This International Standard specifies requirements for low-pressure hose assemblies intended for use with the following medical gases:
- nitrous oxide;
- air for breathing;
- carbon dioxide;
- specified mixtures of the gases listed above;
- air for driving surgical tools;
- nitrogen for driving surgical tools;
- nitric oxide/nitrogen mixtures;
It is intended in particular to ensure gas-specificity and to prevent cross-connection between systems conveying different gases. These hose assemblies are intended to be used at pressures less than 1 400 kPa.
This International Standard specifies the allocation of non-interchangeable screw-threaded (NIST) connectors and diameter-index safety system (DISS) connectors to medical gases and specifies the dimensions of non-interchangeable screw-threaded (NIST) connectors.1)
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.
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, ISO 8835-1, ISO 10651-1);
b) between the fixed pipeline system and a terminal unit of that system (ISO 7396-1, ISO 11197);
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, ISO 7396-1);
e) between an emergency supply and medical equipment (ISO 10524, ISO 8835-1, ISO 10651-1).