low pressure inflator thread compatibility

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Messages
4
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Location
Herndon, VA
# of dives
100 - 199
Does anyone know if the threading on low pressure inflators are standardized and potentially interchangeable? I'm specifically wondering if a current production DSS wing lpi threading would be interchangeable with an older u.s.divers (aqualung) lpi off an old sonic 2 bc circa mid-90's???
 
I'm talking about the corrugated hose where it screws onto the bladder, not the hose on the reg. call me crazy, but i'm thinking about buying a dss rig and would like to use my alternate air + inflator that I already have instead of buying another octo. Haven't bought the dss yet, however I'm just trying to put together how much $ i'll have to put into switching before I actually start buying things. might be one of those shot in the dark things where I just buy and see on my own.
 
US Divers was one of the few companies that went with a smaller than standard corrogated hose diameter for awhile. It was a really bad idea. If it is smaller than 1" in diameter, it won't fit a current BC or wing.
 
I'm talking about the corrugated hose where it screws onto the bladder, not the hose on the reg. call me crazy, but i'm thinking about buying a dss rig and would like to use my alternate air + inflator that I already have instead of buying another octo. Haven't bought the dss yet, however I'm just trying to put together how much $ i'll have to put into switching before I actually start buying things. might be one of those shot in the dark things where I just buy and see on my own.

It is probably not compatible at the BC shoulder connection. Most of the smaller mfgrs use the same (or compatible) connectors and 1" corrugated hoses. The big guys (Scubapro, Aqualung, Oceanic, etc) each seem to have their own non-standard design. Many use the 1" corrugated hose (diameter) but a few use a 3/4" corrugated hose. Measure yours and see what you have. If it is 1", you could make the swap there but you would be giving up a pull dump that you probably have. Dive Rite make a pull dump that will fit the DSS wing. With the combined octo/inflator you will also need a longer corrugated hose and LPI hose than is standard with the DSS wing. So, while it may well be possible, it could add quite a bit to the cost. This would probably be a good time to lose the octo/inflator and transition to a conventional octo. I retired mine in the course of changing to a BP/W because it interfered with the slung stage or pony bottle.

BTW, Tobin is not exactly a fan of octo/inflators.
 
alright, i do appreciate the good word. got another question for you aquamaster. i'm out here in herndon, so we're not too far away. what lds do you prefer? anything negative or positive to say about "the dive shop" in fairfax?
 
As an alternative to screwing on the corrugated hose at the shoulder, you could just remove the hose itself (Usually zip-tied into place) and then secure the combination to the wing. It will most likely disable the pull-dump (if so equipped). Additionally, the corrugated hose length might make using the octo/inflator a tad bit difficult if its not the original length.

Alternatively, you can do what I did with my airsource2 when I got my wing: I took it off.
 
yeah, i figured he wouldn't be a fan. the way i look at it though, i'm not exactly a technical diver, don't do over head environments (at least as of now) and mostly just do tropical recreational dives when possible. However, I want to move to a wing and everyone seems to love dss. I try to always have my gear serviced, preferably just before the dives I do since they don't come too terribly close together, so I haven't ever even had to use it for a real situation and hope to never have to use it. It also helps to be on all my buddies about having their gear freshly serviced as well whilst diving in their midst. I understand how some people are polarized with respect to the alternate air. I just got a vyper air going from an old u.s. divers scan 4 hosed a/i computer and was hoping to only have the regulator hose and lpi hose on my reg. That coupled with a dss bp/w, i'm looking for the most naked feeling when diving i guess. I probably will get rid of it in the end, however I'm not laden with gear, I do dive in groups of 2+ most of the time, and not worried about overhead environments since I'm more of the recreational sports type diver. I just want the freedom of a bp/w and since scubaboard is where i look to for opinions to trust, I am leaning towards a dss setup. thanks for the info on this thread, and to anyone else out there that contributes, thanks for that too.
 
BTW, Tobin is not exactly a fan of octo/inflators.

You think?

He talked me out of mine fairly quick. The thing is, the octo/inflator may make sense for warm water diving and that's what I was doing back in '88 when I bought it. Today it's cold water and the inflator makes no sense.

Tobin is right: it is nearly impossible to vent a BC while breathing through the regulator. Performing a rescue where you have to control the buoyancy of two divers, one breathing through such a device would be a nightmare.

A lot of dive gear makes more sense for the warm water resort diver. Integrated weight BCs comes to mind. A good idea where the weight is minimal. A heavy mistake for the cold water wetsuit diver.

I think I like the necklaced octo approach but the jury is still out on whether I like the 5' long hose on my primary. I'm trying to like it but it's not going well.

I'm not unhappy about losing my octo/inflator in the transition to the DSS BP/W. It was an idea whose time had passed.

Richard
 
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