DS DS/EN ISO 2503
DS DSEN SO 2503 2009-SEP-03 Gas weldng equpment - Pressure regulators and pressure regulators wth flow-meterng devces for gas cylnders used n weldng cuttng and alled processes up to 300 bar 30 MPa
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This Standard specifies requirements for single or two-stage pressure regulators for connections to gas cylinders normally used for compressed gases up to 300 bar (30 MPa), for dissolved acetylene, for liquefied petroleum gases (LPG), methylacetylene-propadiene-mixtures (MPS) and carbondioxide (CO2).