NF EN ISO 3949

Le présent document spécifie les exigences pour deux types de tuyaux et flexibles thermoplastiques à armature textile dont la pression maximale de service est comprise entre 69 bar et 345 bar. Ces tuyaux sont destinés au transport des liquides hydrocarbures ainsi que des fluides hydrauliques synthétiques dans une plage de températures allant de - 40 °C à + 100 °C. Ce document ne contient pas d'exigence sur les raccords. Il se limite aux performances des tuyaux et flexibles.

<p>This document specifies requirements for three types of textile-reinforced thermoplastics hose and hose assembly of nominal size from 3,2 to 25. Each type is divided into two classes dependent on electrical conductivity requirements.</p> <p>They are suitable for use with:</p> <p>— oil-based hydraulic fluids HH, HL, HM, HR and HV as defined in ISO 6743‑4 at temperatures ranging from −40 °C to +93 °C;</p> <p>— water-based fluids HFC, HFAE, HFAS and HFB as defined in ISO 6743‑4 at temperatures ranging from 0 °C to +60 °C</p> <p>— water at temperatures ranging from 0 °C to +60 °C.</p> <p>This document does not include requirements for end fittings. It is limited to the performance of hoses and hose assemblies.</p> <p>NOTE It is the responsibility of the user, in consultation with the hose manufacturer, to establish the compatibility of the hose with the fluid to be used.</p>