The Fisher 630 Big Joe regulators are spring-loaded, direct-actuated pressure reducing valves, available in NPS 1 and 2 / DN 25 and 50 body sizes, and are rated for 103 bar maximum inlet pressure and 0.21-34.5 bar outlet pressure. The 630 can be used with natural gas, air or a variety of other gases for applications such as agricultural first stage cranes or industrial high pressure compressors. They can be converted into a safety valve during operation.