scope:

1.1 * This International Standard specifies requirements for low-pressure hose assemblies intended for use with the following medical gases: - oxygen; - nitrous oxide; - medical air; - helium; - carbon dioxide; - xenon; - specified mixtures of the gases listed above; - oxygen-enriched air; - air for driving surgical tools; - nitrogen for driving surgical tools; - vacuum. It is intended in particular to ensure gas-specificity and to prevent cross-connection between systems conveying different gases. These hose assemblies are intended for use at maximum operating pressures of less than 1 400 kPa. 1.2 This International Standard specifies the allocation of non-interchangeable screw-threaded (NIST) connectors, diameter-index safety system (DISS) connectors and sleeve indexed system (SIS) connectors to medical gases and specifies the dimensions of non-interchangeable screw-threaded (NIST) connectors. 1.3 This International Standard does not specify: - requirements for coaxial hoses used for the supply and disposal of air for driving surgical tools; - requirements for electrical conductivity. 1.4 This International Standard does not specify the intended uses of hose assemblies. NOTE - Some examples of intended use specified in other International Standards are as follows: a) between a terminal unit and medical equipment (ISO 9170-1, IEC 60601-2-12[7], IEC 0601-2-13[8]); b) between the fixed pipeline system and a terminal unit of that system (ISO 7396-1[10], ISO 61197[13]); c) between a terminal unit and a second terminal unit (ISO 7396-1); d) between an emergency supply and an emergency and maintenance inlet point of a pipeline system (ISO 10524-1[12], ISO 7396-1); e) between an emergency supply and medical equipment (ISO 10524-1, ISO 10524-3[16], IEC 60601-2-12, IEC 60601-2-13).