What is this??

[DrunkenParrot]

I was looking at some pics and came across this? Can someone explain this to me. Sorry for my iggnorance....

 

[diversteve]

One of these: Aircon Tauchtechnik: Air 230 und Air 300

Google Translation of the product page:

Aircon ® Multi-valve with micro-filter-Plus ®

The classic Hochleitstungsventilen. The construction of the multi-valve offers low height above the vessel and a crossed arrangement of the connecting thread. This arrangement also allows the connections to subsequent expansion of mono-use bottles for bottle package with bridges, bridge, port and clamp kit from the aircon ® program.

Of course, all components in pressure ranges of 200 bar and 300 bar are used. Combined with our Micro-Plus ® filter, which provides additional protection against freezing of nachgeordeten pressure components, you achieve maximum security.

Looks like a dual isolation valve for a single tank. Not sure why you'd want that - I suppose if one reg failed you'd have a backup. Since they mention freezing it's possible that it's redundancy in low-temperature conditions - i.e. if one reg freeflows you shut it down and use the other one.

 

[DrunkenParrot]

thank you sir

 

[scubadiver888]

Talking to technical divers, they typically dive with doubles. This means two tanks, two values, set full sets of regulators. Some will dive a single tank with an H value. The H value lets them hook up two full sets of regulators to the single tank. This way if one set of regulators fails, they can turn it off and switch to the other set of regulators.

What you have pictured here looks to be a similar concept. However, I notice in the picture that each first stage regulator has one one hose and therefore only one second stage regulator per valve. I suspect the yellow knob is for the octo and the black knob is for the primary second stage regulator. Not quite as much redundancy as two full sets of regulators but it would have the advantage of turning off the air to the primary if you get a free flow and switching to the octo.

 

[Captain12Pk]

Doubles regs are only one per side as well. Just fyi.

 

[scubadiver888]

Doubles regs are only one per side as well. Just fyi.

:doh: Quite right. The moment you posted this I remember a tec instructor telling me I'd just need a second first stage to switch to doubles.