Help Identifying Old Scubapro Reg

[Deleted]

I'm sure this will be an easy one for someone ... Can anyone help me identify this old Scubapro reg that was "abandoned" at my local dive shop recently? It seems to be a very basic unbalanced piston with 2 LP and 1 HP ports. I *think* it is an early Mark 2, but I have very limited experience with old Scubapro regs. Also, do any of the currently available Scubapro service kits work or "almost work" with the 1st or 2nd stage? Thanks. Sorry for the poor photo quality.

www.villagephotos.com/viewimage.asp?id_=8567947

[Linda]

Brad, the link asks for a member log in...

[Deleted]

My bad. This link should work:
www.villagephotos.com/pubbrowse.asp?selected=857436

[SeaRat]

This appears to be a Scubapro Mark III. That's froma 1970s catalog I have here at home. Here's what it says:

"MARK III REGULATOR
LAW COST RELIABILITY--A slightly smaller version of the dependable Mark II Regulator. The same benefits, on a reduced scale, make the Mark III a regulator that can be trusted and enjoyed for many sport diving endeaveors.

Cat. No. 103 Mark III Regulator"

It shows the rounded HP chamber. It has a downstream second stage that was not a remarkable breather, but adequate.

Although I do not know for sure, I would figure that the "O" rings and other internal features would be identical to the Mark II.


John

[Deleted]

Thanks. I appreciate the feedback. In which catalog year did you see the reg? Was that the first year it was produced? Also, would anyone happen to have a service diagram/parts breakdown for this reg? I imagine it's going to be very simple, but it would be nice to know in advance what do-dads and thingys I'm going to find when it all comes apart.

[SeaRat]

I've got the breakdowns, but I really don't think you'll need it. The first stage has 8 parts, including the three "O" rings, seat, spring, piston, sithered filter and retaining clip. The second stage has six parts inside; lever, nut, washer, demand seat stem, seat, and an "O" ring.

John

[SDM]

"What was the frist year it was produced?"

From the visual presentation you have offered I would concur that it is Probably a Mark 111.

The Mk 111 first appeared in the 1965 catalog on page 5 as part number 7104 price of $37.50,

In 1970 it found on page 18 and was listed as part number 103 with a price of $50.00. It should be noted that this was the last year that Scuba pro offered the regulators with a rubber wrap around neck strap.

In 1971 the Mk111 had the same part number but the price had increased to $55.00, the rubber wrap around neck strap had been removed and was not offered as an option. All Scuba Pro regulators of that year were equiped with a black poly proprolene lanyard which was some how was to be attatched via an electrical aligator clip to the divers equipment.

A visual examination reveals the absence of a neck strap or rudimentary component for a neck strap. Therefore, I would probably identify your Mk 111 and as being produced some time after 1970, and having a part number of 103.

"Does any one happen to have a service diagram/parts breakdown?"

Once again I concur. they were designed for simplicity and ease of mainenance.

Recall the era--

There was very little diving and/or dive shops out side of California, Florida, Texas and a few major cities.

Scuba Pro officals determined that the equipment had to be simple and repairable by a technician who had absolutely no training or factory repair courses and they had probably never seen a regulator until he became a Scuba pro dealer. Therefore, all the early Scuba Pro regulators, as was with several other companies, often enclosed a repair manual with the sale of a regulator. A true "do it yourself" system.

However, should you not feel comfortable in working on or repairing your unit I would strongly URGE you to contact a Qalified Scuba Pro repair center, or even return it to the factory for service, rather than trusting it to some self anoited "expert. "

SDM

30

[Deleted]

Thanks to everyone for all the info. The first stage is indeed a very simple, classic unbalanced piston, not unlike so many others. It cleaned up really well and will make for a fun little reg just to have around for demonstration purposes. I was mainly interested in the specs just to see the part numbers and how it maps against other Scubapro kits/spare parts I have access to in terms of o-rings, etc.. But no big deal. It should be no problem to scrounge the parts I need.

[SeaRat]

Brad,

I just looked, and I think most everything is interchangable. For instance, the number for the piston "O" ring is 101-3 for the Mark II, Mark III, Mark V and Mark VII. The seat on the Mark II and Mark III are the same, 102-4.

John