i think if you specify the regulator and bottle is for CO2, it's a standard size, maybe about 1/2" threaded fitting. Usually there's a collar on the regulator that slips over the threads on the bottle and joins it to the reg.
HTH
Matt
i think if you specify the regulator and bottle is for CO2, it's a standard size, maybe about 1/2" threaded fitting. Usually there's a collar on the regulator that slips over the threads on the bottle and joins it to the reg.
HTH
Matt