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I have used a couple of Mk 20s for about six months now. I have also worked
on them quite a bit for servicing and conversion to oxygen service (which is
easy by the way). So far I have used them in combination with D400 second
stages or a Polar in the Scubapro Full Face using air/nitrox down to 60m.
Always worked very well and given me as much gas as I ever wanted. Mine are
the DIN type but they work well with A clamp adapters.

I have just installed the environmental sealing system and will be trying
that out in some very cold (unfortunately) water in the next few months.

It performs better than the Mk10 and 15 and is easier to work on. Like the
Mk 10 it is probably best worn with the turret end down for most headroom.
With a DIN connection you have a fairly low profile and rugged rig.


Mark Caney
Scubex, Cyprus

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