ISO 10502 pdf download – Aerospace-Hose assemblies inpolytetrafluoroethylene (PTFE) for useup to 232°C and 10 500 kPa- Technical specifications and requirements.
3.3.2 Inner tube
The mner tube shall be of a seamless construction of virgin PTFE resin of uniform gauge; it shall have a smooth bore and shall be free from pitting or projections on the Inner surface. Additives may be included In the compound from which the tube is extruded,
3.3.3 Reinforcement
The reinforcement shaM consist of corrosion-resistant steel wires conforming to the applicable specifications given in 3-2.2. The wires 5hall be arranged on the outside surface of the inner tube so as to provide sufficient strength to ensure compliance with the requirements of this International Standard.
Broken or missing reinforcing wires or buckled wires more than 1,5mm (0.06 in) above the outside diameter surface shall be cause for rejection. Crossed-over reinforcing wires need not be cause for rejection of the hose assembly.
3.3.4 Fittings
3.3.4.1 General
It shall be proven that all fittings comply with the requirements of this International Standard The hose attachment fitting may be of a permanent or of a reusable design.
Unless otherwise specified by the purchaser, the hose assembly end fittings shall have 24’ cone fittings.
3.3.4.2 Insert fittings
Insert fittings shall be manufactured in one piece wherever possible. Those constructed of more than one piece shall have either welded joints using butt-weld or lap-weld design, or braze pints using lap-braze design, fabricated from annealed corrosion-resistant steel, titanium or aluminium alloy tubing. Welded and redrawn tubing (materials No. 8 and No. 9: see Annex A) may be used for corrosion-resistant steel.
3.4 Inner tube requirements
3.4.1 Density and relative density
The relative density of the hose inner tube shall not exceed 2,210 glcm3 (0.0798 lb/in3) when tested in accordance with ISO 7258. eIther method Aor method B (as specified in ISO 88291). The density shall not exceed 2.155 g/cm3 (0.0779 lb/in3) when tested in accordance with ISO 7258, method C (as specified in ISO 8829-1).
a) the assembly manufacturers name ortrade mark, and the nun,bero(this International Standard (i.e. ISO 10502);
b) the complete hose assembly part number;
C) the noniwal pressure. 10 500 kPa (1 523 psl) or as apphcable according to Table 3;
d) the operating temperature, 232 C (450 F) or 135 C (275 F) (as applicable), if required;
a) the pressure test symbol, PT;
1) the date of manufacture of the hose assembly, expressed in terms of month and year, or the batch number;
9) fire resistance type according to Iso 2685 (as applicable),
3.10 Workmanship
3.10.1 General
The hose assembly, including all parts, shall be constructed and finished in a thoroughly workmanlike manner All surfaces shaM be free from burrs and sharp edges.
3.10.2 DimensIons and tolerances
All pertinent dimensions and tolerances, where interchangeability, operation or performance of the hose
assembly may be affected, shall be specifIed on all drawings.
3.10.3 Cleaning
All hose assemblies shall be free from oil, grease, dirt, moisture, cleaning solvents and other foreign materials. both internally and externally.
Hose assemblies shall be inspected as follows when properly cleaned.
a) Visually inspect hose assembly ends for installation of plug or cap at fitting. Both ends should be firmly capped. An uncovered fitting nipple end shall be cause for relection.
ISO 10502 pdf download – Aerospace-Hose assemblies inpolytetrafluoroethylene (PTFE) for useup to 232°C and 10 500 kPa- Technical specifications and requirements
