Please refer to my feedback as to the quality of my equipment. This as well as everything I sell goes through a complete service and safety inspection. Don't hesitate to ask. Ask questions and do a lot of research via google, yahoo, bing etc. These regulators require little maintenance.They contain no user serviceable parts. Do not try to repair them yourself. Any servicing requiring disassembly must be performed by a qualified repair technician. The item "Victor Journeyman CSR 450 oxygen CSR 460 acetylene gas regulators cutting torch" is in sale since Tuesday, May 28, 2019. This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Welding & Soldering Equipment\Welding\Gas Regulators, Valves & Accessories". The seller is "torch_services" and is located in Torchville,USA. This item can be shipped to United States.