Chladící zařízení a tepelná čerpadla - Pružné potrubní prvky, tlumiče vibrací, dilatační spoje a nekovové trubky - Požadavky, konstrukce a montáž (Norma k přímému použití jako ČSN).
NORMA vydána dne 1.3.2026
Designation standards: ČSN EN ISO 13971
Classification mark: 145109
Catalog number: 522969
Publication date standards: 1.3.2026
The number of pages: 20
Approximate weight : 60 g (0.13 lbs)
Country: Czech technical standard
Kategorie: Technické normy ČSN
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