V42 or MR42? how to tell?

[ThomasR]

I just bought a proton metal with a 42 first stage off ebay (including all maintanance notes), only thing is, i'm not sure if it has a V42 or MR42 first stage.

i hear that they performe similarly, but am only curious.

the reg has a simple black ring at the top, not the cap on the newer ones.

sn: VQ12685

thanks in advance!

 

[Greg Barlow]

If you post a photo of the 1st stage, I can tell you for certain.

Greg Barlow

 

[ThomasR]

this is where i found it:
Ademautomaat 1ste + 2de trap, Sport, Antwerpen | Kapaza

the front view is basically plain metal with a black mares sticker

 

[Greg Barlow]

That is a V42. It used the SCS (Spherical Core Seal System) for the HP valve assembly. The MR42 uses a tri-material HP valve, that is very similar to the ones used in other current Mares diaphragm regs. You cannot convert a V42 into a MR42, but there is no need to do so. Parts will be available for the V42 for a long time.

Greg Barlow

 

[ThomasR]

great! thans a lot Greg!

 

[Zak OHara]

Thanks for responding Greg.

Best,