ISO 13971:2012 PDF

Scope: 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.

ISO 13971:2012 Referenced Document

ISO 175 Plastics - Methods of test for the determination of the effects of immersion in liquid chemicals
ISO 5149-2 Refrigeration systems and heat pumps. Safety and environmental requirements. Part 2: Design, construction, testing, marking and documentation Modification 1*， 2024-04-20 Update
ISO 6605:2002 Hydraulic fluid power - Hoses and hose assemblies - Test methods

2012 ISO 13971:2012 Refrigeration systems and heat pumps - Flexible pipe elements, vibration isolators, expansion joints and non-metallic tubes - Requirements and classification