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Yes, do use it on your DAAM. It breaths great for inhalation, and pretty well for exhalation. It passed the U.S. Navy Experimental Diving Unit's evaluation for use. The EDU made recommendations for increasing the size of the exhalation mushroom valve, and later for putting the whole valve in an air bubble, and so U.S. Divers complied and made the later second stages outstanding breathing machines. If you look at the "Figure 13C-2," you'll see the EDU's evaluation of the Conshelf XIV, which is basically the same regulator for the inhalation side, as the Conshelf VI. The "Breathing Work vs. Depth" curves will be slightly different from this diagram for the Conshelf VI, due to the exhaust size. But it will still be pretty good.Thanks, I haven't had a chance to open them up yet, summer project.
I am trying to decide if I want to use one of them with my DAAM like yourself or a 1085
I use a Conshelf VI as my pony reg, and have a red label Calypso as my alternate on a DAAM.... In short, all Conshelfs from the VI through the first generation Titan are the same inside (Parts interchangeable, same rebuild kit). I think they came out in 65?
The Conshelf and Calypso chrome seconds are all of a type commonly referred to as "1085" (comes from a part number). Over the years there were 3 different exhaust mushroom sizes I'm aware of, and the earlier ones have a screw on exhaust T, where newer ones have a pressed on T. (I've made 3d printed T's for the screw on style. If yours are toast, let me know!).
I find them to be great breathers, but I tend to be shallower so the smaller exhaust on the early models doesn't bother me. I use the military Conshelf XIV manual for rebuilding all generations of Conshelf.