Agricultural irrigation equipment. Emitters and emitting pipe. Specification and test methods

BS EN ISO 9261:2010 Agricultural irrigation equipment. Emitters and emitting pipe. Specification and test methods

BS EN ISO 9261 is an International Standard which gives mechanical and functional requirements for agricultural irrigation emitters and emitting pipes, and their fittings. It also provides methods for testing conformity with these requirements.

BS EN ISO 9261 also specifies the data to be supplied by the manufacturer to permit correct information, installation and operation in the field.

BS EN ISO 9261 applies to emitters, emitting and dripping (trickling) pipes, hoses, including collapsible hoses (“tapes”) and tubing of which the emitting units form an integral part, to emitters and emitting units with or without pressure regulation and with flow rates not exceeding 24 l/h per outlet (except during flushing), and to fittings dedicated to the connection of emitting pipes, hoses and tubing. It is not applicable to porous pipe (pipe that is porous along its entire length), nor does it cover the performance of pipes as regards clogging.

Contents of BS EN ISO 9261:

1 Scope

2 Normative references

3 Terms and definitions

4 Classification

4.1 Reusability (emitting pipes)

4.2 Type of pressure regulation

4.3 Type of operation at low pressure

4.4 Type of emitter connection to the pipe

4.5 Type of multiple-outlet emitter

5 Designation (emitting pipes

6 Marking

6.1 Emitting pipe

6.2 Emitter

6.3 Fittings

6.4 Packaging of emitting pipes

6.5 Packaging of fittings

7 Construction and materials

7.1 General

7.2 Dimensions (emitting pipe

7.3 Materials

7.4 Fittings (emitting pipe)

7.5 Connection to irrigation lateral (in-line emitter)

8 Test specimens and conditions

8.1 Test specimens

8.2 Order of tests

8.3 Test conditions

8.4 Accuracy of measuring devices

9 Test methods and requirements

9.1 Uniformity of flow rate

9.2 Flow rate as a function of inlet pressure

9.3 Determination of emitter/emitting unit exponent

9.4 Dimensions

9.5 Resistance to hydraulic pressure

9.6 Resistance to tension (emitting pipe)

9.7 Resistance to pull-out of joints between fittings and polyethylene reusable emitting pipes

9.8 Emitter pull-out

9.9 Watertightness of the emitter-pipe assembly

9.10 Resistance of polyethylene (PE) emitting pipe to environmental stress-cracking

10 Data supplied by manufacturer

Bibliography