Pneumatic yoke regulator??

[bill]

Hi everyone......
I'm new here and hate to ask what may be a dumb question but I can't find an answer using the search mode.... I have a new single hose reg that I have owned for maybe 25 years..
It has no markings that I can see. It looks kind of like a scubapro with one difference. The yoke is pneumatic, that is, it's held to the valve by air pressure..
Does anyone have any idea what this is?? I had forgotten it until I was cleaning out my closet and came across it again.
Hate to make my first post a question...but thanks for looking.......
Bill

[luis]

It is a Scubapro Mark VI.
It is the same as the Mark V, but with pneumatic yoke.
Parts for the Mk V are available.
I own several Mk V.

Be careful with your fingers and that yoke.

[bill]

Thanks Luis........I started diving in the 1960's and am always finding stuff that I had forgotten about.......I found a 'new' MK 2 in the closet also..

[luis]

If I recall correctly, the Scubapro Mark 6 was sold in the early 70’s (around 72, maybe 73 or 74). I don’t think it was around for more than a year, maybe two.

Scubapro used the same yoke in a tank checker at the same time period.

During that same year Scubapro also had another type of pneumatically actuated yoke for a tank checker that was substantially more dangerous. Where this one you pull open and a spring holds it in place until the air pressure locked in place, the other one you had to hold the tank checker against the valve O-ring and open the valve slowly. The air pressure moved a piston with the O-ring seating ring to close the yoke. This happen kind of fast and if you had a finger in the wrong place it could be crunched into nothing. The impact force was severe enough that I remember it damaging the chrome out of some valves.

Ahh…The days of innovation and risk taking. There were some crazy and dangerous ideas, but I guess that is the price you pay for any kind innovation (whether it is good or bad). Now days the biggest risk they take is on some wild color scheme.