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Normas DIN – AENOR
DIN EN ISO 4126-4:2009-11

DIN EN ISO 4126-4:2009-11

Safety devices for protection against excessive pressure - Part 4: Pilot-operated safety valves (ISO/DIS 4126-4:2009); German version prEN ISO 4126-4:2009 / Note: Date of issue 2009-11-16

Dispositifs de sécurité pour protection contre les pressions excessives - Partie 4: Soupapes de sûreté pilotées (ISO/DIS 4126-4:2009); Version allemande prEN ISO 4126-4:2009 / Attention: Date de parution 2009-11-16

Sicherheitseinrichtungen gegen unzulässigen Überdruck - Teil 4: Pilotgesteuerte Sicherheitsventile (ISO/DIS 4126-4:2009); Deutsche Fassung prEN ISO 4126-4:2009 / Achtung: Erscheinungsdatum 2009-11-16

Fecha Anulación:
2013-12 /Withdrawn
Equivalencias internacionales:

ISO/DIS 4126-4 (2009-11)

prEN ISO 4126-4 (2009-11)

Relación con otras normas DIN:

Reemplazada por: DIN EN ISO 4126-4:2013-12

Resumen:
This part of this European Standard specifies general requirements for pilot operated safety valves, other than those covered in Part 1, irrespective of the fluid for which they are designed. In all cases, the operation is carried out by the fluid in the system to be protected. It is applicable to pilot operated safety valves having a valve flow diameter of 6 mm and above which are for use at set pressures of 0,1 bar gauge and above. No limitation is placed on temperature. This is a product standard and it is not concerned with applications for pilot operated safety valves.
Keywords:
Control technique, Definitions, Design, Explosion protection, Hydraulic tests, Identification plates, Industrial fittings, Marking, Materials, Overpressure protection, Performance tests, Pneumatic tests, Pressure, Pressure control valves, Pressure overload, Pressure tests, Safety device, Safety devices, Safety requirements, Safety valves, Specification, Specification (approval), Testing, Type testing, Valves
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