what is this metal piece?

[Rooster59]

International man of mystery picture here:

What is the metal "heat exchanger" looking piece in the middle of the primary hose?

Thanks!

 

[VooDooGasMan]

Quick disconnect or a moisture filter. Could be a close Buddy signal device as his Buddy is right next to it.

 

[Luis H]

It is the heat exchanger that is included in the Aqua Lung, Legend Glacia.


From their web site:

The Legend Glacia is fitted with three heat exchangers:

•The first completely surrounds the first stage environmental dry chamber
•The second is fitted to the medium pressure hose itself
•The third is in the traditional position adjacent to the second stage casing

Legend Glacia

 

[Akimbo]

Just to expand on Luis H’s post a little, the Glacia is designed primarily for cold water — that is to prevent freezing. A lot of cooling due to the refrigeration cycle takes place as the cylinder gas expands to ~135 PSI over bottom pressure. The intent of the heat exchanger is to warm the gas to the water temperature to reduce the potential of freezing the second stage. It can work against you if you breathe from it before entering the water in very cold air temperatures. I am a little skeptical about its effectiveness.

 

[VooDooGasMan]

So it only works better down under, All regs freeflow if you breath before submerging ice diving, that I have ever dived, except the aqua lung. I have Iced dived for twenty years, now I do it once in awhile, never had a problem with a reg unless it was breathed on surface.

 

[VooDooGasMan]

OOP'S My wife's g250 did once in lake superior, superior Minnesota and when we went from to 150' to 50' I turned it back on and we then went back to 126'. Of course that was not my reg.

 

[Eric Sedletzky]

I heard double hose regs don't freeze up either very easily. Is that true?

 

[VooDooGasMan]

Thats what I meant ZKY the double hose is the only aqua lung I own.