I saw where this was Nitrox compatible to 100%. In another Q&A here it's stated to be compatible to 40%. My friends say get one that's 100% (or 99%) Nitrox ready. Should I be considering this one if it's only 40% ready for NITROX?
JERRY H According to the Scubapro catalog, all SP regs are Nitrox ready up to a 40% mixture, up to 3300 PSI right out of the box. The two most common recreational diving nitrox mixes contain 32% and 36% oxygen. Nitrox with more than 40% oxygen is uncommon within recreational diving. I would also contact your local scuba dealer who should be a wealth of information.
My wife and I both use the MK25/G250V for both air and nitrox and have had no problems. We like it so much that we will buy the MK25 for our children when they start diving in a few years.
GREG H I have this regulator and used it for a week in Palau on Nitrox (32% mix). The regulator is Ntrox compatible and a very good performer. I understand the Scubapro makes a dedicated N2 kit for the MK25 but I doubt that you need it. If you have doubts, check out the Scubapro website and scubaboard website where there is some discussion of this reg.
RAUL N My Friend
This regulator is nitrox compatible.
There is no such thing as 40% compatible.
A regulator is Nitrox compatible or not.
If you buy this regulator(YES IT IS NITROX COMPATIBLE),you will be buying the best regulator in the world for this price.
NICOLAS P It is ready to be used with gas mixtures with up to 40% Oxygen right out of the box (in practice 50% is ok also). If you intend to use it with mixtures with higher oxygen content up to 100% (pure O2) then it has to be oxygen serviced, which involves oxygen cleaning and replacement of certain parts with others that are 100% oxygen compatible. These are mainly all rubber o-ring being replaced by vitton ones. This is important for the 1st stage, but also performed on the 2nd stage. If this is done with original scubapro parts, then the black cap on the 1st stage is replaced by a green one denoting 100% oxygen compatibility. Once converted to 100% oxygen you should not use with anything else than pure oxygen to preserve it's compatibility qualities. Thus you can use this reg for common nitrox mixes without any problems. The 100% O2 compatible should be reserved exclusively for oxygen deco rigs, and this can be converted at any scubapro official service shop should you ever need a dedicated pure oxygen reg.
STEVE C I believe what you are asking is if this reg is nitrox compatible and yes its fully compatible and as for the 40% you mention that is the blend of the nitrox not how compatible it is with nitrox
JOSHUA D I have had this regulator for three years now and have used it on more than a few NITROX dives. It is compatible. Perhaps what you were reading is that it is compatible up to a 40% oxygen mix? Which is all you are going to likely find as anything higher can be susceptible to fire. Normally your mix will be either 32% or 36% allowing you to go to a max depth of 34 or 29 meters respectively. The only time you are likely to use higher than 40% is in tech diving. This equipment must undergo special servicing and cleaning to ensure it doesn't catch fire using higher oxygen levels. You are also likely to spend more money for this equipment. In short, if you don't plan on tech diving (going below 40 meters, carrying multiple tanks, undergoing thousands of dollars in training, etc...) this regulator is great for any recreational diving to include NITROX.
CHARLES M No one uses 100% nitrox. That would be 100% Oxygen, which is posionous below 33 feet. The most common nitrox is 32% followed by 36%. The MK25/G250V is perfectly safe with those mixtures. Only commercial/technical divers are trained/certified past 40% nitrox.
IGOR P well if you using nitrox that is 50/50 or higher you should be using regulator that is O2 clean (what means is clean of any grease or petroleum based parts). and those regulators are colored with yellow and green surfaces.this is very good regulator and is ready to be used for nitrox up to 40% but not higher .you can clean it and label it but would not be cost effective, plus you could be using it only for nitrox and not for air dives, coz you would contaminated it, same way as nitrox scuba tanks.but you can buy regulator that is same kind and ready for nitrox and will save you headache and money... have a nice day ,and calm seas igor p.