DIN Standards Committee Refrigeration Technology
Refrigerating systems and heat pumps - Qualification of tightness of components and joints (ISO/FDIS 14903:2024); German version FprEN ISO 14903:2024
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
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
