Guide to Mares regulators from 2000-2020

[pisauron]

I don't think that's a Mares. It looks more like a ScubaPro Mk2 clone. What makes you suspect it is?

It was connected to Mares 2nd stages and has a Mares Yoke clamp. But that doesn't mean much though, it's easily changeable.

The design is defenetly piston unbalanced so mk2 style indeed. And it's probably from 90s to early 2000s.

Still no luck identifying it, could find anything in googlefu as well

 

[lowwall]

It was connected to Mares 2nd stages and has a Mares Yoke clamp. But that doesn't mean much though, it's easily changeable.

The design is defenetly piston unbalanced so mk2 style indeed. And it's probably from 90s to early 2000s.

Still no luck identifying it, could find anything in googlefu as well

Post it on its own thread. There are people here who can ID pretty much anything. Get a shot of the serial number or text if it exists. Also the end opposite the yoke clamp (end of the ambient chamber).

 

[pisauron]

Post it on its own thread. There are people here who can ID pretty much anything. Get a shot of the serial number or text if it exists. Also the end opposite the yoke clamp (end of the ambient chamber).

Sadly I tried that before with not much luck:

Thread 'Help identifying a regulator'

Dec 16, 2024

Hello,

I got this first stage regulator and wonder if anyone can identify it?

It was connected to Mares second stages and the yoke plastic cap says Mares. But I can't seem to find the name of it.

Can you help identify it?

M

• pisauron
• mares regulator
• Replies: 1
• Forum: Vintage Diving & Equipment

Maybe I didn't post in the right place?

 

[lowwall]

I'd post it on this forum - Regulators . Vintage reg folks are more into double hose and very early single hose stuff.

And definitely include more photos. There are many of these types of regs and the best chance of getting an ID will likely depend on some small detail. It might also help if there's a story to go with it since the reg itself isn't that interesting.

 

[pisauron]

I'd post it on this forum - Regulators . Vintage reg folks are more into double hose and very early single hose stuff.

And definitely include more photos. There are many of these types of regs and the best chance of getting an ID will likely depend on some small detail. It might also help if there's a story to go with it since the reg itself isn't that interesting.

Thank you,

I now have a new post. Lets hope anyone can help with it:

Thread 'Help identifying first stage regulator'

Jan 27, 2025

I got this one from an old timer looking to get rid of some old gear.
The regulator had an old Mares 2nd stage and an old R095 2nd stage connected to it.
The Yoke screw also says Mares.
I didn't find a Mares regulator looking like this, So these could have been changed at some point.

The serial number says "930772".
The regulator is an unbalanced piston design.

Can anyone identify it? Any info or lead would be welcomed.

Thanks

• pisauron
• first stage identification mares piston regulator vintage yoke
• Replies: 8
• Forum: Regulators

 

[glaterza]

Just found this. Skin Diver magazine, march 1996

 

[DutchSubAqua]

Hi,
Got curious wrt MR22. I have several ‘96-‘97-ish MR22’s. I did not open them yet. They probably contain the non removable orifice. Would that still be compatible with today’s MR22 poppet ? Understand geometry of orifice has changed. Not sure if that impacts compatibility.

 

[rsingler]

The new poppets will work with the old orifice. The key to good function is inspection of the volcano under magnification. Any scratches and it won't likely seal well.

 

[lowwall]

Hi,
Got curious wrt MR22. I have several ‘96-‘97-ish MR22’s. I did not open them yet. They probably contain the non removable orifice. Would that still be compatible with today’s MR22 poppet ? Understand geometry of orifice has changed. Not sure if that impacts compatibility.

All versions of the MR22 have a replaceable orifice. Only the earliest versions of the MR12 have a fixed orifice.

Every Mares diaphragm reg except those earliest MR12 and the subcompact MR42 can be updated with the current volcano and poppets (aka seat).

Note that there are now 2 different poppets. The older standard is now called the TriMat 2k22 30N and the new version is the TriMat 2k22 50N. You can easily identify the 50N because it has an extra metal bit on the back of the head.

These can be substituted for each other except that they each use a different spring [edit - and balance chamber, see discussions starting on next page] , so if you swap to a 50N poppet, you need to get the 50N spring. And vice versa. Annoyingly, the spring is not included in service kits.

 

[Zef]

All versions of the MR22 have a replaceable orifice. Only the earliest versions of the MR12 have a fixed orifice.

Every Mares diaphragm reg except those earliest MR12 and the subcompact MR42 can be updated with the current volcano and poppets (aka seat).

Note that there are now 2 different poppets. The older standard is now called the TriMat 2k22 30N and the new version is the TriMat 2k22 50N. You can easily identify the 50N because it has an extra metal bit on the back of the head.

View attachment 891412

These can be substituted for each other except that they each use a different spring, so if you swap to a 50N poppet, you need to get the 50N spring. And vice versa. Annoyingly, the spring is not included in service kits.

I would be interested to know what happens if the springs are interchanged. Any knowledge or speculation?

-Z