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According to Nuvair’s website they are good up to 300bar. Someone please correct me if I am wrong, but the MCH-3 looks to me like a MCH-6 without the 3rd stage. Some of the key components have the same part numbers between the two units so I’m guessing any Coltri dealer can get you parts. My only comment is that the fill rate of 1.1 CFM is pretty slow. Unless you are going to be able to get this very inexpensively, you might be better off going with an MCH6. Good luck
Thanks for the link
Compressor is for some one that wants to fill small tanks & cant use a mch6 with a gen set for power.
My view is to use a bauer s30 with a filter up grade.
But its all down to cost.
Can't seen anything to recommend about that. Its going to take an hour to fill one al80, then another hour to cool down before you can do another one. The MCH6 with a gas engine is vastly preferred for mobile use.
Filtration is way undersized like it is on all small compressors.
Nuvair mentions airguns first and scuba second for this unit. I have nothing against Coltri/Nuvair (have had nothing but great service from Nuvair when parts are needed, our 18yo MCH-32 is still running strong) seems this is designed more for the hobbyist airgunner than an individual diver, especially with the 1.1 scfm fill rate.