ISO 7369:2020 pdf download.Pipework一Metal hoses and hose assemblies一Vocabulary
1 Scope
This document defines current terms concerning metal hoses, metal hose assemblies and component parts.
This document applies to:
a) stripwound metal hoses and hose assemblies;
b) corrugated metal hoses and hose assemblies.
NOTE 1 These hoses can be used braided, covered or lined.
NOTE 2 Equivalent terms in English, French, German and Dutch are given in Annex A.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
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://www.electropedia.org/
3.1 General
3.1.1 metal hose
metal duct, generally of circular or polygonal section, able to withstand repeated bending without damage
3.1.1.1 stripwound metal hose
hose manufactured from a helically wound pre-lormed strip, generally with a right-hand lead, where the turns, with or without packing (3.2.1.2), are connected together by single or double overlapping and flexibility (3.1.11) is obtained by sliding adjacent turns over each other
3.1.1.2 corrugated metal hose
pressure-tight hose made from tube or from strip (3.2.1.1) with corrugations, helicoidal or annular to the axis of the hose, made by deforming the metal, and where flexibility (3.1.11) and pliability (3.1.12) are obtained by bending of the corrugations
3.1.2 metal hose assembly
assembly of a metal hose (3.1.1) with its end fittings (3.2.2.4)
31.3 nominal pressure
PN
numerical designation which is a convenient rounded number for reference purposes
Note 1 to entry: This defined number is a dimensionless number indirectly related to a pressure value in bar (lbar=O,1 MPa).
Note 2 to entry: The definition is adapted from ISO 7268. See also EN 1333.
3.1.4 maximum operating pressure
maximum pressure that may be reached in an installation
Note 1 to entry: Care should be taken to ensure that both the temperature and the pressure are quoted together.
3.1.5 design pressure
maximum pressure at the design temperature for which the hose assembly needs to be designed, as specified by the customer
Note 1 to entry: The design pressure in an installation should be equal to or higher than the maximum operating pressure (3.1.4).
3.1.6 maximum allowable pressure
maximum pressure at the design temperature for which the hose assembly is designed, as specified by the manufacturer
Note 1 to entry: The maximum allowable pressure should be equal to or higher than the design pressure (3.1.5).
Note 2 to entry: The maximum allowable pressure should be lower than or equal to the lowest value of the maximum allowable pressures of its components.
Note 3 to entry: Care should be taken to ensure that both the temperature and the pressure are quoted together.
3.1.7 burst pressure
pressure reached before any part of the hose assembly fails by leakage or rupture of any of the components
3.1.8 test pressure
differential pressure to which the hose assembly or the component is subjected to during a test at ambient temperature
3.1.9 maximum allowable temperature
maximum temperature at the design pressure (3.1,5) for which the hose assembly is designed, as specified by the manufacturer
3.1.10 minimum allowable temperature
minimum temperature at the design pressure (3.1.5) for which the hose assembly is designed, as specified by the manufacturer.ISO 7369 pdf download.