I know this is an old thread, but I think it is rather useful to add my question here than to spread the information in multiple threads.
I purchased a Voltrex 2nd which came with a M12 first. The M12 has an CWD installed and has an IP of 8.6 bars.
Since all my other Mares firsts are set to an IP of 10 bars, I would like to match the MR12 to them, so I keep my firsts and seconds interchangeable.
I found a neat tool for disassembling the CWD online, so that I can reach the adjust nut. Unfortunately the shipping from the US to Europe costs 2 times as much as a CWD new old stock, which includes Mares‘ (dis)assembly tool already.
So my question is, if the CWDs which are made specially for the MR12, MR22, V16 or MR32 respectively are interchangeable inbetween?
Otherwise you mentioned a lower IP of 138 psi +-3 for cold water diving. Is it recommended to lower the IP for Ice diving? I think I saw the same statement in the Mares service manual when installing the CWD, but thought it would be a typo.
If so, do I have to adjust the 2nd to this lower IP? Or do I match them to 10 bars (148 psi or so, I guess)?
Thank you