1. SCOPE

1.1 This standard prescribes requirements and test method for Types 1, 2 and 3 of non-percolating lay flat delivery hoses for firefighting purposes, which are intended for use at working pressures not exceeding 15 kgf/cm2 of nominal sizes 38, 50, 63 and 70 mm.

NOTES

1 The working pressure of the hoses in service will not normally exceed 8 kgf/cm2, but they can be used at pressures up to 15 kgf/cm2, for example when connected to high rise mains.

2 All pressure values specified in this standard are gauge pressures.

3 Annex H gives recommendations for the pressure testing ofhoses in service.

4 Annex I specifies the minimum frequency of tests.

2. REFERENCES

The following standards contain provisions which through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to this revisions and parties to agreement based on the standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below:

397 Methods for statistical quality control during production

(Part 1) : 2003 Control charts for variables

(Part 2) : 2003 Control charts for attributes

443 (Part 1) : 2017/ISO 7326 : 2006 Methods of test for rubber and plastics hoses: Assessment of ozone resistance under static conditions (third revision )

(Part 3) : 2017/ Hydrostatic testing (third revision) ISO1402 : 2009

715 (Part 2) : 1976 Coated abrasives: Part 2 Special and Mechanized applications

3400 (Part 6) : 2012 Methods of test for vulcanized rubber: Part 6 Determination of the effect of liquids

4905 : 2015 Random sampling and randomization procedures (first revision)

7503/ISO 1382 : 2012 Glossary of terms used in rubber industry (second revision)