ISO 4126-1:2013 specifies general requirements for safety valves irrespective of the fluid for which they are designed. It is applicable to safety valves having a flow diameter of 4 mm and above which are for use at set pressures of 0,1 bar gauge and above. No limitation is placed on temperature. ISO 4126-1:2013 is a product standard and is not applicable to applications of safety valves.
Tämän julkaisun valmistelusta Suomessa vastaa Metalliteollisuuden Standardisointiyhdistys ry, puh. 09 19 231 (vaihde).
Sisällysluettelo
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and units
5 Design
5.1 General
5.2 Valve end connections
5.3 Minimum requirements for springs
5.4 Materials
6 Production testing
6.1 Purpose
6.2 General
6.3 Hydrostatic testing
6.4 Pneumatic testing
6.5 Adjustment of set or cold differential test pressure