BS 5409-2:1978

Foreword
Cooperating organizations
Specification
1. Scope
2. References
3. Material
4. Designation of tubing
5. Dimensions
6. Design criteria for safe maximum working pressures,
     minimum installation radii and short-time burst
     pressure
7. Physical characteristics
8. Special requirements for heat and light stability
9. Resistance to liquids
10. Frequency of testing
11. Marking
Appendices
A. Methods of conditioning tubing and moulded test
     sheets prior to testing
B. Method for the determination of melting point
C. Method for the determination of burst pressure
D. Method for the determination of water absorption
E. Methods of heat ageing
F. Method for falling weight testing
G. Method for the determination of low temperature
     flexibility
H. Method for the determination of the effect of
     artificial exposure
J. Method for the determination of the change in
     tensile properties due to immersion in liquids
K. Method for the determination of the permeability
     to fuel
L. Method for the determination of the change in
     volume due to immersion in liquids
M. Method for the determination of the resistance to
     sulphuric acid of density 1275 kg/m cubed (battery
     acid)
N. Method for the determination of the resistance to
     zince chloride solution
P. Method for the determination of the resistance to
     brake/clutch fluid
Q. Method for the determination of the resistance to
     methanol
Tables
1. Physical requirements for material
2. Tubing dimensions: light duty grade
3. Tubing dimensions: medium duty grade
4. Tubing dimensions: heavy duty grade
5. Safe maximum working pressure at various
     temperatures, and minimum installation radius:
     light duty grade of plasticized nylon tubing
6. Safe maximum working pressure at various
     temperatures, and minimum installation radius:
     medium duty grade of plasticized nylon tubing
7. Safe maximum working pressure at various
     temperatures, and minimum installation radius:
     heavy duty grade of plasticized nylon tubing
8. Safe maximum working pressure at various
     temperatures, and minimum installation radius:
     light duty grade of unplasticized nylon tubing
9. Safe maximum working pressure at various
     temperatures, and minimum installation radius:
     medium duty grade of unplasticized nylon tubing
10. Safe maximum working pressure at various
     temperatures, and minimum installation radius:
     heavy duty grade of unplasticized nylon tubing
11. Pressure factors at various temperatures for
     plasticized and unplasticized nylon tubing
12. Short-time burst pressure for plasticized nylon
     tubing at 23 deg C
13. Short-time burst pressure for unplasticized nylon
     tubing at 23 deg C
14. Type tests
15. Quality control tests
16. Immersion times for boiling water conditioning
17. Slot width of falling weight apparatus
Figure
1. Schematic drawing of the falling weight apparatus

Specifies tube dimensions, working pressures, installation radii, methods of test for three grades of nylon tube.