EN ISO 3949-2020 pdf free.Plastics hoses and hose assemblies — Textile-reinforcedtypes for hydraulic applications — Specification.
This document specifies requirements for three types of textile-reinforced thermoplastics hoses andhose assemblies of nominal size from 3,2 to 25.Each type is divided into two classes dependent onelectrical conductivity requirements.
They are suitable for use with:
oil-based hydraulic fluids HH,HL,HM,HR and HV as defined in lSO 6743-4 at temperatures ranging from -40C to 93 °C;
water-based fluids HFC,HFAE,HFAS and HFB as defined in ISO 6743-4 at temperatures rangingfrom 0 C to 60°c
water at temperatures ranging from 0 °C to +60 °C.
This document does not include any requirements for end fittings. It is limited to the performance ofhoses and hose assemblies.
NOTE lt is the responsibility of the user,in consultation with the hose manufacturer, to establish thecompatibility of the hose with the fluid to be used.
The following documents are referred to in the text in such a way that some or all of their contentconstitutes requirements of this document. For dated references, only the edition cited applies. Forundated references, the latest edition of the referenced document (including any amendments) applies.ISO 1402,Rubber and plastics hoses and hose assemblies — Hydrostatic testing
ISo 1817, Rubber, vulcanized or thermoplastic — Determination of the effect of liquids
ISO 4671, Rubber and plastics hoses and hose assemblies — Methods of measurement of the dimensions ofhoses and the lengths of hose assemblies
ISO 6803, Rubber or plastics hoses and hose assemblies — Hydraulic-pressure impulse test without flexingISo 7326:2016, Rubber and plastics hoses — Assessment of ozone resistance under static conditionsISO 8330,Rubber and plastics hoses and hose assemblies —Vocabulary
ISO 10619-1:2017,Rubber and plastics hoses and tubing — Measurement of flexibility and stiffiness 一Part 1: Bending tests at ambient temperature
ISO 10619-2:2017,Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness —Part 2: Bending tests at sub-ambient temperatures
ISo 17165-1,Hydraulic fluid power —Hose assemblies — Part 1: Dimensions and requirements.
Hoses shall consist of a seamless thermoplastic lining resistant to hydraulic fluids, with suitable textileyarn reinforcement and a thermoplastic cover resistant to hydraulic fluids, water and the weather.
For class 2 hoses, the cover shall not be perforated.The cover shall be orange (colour code RAL 2004).EN ISO 3949 pdf download.