prEN ISO 13971
Refrigeration systems and heat pumps - Flexible pipe elements, vibration isolators, expansion joints and non-metallic tubes - Requirements and classification (ISO 13971:2012)
Draft Public enquiry
Comment end date
2025-08-05
Export comments
Project stage codes
1. Decision on WI Proposal
2. Projektas
3. Viešoji apklausa
From 2025-06-06
till 2025-08-05
4. Closure of enquiry
5. Submission to Formal Vote
Organisation
CEN Europos standartizacijos komitetasICS
27.080 - Heat pumpsForeignTC'S
CEN/TC 182Number of comments
0Comment start date
2025-06-06Scope
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.