scubapro 1st stage identification

[redacted]

Scubapro yokes show up on ebay fairly regularly. They are usually the matted finish rather than the shiny chrome but will work fine. There are some folks using that light yoke on a 3000 psi tank but that much pressure could bend the yoke out of shape and cause a leak - nothing catastrophic.

 

[DA Aquamaster]

If the end of the swivel cap is rounded, it is probably an older Mk 3. If it is squarish in profile, it is probably a MK 2.

Later, the Mk 3 cap was squared off, but those caps also have the smaller SPEC kit ambient pressure holes and 3 LP ports.

The primary difference is in the piston with the Mk 2 having a larger piston with a bit less IP drop as the tank pressure falls.

I used to have a lot of left over SP yokes - from DIN conversions, but ran out a while ago. They do show up on e-bay and any heavy SP yoke from the late production Mk 5 to the current Mk 25 and other current Sp models will work on it.