DIN Standards Committee Refrigeration Technology
Refrigeration systems and heat pumps - Flexible pipe elements, vibration isolators, expansion joints and non-metallic tubes - Requirements and classification (ISO 13971:2012); German and English version prEN ISO 13971:2025
Abstract
This International standard describes requirements, design and installation of flexible pipe elements (e.g., metallic flexible pipe, metallic flexible tube, vibration isolator, expansion joint) and non-metallic tube used in the refrigerant circuits of refrigerating systems and heat pumps. It also describes the requirements to qualify the tightness and permeability of non-metallic tubes (e.g., plastic) used in evaporating and/or condensing sides of refrigerating systems and heat pumps. This International standard does not apply to flexible pipes that are only occasionally stressed beyond the elastic limit (e.g., during repair work), or to joints that are free to rotate or hinge.
Begin
2025-02-24
WI
00182104
Planned document number
DIN EN ISO 13971
Project number
04400374
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
Refrigeration systems and heat pumps - Flexible pipe elements, vibration isolators, expansion joints and non-metallic tubes - Requirements and classification (ISO 13971:2012); German and English version prEN ISO 13971:2025
2025-06
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