The Mr. Heater Propane Two Stage Regulator ensures maximum safety while cooking. This regulator controls the propane gas flow from a gas cylinder. It offers excess flow protection in case of broken gas line. This regulator is built from metal, which ensures maximum degree of strength and sturdiness. This two stage gas regulator is rust resistant to further enhance its durability. It also has heat resistant and scratch resistant properties. The Propane Two Stage Regulator by Mr. Heater is suitable for commercial use. The regulator is lead-free and non-toxic, making it safe for you and your family. It is also CSA certified.