x Nissan Tanaka Corp. Venus DS-060 High purity gas regulators for CO2 vapor. The inlet fitting on these 2 high purity gas regulators would be compatible with a CO2 vapor gas cylinder with a CGA 320 valve connection. The outlet fitting on the gas regulator would accept a Swagelok 1/4" series tube fitting (i.e. Swagelok SS-400-1-4RT).