ISO 9261:2004 gives mechanical and functional requirements for agricultural irrigation emitters and emitting pipes, and, where applicable, their fittings, and provides methods for testing conformity with such requirements. It also specifies the data to be supplied by the manufacturer to permit correct information, installation and operation in the field. It is applicable 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), as well as 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.
Tämän julkaisun valmistelusta Suomessa vastaa SFS Suomen Standardit, puh. 09 149 9331.
Sisällysluettelo
Foreword
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
ISO 3501:1976 Assembled joints between fittings and polyethylene (PE) pressure pipes -- Test of resistance to pull out
ISO 8796:2004 Polyethylene PE 32 and PE 40 pipes for irrigation laterals -- Susceptibility to environmental stress cracking induced by insert-type fittings -- Test method and requirements
ISO 3501:1976 Assembled joints between fittings and polyethylene (PE) pressure pipes -- Test of resistance to pull out
ISO 8796:2004 Polyethylene PE 32 and PE 40 pipes for irrigation laterals -- Susceptibility to environmental stress cracking induced by insert-type fittings -- Test method and requirements