BS ISO 11425:2018 pdf download.Rubber hoses and hose assemblies for automobile power- steering systems — Specification
1 Scope
This document specifies requirements for five types of hose and hose assembly used in automobile power-steering systems, the five types differing in their pressure ratings and volumetric expansion.They are for use with fluids in the temperature range −40 °C to +135 °C.
This document is based on performance tests. In order to take account of technological developments,no requirements are included for specific materials, detailed construction or manufacturing methods.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 1402, Rubber and plastics hoses and hose assemblies — Hydrostatic testing
ISO 2719, Determination of flash point — Pensky-Martens closed cup method
ISO 2909, Petroleum products — Calculation of viscosity index from kinematic viscosity
ISO 2977, Petroleum products and hydrocarbon solvents — Determination of aniline point and mixed aniline point
ISO 3016, Petroleum products — Determination of pour point
ISO 3819, Laboratory glassware — Beakers
ISO 4671, Rubber and plastics hoses and hose assemblies — Methods of measurement of the dimensions of hoses and the lengths of hose assemblies
ISO 4788, Laboratory glassware — Graduated measuring cylinders
ISO 4793, Laboratory sintered (fritted) filters — Porosity grading, classification and designation
ISO 6803, Rubber or plastics hoses and hose assemblies — Hydraulic-pressure impulse test without flexing
ISO 7326:2016, Rubber and plastics hoses — Assessment of ozone resistance under static conditions
ISO 8033, Rubber and plastics hoses — Determination of adhesion between components
ISO 8330, Rubber and plastics hoses and hose assemblies — Vocabulary
ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests
ISO 10619-2, Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness — Part 2:Bending tests at sub-ambient temperatures
ISO/TR 11340:1994, Rubber and rubber products — Hydraulic hose assemblies — External leakage classification for hydraulic systems
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 8330 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at http://w w w.electropedia.org/
3.1 hose assembly
hose with either permanent or re-usable end fittings attached
4 Types of hose
Hoses shall be one of the following five types:
a) Type 1: low-pressure hydraulic fluid return hoses and hose assemblies.
b) Type 2: medium-pressure low volumetric expansion hoses and hose assemblies.
c) Type 3: medium-pressure medium volumetric expansion hoses and hose assemblies.
d) Type 4: medium-pressure high volumetric expansion hoses and hose assemblies.
e) Type 5: high-pressure low volumetric expansion hoses and hose assemblies.
BS ISO 11425:2018 pdf download
