Guide to Mares regulators from 2000-2020

[lowwall]

I haven't updated the main site. But I'm attaching the various technical bulletins that describe the changes starting with the ACT poppet (aka HP seat). Here's the chronology:

• 2015 - ITM 40 - introduces the ACT poppet which replaces the original Tri-Material poppet for all diaphragm first stages except the Abyss Navy II
• 2018 - [no bulletin] - ACT poppet renamed Trimat 2k18, but is otherwise unchanged.
• 2020 - TB 38 - a stronger spring (50N versus the original 30N) was introduced along with a redesigned poppet and balance chamber for the 28XR, 62X, 72X, and 82X. Regs can either use all the original parts or all the 50N parts. The redesigned poppet is named Trimat 50NCPL, while the original is renamed Trimat 2k18 CPL. Note: the 15X first stage got the 50N option starting in 2021, but only for new bodies. The bulletin describing this is at the end of the attachment.
• 2022 - TB 42-bis - the poppet gets a new seating surface and new designations: 2k22 30N CPL and 2k22 50N CPL. This technical bulletin lists all the service kits that come with the new poppet. Note that the first column of photos has an error. It shows the 30N and 50N springs, which were not changed, instead of the replaced poppets. The text is correct though.

Here's the previous and current generation of parts and service kits (sk):

• 46201784 Poppet Trimat 50N cpl replaced by 46201816 Poppet Trimat 2k22 50N CPL
• 46201575 Trimaterial Poppet 2k18 cpl replaced by 46201815 Poppet Trimat 2k22 30N CPL
• 46201355 sk 22X INT-DIN replaced by 46201827 sk 22X 2k22
• 46201370 sk 12S INT-DIN replaced by 46201828 sk 12S-2k22
• 46201572 sk 75XR DIN replaced by 46201829 sk 75XR-30N-2k22
• 46201580 sk 52X-15X-25XR INT DIN replaced by 46201830 sk 52X-15X-25XR-30N-2k22
• 46201739 sk 82X replaced by 46201831 sk 82X-30N-2k22
• 46201741 sk 52X/25XR AST replaced by 46201832 sk 52X/25XR AST-30N-2k22
• 46201744 sk NX 1ST 52X AST (EN 13949) replaced by 46201833 sk NX 1st 52X AST (EN 13949) 2k22
• 46201780 sk 72X AST replaced by 46201834 sk 72X AST-30N-2k22
• 46201820 sk 15X-HRZ-30N-AST replaced by 46201835 sk 15X-HRZ-30N-AST-2k22
• 46201792 sk 62X INT/DIN replaced by 46201836 sk 62X 2k22
• 46201787 sk 82x-50N replaced by 46201837 sk 82X-50N-2k22
• 46201789 sk 72x-AST-50N replaced by 46201838 sk 72X-50N-2k22
• 46201802 sk 15X-50N-AST replaced by 46201839 sk 15X-50N-AST 2k22
• 46201800 sk 15X-50N replaced by 46201840 sk 15X-50N 2k22
• 46201807 sk 15X-HRZ-50N-AST replaced by 46201841 sk 15X-HRZ-50N-AST 2k22
• 46201783 sk 28XR DIN/NX replaced by 46201860 sk 28XR-DIN-NX-2k22
• 46201818 sk 25XR-50N-TBP replaced by 46201862 sk 25XR-2k22

 

[Dubio]

Not sure what you are refering to by "Classic". The following site should provide what you need to service it:

Mares Regulator Service Information

If you don't think you can find a service manual to match, please post a picture of the 1st stages you will be working on so we can identify and provide further assistance.

-Z

I've been spending hours in that depository and it's awesome! Couldn't find this specific one though.

They literally read "Classic" on the body:

 

[Zef]

I've been spending hours in that depository and it's awesome! Couldn't find this specific one though.

They literally read "Classic" on the body:

That is a version with markings I had not previously seen before.

Use the MR22 Abyss service manual from1998/1999. Internally it will be the same.

The only thing that I am unsure of is whether your friend's first stage has the SCS hp seat or the volcano orifice HP seat. Either way, the SCS seat can/should be updated to the current volcano seat and poppet.

-Z

 

[Dubio]

That is a version with markings I had not previously seen before.

Use the MR22 Abyss service manual from1998/1999. Internally it will be the same.

The only thing that I am unsure of is whether your friend's first stage has the SCS hp seat or the volcano orifice HP seat. Either way, the SCS seat can/should be updated to the current volcano seat and poppet.

-Z

I can find a chapter Ruby - MR22 in the 98/99 manual - that should be it right?

I can see that the First Stage Cover is loosened by an allen key in this manual which applies to my buddy’s stages. In the newer 22X it refers to a special tool at this point.

I’ll give it a shot!

Is the service kit the same as for the 22X then? Thinking of the latest change you mentioned a few posts above.

Thanks.
Tom

 

[lowwall]

I can find a chapter Ruby - MR22 in the 98/99 manual - that should be it right?

I can see that the First Stage Cover is loosened by an allen key in this manual which applies to my buddy’s stages. In the newer 22X it refers to a special tool at this point.

I’ll give it a shot!

Is the service kit the same as for the 22X then? Thinking of the latest change you mentioned a few posts above.

Thanks.
Tom

The 98/99 manual version is correct. However I would cross reference the 22X service instructions, which I just realized I don't have here. I'll attach it to a post later today.

Service kit is the same unless it has the old SCS poppet and orifice. The SCS poppet (shown below) looks very different so it will be obvious:

If you see one of these, you need an upgrade kit with a new poppet, spring and replaceable seat (aka volcano orifice). I think the most recent is part # 46201386.

 

[lowwall]

The 98/99 manual version is correct. However I would cross reference the 22X service instructions, which I just realized I don't have here. I'll attach it to a post later today.

It looks like the only 22X service instructions I have are in German. At least the images are better quality.

 

[Tanks A Lot]

This is the same manual, translated into English. Careful, as it is a machine translation.

 

[Dubio]

It looks like the only 22X service instructions I have are in German. At least the images are better quality.

Thanks! I’m German so that’s just fine!

 

[lowwall]

Thanks! I’m German so that’s just fine!

Guess I should have held the phone sideways

There's more where that came from at https://lowwall.eu5.org/sm2016_german.pdf

 

[Zef]

I can find a chapter Ruby - MR22 in the 98/99 manual - that should be it right?

I can see that the First Stage Cover is loosened by an allen key in this manual which applies to my buddy’s stages. In the newer 22X it refers to a special tool at this point.

I’ll give it a shot!

Is the service kit the same as for the 22X then? Thinking of the latest change you mentioned a few posts above.

Thanks.
Tom

The Ruby was a special edition of the Abyss 22 that had the SCS HP seat but the SCS poppet was made with a ruby gemstone instead of stainless steel.

As you have noted, the 2008 and beyond MR22 1st stage have a bit of a redesigned body that has a fitting on the bottom that requires a special 2-pin spanner.

Inside, everything is the same, with the exception of what others above have noted.....if your friend's 1st stage has the SCS HP seat and poppet it should be updated to the current version.

As lowwall mentioned, the current poppet seat upgrade kit is part # 46201386....it comes with the the 2K18 version of the HP poppet (with white sealing surface) as opposed to the newest version of Mare's HP poppet, the 2K22 version (with translucent sealing surface).

Here is a link where you can purchase the kit if required:

Mares ACT Trimat 2K18 Upgrade Kit

Mares ACT Trimat 2K18 Upgrade Kit

jonasdive.com

If you need to update your friend's 1st stage and can't otherwise find a kit and/or just want the latest parts for it, here are the specific part #s to look for separately:

HP volcano orifice - #46201541
volcano orifice o-ring - #46110107

plus
2K18 HP poppet (30N) - #46201575
Poppet spring for SK18 Poppet - #46201284 ~ (part# 46185011 will also work)

or
2K22 HP poppet (30N) - #46201815
Poppet spring for 2K22 HP poppet - #46201284 ~ (part# 46185011 will also work)

Other than the plug requiring the 2-pin spanner, if you have, or once you have the non-SCS poppet and orifice, the rest of the service procedures should be the same across the MR22/Abyss 1st stage manuals. To my knowledge the intermediate pressure specification remains unchanged across the years.

Good luck and don't hesitate to reach out if you have any more questions or run into any issues.

-Z