Refrigerating systems and heat pumps - Qualification of tightness of components and joints (ISO 14903:2025); German version EN ISO 14903:2025
Abstract
This document specifies 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 the ISO 5149 series, including metal flexible piping. It specifies the level of tightness of the component as a whole and its assembly as specified by the manufacturer. It specifies additional requirements for mechanical joints that can be recognized as hermetically sealed joints. This document is applicable to joints of maximum DN 50 and components of internal volume of maximum 5 l and maximum weight of 50 kg. It is applicable to the hermetically sealed and closed components, joints and parts (e.g. fittings, bursting discs, flanged or fitted assemblies) used in the refrigerating installations, including those with seals, whatever their material and design are. This document does not apply to the tightness of flexible piping made from non-metallic material. This is covered in ISO 13971. Components tested before the date of publication of this document and found to comply with ISO 14903:2017 are considered to comply with this document.
Begin
2023-05-02
WI
00182102
Planned document number
DIN EN ISO 14903
Project number
04400361
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 - Safety and environmental requirements for refrigerating systems
draft standard
Refrigerating systems and heat pumps - Qualification of tightness of components and joints (ISO/DIS 14903:2023); German and English version prEN ISO 14903:2023
2023-09
Order from DIN Media
