Old MK 2 Scubapro Regulator

[mick allein III]

I have an old 2LP Port SP MK2 regulator. Anyone have a the schematics for it. Thanks much.


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[redacted]

I have an old 2LP Port SP MK2 regulator. Anyone have a the schematics for it. Thanks much.


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Basically, it should be the same as the current Mk2 except the the yoke nut is probably female threading rather than the current male threading. This, of course, makes quite a difference in the body configuration and eliminates an o-ring. The main spring, piston, and associated o-rings should be the same. I have an older Mk3 with that old 2-LP port configuration that makes a living on my pony bottle.

 

[mick allein III]

awap most helpful. Do you use trilube christolube? Or is there a cheaper alternative? This is looking at pool service or a pony.


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[redacted]

awap most helpful. Do you use trilube christolube? Or is there a cheaper alternative? This is looking at pool service or a pony.


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I use Tribolube but silicone should work fine with air.

 

[agilis]

I have a very old Mk2 (female thread yoke nut) that hangs in my garage attached to a 30 cu ft tank. It has been used primarily for inflating tires and air cleaning parts for the past several decades, but I would not hesitate to dive with it. Clean as a whistle. The tire valve attachments had to be replaced, but not the regulator. Rebuilt only once with new o rings about 10 years ago. It really didn't seem to need anything, really. Perfect.

 

[diversteve]

There's a couple Mk2 manuals listed here: https://divestock.com/files/regulator-manuals/

 

[Rich Keller]

View attachment MK2 Plus Repair Guide-1.pdf

 

[Couv]

This has the o-ring sizes annotated onto the diagram. Note item 8 does not exist on all MK2 first stages.

 

[mick allein III]

Thanks all. Most helpful. Where do you all get your replacement o rings or do you just use a newer mk2 Kit?


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[Rich Keller]

Use this and the schematic that couv provided to find the right size. Most can be found at a welding supply store.

View attachment Scubapro O-ring Chart.rtf