EN 738-1:1997

Pressure regulators for use with medical gases - Part 1: Pressure regulators and pressure regulators with flow metering devices

Publication date:   Mar 19, 2004

Scope

1.1 This Part of this European Standard applies to pressure regulators intended for the administration of medical gases in the treatment, management, diagnostic evaluation and care of patients and applies to the types of pressure regulator given in 1.1 a), b) and c) and to the types of flow metering devices given in 1.1 d) and e) for use with the following medical gases: - oxygen - nitrous oxide - air for breathing - helium - carbon dioxide - xenon - specified mixtures of the gases listed above - air for driving surgical tools - nitrogen for driving surgical tools a) High pressure regulators (up to 20 000 kPa) intended to be connected by the operator to high pressure gas cylinders; b) High pressure regulators (up to 20 000 kPa) that are an integral part of, or are permanently connected to, medical equipment (e.g. anaesthetic workstations, lung ventilators, resuscitators); c) Low pressure regulators (up to 1400 kPa) intended to be connected by the operator to the terminal units of medical gas pipeline systems; d) Flow metering devices that are integral with the types of pressure regulator described in 1.1 a) and 1.1 c); e) Flow metering devices that are not integral with the types of pressure regulator described in 1.1 a) and 1.1 c) but are not intended to be detached from the pressure regulator by the operator. 1.2 This standard does not apply to the following types of pressure regulator: a) High pressure and low pressure regulators that are an integral part of medical gas pipeline systems (see prEN 738-2); b) Pressure regulators integrated with cylinder valves (see prEN 738-3); c) Low pressure regulators, with or without flow metering devices that are an integral part of medical equipment (see prEN 738-4); d) Pressure regulators for use with suction services. (See EN ISO 10079-3)

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