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Normas DIN – AENOR
DIN EN ISO 14903:2016-05

DIN EN ISO 14903:2016-05

Refrigerating systems and heat pumps - Qualification of tightness of components and joints (ISO/DIS 14903:2016); German and English version prEN ISO 14903:2016 / Note: Date of issue 2016-04-08

Systèmes de réfrigération et pompes à chaleur - Qualification de l'étanchéité des composants et des joints (ISO/DIS 14903:2016); Version allemande et anglaise prEN ISO 14903:2016 / Attention: Date de parution 2016-04-08

Kälteanlagen und Wärmepumpen - Qualifizierung der Dichtheit der Bauteile und Verbindungen (ISO/DIS 14903:2016); Deutsche und Englische Fassung prEN ISO 14903:2016 / Achtung: Erscheinungsdatum 2016-04-08

Fecha Anulación:
2017-12 /Withdrawn
Equivalencias internacionales:

ISO/DIS 14903 (2016-04)

prEN ISO 14903 (2016-04)

Relación con otras normas DIN:

Reemplazada por: DIN EN ISO 14903:2017-12

Resumen:
This Standard is intended to describe the qualification procedure for type approval of the tightness of hermetically sealed and closed components, joints and parts used in refrigerating systems and heat pumps as described in ISO 5149. The sealed and closed components, joints and parts concerned are, in particular, fittings, bursting discs, flanged or fitted assemblies. The tightness of flexible piping made from non-metallic materials is dealt with in ISO 13971. Metal flexible piping are covered by this standard. The requirements contained in this document are applicable to joints of maximum DN 50 and components of internal volume of maximum 5 l and maximum weight of 50 kg. This document is intended to characterise their tightness stresses met during their operations, following the fitting procedure specified by the manufacturer, and to specify the minimal list of necessary information to be provided by the supplier of a component to the person in charge of carrying out this procedure. It specifies the level of tightness of the component, as a whole, and its assembly as specified by its manufacturer. It applies to the hermetically sealed and closed components, joints and parts used in the refrigerating installations, including those with seals, whatever their material and their design are. This International Standard specifies additional requirements for mechanical joints that can be recognised as hermetically sealed joints.
Keywords:
Bursting discs, Components, Connections, Definitions, Fittings, Freezing tests, Heat pumps, Impermeability, Leak tests, Mechanical linkages, Pressure tests, Refrigerating plants, Refrigeration, Specification (approval), Testing, Tightness, Training
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