How do you fill C02 in a NOS bottle

[Dave King]

I have the NX Ntercooler chiller kit that uses a Spray bar that has C02 cooler the intercooler to drop the inlet temps. I can't find anyone to fill C02 into a Nitrous Bottle. I've gone to 7 different welding shops and everyone tells me it needs a C02 Valve. I can't find anyone to put a C02 Valve on it. I call Nitrous express and they tell me that they have "never" had a problem with filling CO2 into their bottles. I've drove all around town and talked to all the big companies and said they don't have a fitting to do it. Nitrous express says that their valve is a common valve that is used in the entire medical industry and that the welding shops don't want to fill it with C02 cause it has a nitrous logo on the bottle.


I didn't want to use Nitrous because I was leary of overspray nitrous going into the inlet of the supercharger. With 35 psi I dont want to take a chance of that.

Can anyone give me any direction in what I should do?

 

[Taffy]

Most welding shops will not do it because of liability. Try a paint ball gun shop. They fill CO2 bottles, and I am sure that they would have no prob filling a N2O bottle.

I wonder if the bottles, NO2 and CO2, have the same pressure rating. My CO2 bottles have a rating of 1800 psig stamped on them.