MK2 or MK2+?

[Simpel]

Hi,
is it possible to recognize the age of a Scubapro MK2 by its serial number?
And can you tell whether it is an MK2 or MK2+?
I got it for 25 euros and want to learn how to carry out maintenance on it

 

[Mobulai]

Much more likely an mk2+ (digital serial number )

Service procedure and service kits should be the same (I think there was only a tiny difference between them and it was backwards compatible)

 

[Simpel]

ok
thanks for the info
i have already got the regulator checklist and regulator savvy
then let's have a look
intermediate pressure seems to be stable

 

[rhwestfall]

See what ScubaPro actually said in this thread:

Thread 'Difference between MK2 and MK2 Plus'

Jan 30, 2013

like to know the (1) gas delivery performance difference at depth and (2) physical difference as how to tell them apart
and
(3) be a bonus to know the internal difference.

• UaVaj
• Replies: 1
• Forum: SCUBAPRO

 

[halocline]

I bought a MK2 about 25 years ago when I was right out of OW class. To give an idea of how reliable they are, I had it rebuilt once to maintain the warranty (which cost about as much as the regulator itself) then once I got into servicing my own regs, I just left it alone. I used it occasionally for the next two decades, during which it always maintained solid IP and never had a single problem. Last year I finally rebuilt it, only because I wanted to O2 clean it for deco. It looked perfect inside. Those things are seriously bulletproof.

 

[rhwestfall]

I've got a gen1 (1963) still in working condition. I swapped out the skinny yoke for modern higher pressures, and it just keeps on going.

 

[Nemrod]

I use a Mark 2 Evo and a Mark 11 as my main two first stages for travel because they are simple, reliable, compact and pack light. They also perform brilliantly.

And then along came the Mk2 Evo:

 

[Simpel]

hey nemrod,

thank you very much.
I have written to Scubapro Germany.
They also told me that it is an MK2+.
Unfortunately, they couldn't tell me the age from the serial number.

I currently have an Atomic Z2 as my main regulator and an MK17G260 as a backup.
I got the Mk 2 super cheap and want to play around with it.
Do you have any tips for rinsing it when it has been in sandy, choppy water?
Now I have to see where I can get a cheap second stage.

 

[Nemrod]

hey Nemrod
Do you have any tips for rinsing it when it has been in sandy, choppy water?
Now I have to see where I can get a cheap second stage.

Hello Simpel. A couple of things, if you intend to use the Mark 2+ for diving, use a balanced second stage with it. For cleaning of any regulator set, rinse in freshwater, let some of the water run through the ambient ports. I recommend a solution or a spray bottle of Salt Off or Salt Away. I carry a small bottle with me and put a cap full in the sink or into a little spray bottle which I pack with me. I have also been known to use an air nozzle hooked to the BC hose to direct a jet of air into the ambient ports after rinsing. Sealed or not sealed, I like to get the salt water off of my equipment. I will also dip my second stages into the solution or spray it into the mouthpiece and rinse. At the end of the trip I will remove the covers and diaphragms from my second stages and rinse throughly and again use the Salt Off and allow to dry, if there is time, before packing up.

A Mark 2 is an exceptionably durable regulator, normal rinsing and care is all it really needs to live a long and happy life. And they make great stage regulators, a good Mark 2 is always useful.

For a second stage, find yourself a good G250.

A little bit of care goes a long ways.

 

[Nemrod]

Add a few other things, circa 1974 I was working as the shop boy at a Scubapro store. I recall being told many times that the Mark 2 has no OH interval, perhaps legend or opinion of the people I worked for but I distinctly recall a gentleman wearing a blue Scubapro jacket visiting and giving the shop a lecture on all of the (superior) Scubapro equipment then avalable. Of course, nowadays with litigious society it does. The Mark 2 has one O-ring and a seat. As long as it locks up at the specified IP vs tank pressure (being unbalanced) it is good to go. The concern when serviced is to avoid picking at the volcano orifice in pre-Evo units as the orifice is not replaceable. The big improvement for the Evo is the replaceable orifice and an increased flow rate. A Mark 2 of any era is cool!