EVS-EN ISO 2503:2009

This International Standard specifies requirements for single or two-stage pressure regulators without flow-metering devices for connection to gas cylinders used for -  compressed gases up to 300 bar 1) (30 MPa), - dissolved acetylene, -  liquefied petroleum gases (LPG), -  methylacetylene-propadiene mixtures (MPS), and -  carbon dioxide (CO2), for use in welding, cutting and allied processes. It does not cover pressure regulators having a nominal outlet pressure p2 > 20 bar. This International Standard also specifies requirements for single or two-stage pressure regulators with flow-metering devices for connection to gas cylinders used for -  compressed gases or mixtures up to 300 bar (30 MPa), and -  carbon dioxide (CO2),