my Captains triples manifold project.