Originally Posted by j_dogg
You say to stick with Norgren....aren't these the norgren r72m-2ak-rfn pressure regs?
Yes, they are Norgren compressed air regulators the lowest temp that they can operate at is -30 F. I spoke to Norgren online they DO NOT recommend using this for CO2 as flowing condensation could cause the seat to ice up and hold the it open and keep the pressure relief from opening. For Co2 they recommend the following R84-200-MNLA.
Use at your own risk, as for me I'll buy used and rebuild