BS 5409-1:1976

Foreword
Cooperating organizations
Specification
1. Scope
2. References
3. Material
4. Designation of tubing
5. Dimensions
6. Working pressures and installation radii
7. Physical characteristics
8. Special requirement for heat and light stability
9. Frequency of testing
10. Marking
Appendices
A. Method of conditioning tubing prior to test
B. Method for the determination of moisture absorption
C. Method for the determination of resistance to zinc
    chloride solution
D. Methods of heat ageing
E. Method for falling weight testing
F. Method for the determination of low temperature
    flexibility
G. Method for the determination of burst pressure
H. Method of exposure to heat and ultraviolet radiation
Tables
1. Tubing dimensions: light duty grade
2. Tubing dimensions: normal duty grade
3. Recommended working pressure at various temperatures
    and minimum installation radius: light duty grade
4. Recommended working pressure at various temperatures
    and minimum installation radius: normal duty grade
5. Pressure utilization factor at various temperatures
6. Burst test pressure
7. Type tests
8. Batch tests
9. Immersion times for boiling water conditioning
10. Slot width of impact test apparatus
Figure
1. Falling weight apparatus

Light and normal duty grades in a range of nominal outside diameters from 4 to 28 mm, for use with pneumatic installations and for fluid transfer.

This Part of BS 5409 specifies requirements for fully plasticized nylon (polyamide) tubing manufactured from nylon of either type 11 or type 12 and of nominal outside diameter from 4 mm to 28 mm, of two grades differentiated by the tubing wall thickness, and for use either in pneumatic installations or in fluid transfer, but excluding both use with beverages or foodstuffs and use in domestic central heating systems.