NTERNATIONAL STANDARD (Tso) 2434 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION-MEXKIYHAPOIHAY OPIAHW3ALIM HO CTAHIAPTW3ALIWH.ORGANISATION INTERNATIONALE DE NORMALISATION Compressed non-breathing air for use in aircraft Firstedition-1973-12-01 ISO 2434-1973 (E) UDC 629.13 : 621.602 Ref.No. ISO 2434-1973 (E) Descriptors :aircraft,compressedair,materials specifications,pressure Pricebasedon1page "cnn"tkijvu"tgugtxgf+s nniravintiInf FOREWORD Iso (the International Organization for Standardization) is a worldwide federation of national standards institutes (isO Member Bodies). The work of developing International Standards is carried out through ISO Technical Committees. Every Member Body interested in a subject for which a Technical Committee has been set up has the right to be represented on that Committee. International organizations, governmentai and non-governmental, in liaison with isO, also take part in the work. Draft International Standards adopted by the Technical Committees are circulated to the Member Bodies for approval before their acceptance as International Standards by the ISO Council. International Standard ISO2434 was drawnup by Technical Committee ISO/TC 20, Aircraft and space vehicles, and circulated to the Member Bodies in June1971. It has been approved by the Member Bodies of the following countries : Austria Italy Thailand Belgium ueder Turkey Brazil Netherlands United Kingdom Canada NewZealand U.S.A. Czechoslovakia Romania U.S.S.R. Egypt, Arab Rep. of South Africa, Rep. of India Spain The Member Body of the following country expressed disapproval of the document ontechnical grounds: France InternationalOrganizationforStandardization,1973 Printed in Switzerland. E"eqr[tkijvgf'd["WPG.E" <66"WVE*4246 nniravintkInf ISO2434-1973(E) INTERNATIONALSTANDARD Compressed non-breathing air for use in aircraft 3 CHARACTERISTICS 1 SCOPEANDFIELDOFAPPLICATION This International Standard specifies the pressure and 3.1 The air shall contain not more than a total of characteristics of non-breathingair, compressed in 0,005 mg of oil vapour and particulate matter per cubic oil-lubricated equipment, for use in aircraft. decimetre (or litre) of air at 15°c and 1 013 mbar (14.69lbf/in2) This International Standard is not intended to cover air for breathingpurposes or airfor use in oxygen systems. 3.2 The water content shall not exceed 0,02 mg per cubic 2 PRESSURE decimetre (or litre) of zir at 15°c and 1013mbar The compressed air supply pressure shali ensure charging of (14.69 Ibf/in2) NOTE -- The working pressures of aircraft compressed air systems currentily use are 241 bar (3500 lbf.in2) and 343bar 3.3 Any particulate matter in the air shall be capable of (4975 Ibf/in2) passing through a filter with a nomina! rating of 10 μm. NOTE - 1bar=100kN/m2= 100kPa 1 32<56<66"WVE4246