ISO 7840:2021
Small craft — Fire-resistant fuel hoses
This document specifies general requirements and physical tests for fire-resistant hoses for conveying petrol or petrol blended with ethanol, and diesel fuel or diesel fuel blended with FAME, designed for a working pressure not exceeding 0,34 MPa for hoses with inner diameter up to and including 10 mm, and 0,25 MPa for hoses up to 63 mm inner diameter in small craft.
It applies to hoses for small craft with permanently installed fuel systems. It does not apply to hoses entirely within the splash well at the stern of the craft connected directly to an outboard engine.
Specifications for non-fire-resistant fuel hoses are given in ISO 8469:2021. Specifications for permanently installed fuel systems are given in ISO 10088:2013.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
5 Hose inner diameter
6 Physical tests on finished hose
6.1 General
6.2 Test liquids
6.3 Bursting pressure
6.4 Vacuum-collapse test
6.5 Volume change in test liquids
6.6 Mass reduction of test hose
6.7 Fire resistance
6.8 Effect of ozone
6.9 Fuel permeation
6.10 Cold-flex test
6.11 Abrasion test
6.12 Dry heat resistance
6.13 Oil resistance test
6.14 Adhesion test
7 Marking
Annex A (normative) Fire test
Annex B (normative) Fuel permeation test
Bibliography
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
5 Hose inner diameter
6 Physical tests on finished hose
6.1 General
6.2 Test liquids
6.3 Bursting pressure
6.4 Vacuum-collapse test
6.5 Volume change in test liquids
6.6 Mass reduction of test hose
6.7 Fire resistance
6.8 Effect of ozone
6.9 Fuel permeation
6.10 Cold-flex test
6.11 Abrasion test
6.12 Dry heat resistance
6.13 Oil resistance test
6.14 Adhesion test
7 Marking
Annex A (normative) Fire test
Annex B (normative) Fuel permeation test
Bibliography