BS EN ISO 10524-4:2008

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Nomenclature
5 General requirements
  5.1 Safety
  5.2 Alternative construction
  5.3 Materials
  5.4 Design requirements
  5.5 Constructional requirements
6 Test methods
  6.1 General
  6.2 Test conditions
  6.3 Test method for outlet pressure
  6.4 Test methods for leakage
  6.5 Test method for mechanical strength
  6.6 Test method for accuracy of flow of pressure
       regulators fitted with flowmeters or flowgauges
  6.7 Test method for the stability of flow of pressure
       regulators fitted with flowmeters or flowgauges
  6.8 Test method for stability and accuracy of flow
       of pressure regulators fitted with fixed orifices
  6.9 Test method for loosening torque
  6.10 Test method for durability of markings and
       colour coding
7 Marking, colour coding, packaging
  7.1 Marking
  7.2 Colour coding
  7.3 Packaging
8 Information to be supplied by the manufacturer
Annex A (informative) - Typical examples of low-pressure
        regulators
Annex B (informative) - Rationale
Annex C (informative) - Reported regional and national
        deviations of colour coding and nomenclature
        for medical gases
Annex D (informative) - Environmental aspects
Annex ZA (informative) - Correspondence between this International
         Standard and Directive 93/42/EEC
Bibliography

Applicable to the types of low-pressure regulators listed below and intended to be used with the following medical gases in the treatment, management, diagnostic evaluation and care of patients: - oxygen; - nitrous oxide; - medical air; - helium; - carbon dioxide; - xenon; - specified mixtures of the gases listed above; - air for driving surgical tools; - nitrogen for driving surgical tools; - oxygen-enriched air.

1.1 This part of ISO10524 applies to the types of low-pressure regulators listed in 1.2 and intended to be used with the following medical gases in the treatment, management, diagnostic evaluation and care of patients: oxygen; nitrous oxide; medical air; helium; carbon dioxide; xenon; specified mixtures of the gases listed above; air for driving surgical tools; nitrogen for driving surgical tools; oxygen-enriched air. 1.2 The types of low-pressure regulators covered by this part of ISO10524 are as follows: low-pressure regulators intended to be connected to terminal units of medical gas pipeline systems complying with ISO7396-1; low-pressure regulators with integral flow-metering devices intended to be connected to terminal units of medical gas pipeline systems complying with ISO7396-1; low-pressure regulators intended to be connected to terminal units attached to pressure regulators complying with ISO10524-1 or ISO10524-3; operator-adjustable low-pressure regulators for air or nitrogen for driving surgical tools that are an integral part of a medical gas pipeline system complying with ISO7396-1. 1.3 This part of ISO10524 does not apply to low-pressure regulators integrated within anaesthetic and respiratory equipment.