ISO 14557:2021
Fire-fighting hoses — Rubber and plastics suction hoses and hose assemblies
This document establishes the requirements and test methods for rubber and plastics suction hoses for fire-fighting purposes. These hoses can also be used manually to supply unpressurized water to the pump or for water discharge.
NOTE All pressures are expressed in megapascals and in bar (1 MPa = 10 bar).
Additional requirements are specified for hose assemblies, that is, hoses with couplings already fitted, where this is carried out by the hose manufacturer (see Clause 8).
Type A (rubber) hoses are intended for use at a minimum temperature of −20 °C and Type B (thermoplastics) hoses are intended for use at a minimum temperature of −10 °C.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
4.1 Type (hose construction)
4.2 Hose ends
5 Dimensions, tolerances and maximum mass
5.1 Inside diameter and maximum mass
5.2 Length and tolerance on length
6 Performance requirements of finished hose or hose assembly
6.1 Visual examination
6.2 Hydrostatic requirements
6.2.1 Deformation under proof pressure
6.2.2 Burst pressure
6.3 Adhesion (type A hoses only)
6.4 Low temperature flexibility
6.5 Ozone resistance (type A hoses only)
6.6 Bending resistance at ambient temperature
6.7 UV resistance (type B hoses only)
6.8 Loss in mass on heating (type B hoses only)
6.9 Vacuum resistance
6.10 Pressure impulse resistance (type B hoses only)
6.11 Reinforcement fracture resistance (type B hoses only)
6.12 Flexibility at ambient temperature
6.13 Vacuum resistance with flexing
7 Frequency of testing
8 Marking
8.1 Hose marking
8.2 Hose assembly marking
Annex A (normative) Test frequency for type tests and routine tests
Annex B (informative) Production acceptance tests
Annex C (normative) Pressure impulse test
Annex D (normative) Reinforcement fracture resistance test (type B hoses only)
Annex E (normative) Test for flexibility at ambient temperature
Annex F (normative) Test for vacuum resistance with flexing
Annex G (normative) Proof pressure test for hose assemblies
Bibliography
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
4.1 Type (hose construction)
4.2 Hose ends
5 Dimensions, tolerances and maximum mass
5.1 Inside diameter and maximum mass
5.2 Length and tolerance on length
6 Performance requirements of finished hose or hose assembly
6.1 Visual examination
6.2 Hydrostatic requirements
6.2.1 Deformation under proof pressure
6.2.2 Burst pressure
6.3 Adhesion (type A hoses only)
6.4 Low temperature flexibility
6.5 Ozone resistance (type A hoses only)
6.6 Bending resistance at ambient temperature
6.7 UV resistance (type B hoses only)
6.8 Loss in mass on heating (type B hoses only)
6.9 Vacuum resistance
6.10 Pressure impulse resistance (type B hoses only)
6.11 Reinforcement fracture resistance (type B hoses only)
6.12 Flexibility at ambient temperature
6.13 Vacuum resistance with flexing
7 Frequency of testing
8 Marking
8.1 Hose marking
8.2 Hose assembly marking
Annex A (normative) Test frequency for type tests and routine tests
Annex B (informative) Production acceptance tests
Annex C (normative) Pressure impulse test
Annex D (normative) Reinforcement fracture resistance test (type B hoses only)
Annex E (normative) Test for flexibility at ambient temperature
Annex F (normative) Test for vacuum resistance with flexing
Annex G (normative) Proof pressure test for hose assemblies
Bibliography