ESAB’s Victor G-Series regulators feature color-coded knobs (green for oxygen, red for acetylene) that help prevent confusion, while the knobs’ ergonomic shape makes it easier to set pressure. A high-strength alloy bonnet provides nearly twice the yield strength of the previous brass bonnet. The G-Series also includes regulators for inert gas, as HVAC technicians use nitrogen to purge copper lines before brazing them, as well as to blow out condensate and debris.