Hi guys,
I have one of each of these second stages, and was hoping someone (Greg Barlow maybe?) can give me a run down on the difference between them? Is it just the venturi tube?
Thanks,
Jim
Moderator: Greg Barlow
I completely agree. Other than the VAD (Vortex Assisted Design), I am not aware of any other differences. The orifice diameter remains the same, as does the LP poppet assembly. The III did utilize silicone in the second stage diaphragm and exhaust valve.antique diver wrote:The only difference I have noticed is the addition of the "Vortex" tube. In my experience that tube makes for a really nice performing regulator with its controlled venturi effect. The design is simple, dependable and easy to maintain, with no complicated "balanced" second stage extra parts... they just aren't needed. The MR12-III appears to be the same body as the II, but came with a composite front cover which saves a little weight. I have several of these and like them just as much as any of my newer, fancier single hose regs.
Jim,Jimmer wrote:Hi Greg,
I have heard that the MR-12's can be rebuilt with current Mares parts. Is there a breakdown somewhere that lists what parts are required for a rebuild?
Thanks,
Jim
Herman,Herman wrote:Greg, would a Titan/Conshelf service kit not work also? Based on what you posted I would assume it would with the exception of needing a new pin.
antique diver wrote:The only difference I have noticed is the addition of the "Vortex" tube. The design is simple, dependable and easy to maintain, with no complicated "balanced" second stage extra parts... they just aren't needed.
Greg,Greg Barlow wrote:I completely agree. Other than the VAD (Vortex Assisted Design), I am not aware of any other differences. The orifice diameter remains the same, as does the LP poppet assembly. The III did utilize silicone in the second stage diaphragm and exhaust valve.
Greg
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