NA 044

DIN Standards Committee Refrigeration Technology

Project

Refrigerating systems and heat pumps - Qualification of tightness of components and joints - Amendment 1 (ISO 14903:2017/DAM 1:2022); German version EN ISO 14903:2017/FprA1:2022

Abstract

This document provides 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 relevant parts of 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 document. 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 characterize 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 document specifies additional requirements for mechanical joints that can be recognized as hermetically sealed joints.

Begin

2020-10-13

WI

00182091

Planned document number

DIN EN ISO 14903/A1

Project number

04400332

Responsible national committee

NA 044-00-01 AA - Safety and environment protection  

Responsible european committee

CEN/TC 182/WG 9 - Tightness of components  

Responsible international committee

ISO/TC 86/SC 1/WG 1 - Safety and environmental requirements for refrigerating systems and heat pumps  

draft standard

Refrigerating systems and heat pumps - Qualification of tightness of components and joints - Amendment 1 (ISO 14903:2017/DAM 1:2022); German and English version EN ISO 14903:2017/prA1:2022
2022-06
Order from Beuth Verlag

previous edition(s)

Refrigerating systems and heat pumps - Qualification of tightness of components and joints (ISO 14903:2017); German version EN ISO 14903:2017
2017-12

Order from Beuth Verlag

Contact

Ludwig Reichelt

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10787 Berlin

Tel.: +49 30 2601-2951
Fax: +49 30 2601-42951

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