ISO 15886-4:2019
Irrigation equipment — Irrigation sprinklers — Part 4: Test methods for durability
This document specifies the conditions and methods for testing the durability of rotating sprinklers for irrigation.
The term sprinkler is used here in a broad generic sense and is meant to cover a wide variety of products as classified in ISO 15886-1, which applies to all irrigation sprinkler classifications having both static parts and moving parts during operation, as defined by the manufacturer.
For any given sprinkler, a wide range of nozzle configurations, operating conditions, and adjustments generates at least a theoretical need for a correspondingly large number of tests. Testing agencies and manufacturers can use interpolation techniques to reduce the number of actual test runs, provided accuracy standards are still being met.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Installation of sprinklers under test
5 Measurements
5.1 Accuracy of measurements
5.2 Pressure measurement
6 Test conditions
7 Tests to be performed before durability test
7.1 Resistance to hydrostatic pressure at ambient temperature
7.1.1 General
7.1.2 Metal sprinklers
7.1.3 Plastic sprinklers
7.1.4 Requirements
7.2 Water tightness
7.3 Flow rate as a function of inlet pressure
7.3.1 General
7.3.2 Test method
7.3.3 Non-regulated sprinklers
7.3.4 Regulated sprinklers
7.4 Trajectory height
7.5 Radius of throw and water distribution curve
7.6 Uniformity of rotation (for rotating sprinklers intended to rotate in a uniform manner)
8 Operating time of durability test
9 Examination of sprinkler after durability test
9.1 General
9.2 Construction of sprinkler and its parts
9.3 Resistance to hydrostatic pressure at ambient temperature
9.4 Flow rate as a function of inlet pressure
9.5 Trajectory height
9.6 Radius of throw water and distribution curve
9.7 Uniformity of rotation
9.8 Distribution characteristics
Bibliography
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Installation of sprinklers under test
5 Measurements
5.1 Accuracy of measurements
5.2 Pressure measurement
6 Test conditions
7 Tests to be performed before durability test
7.1 Resistance to hydrostatic pressure at ambient temperature
7.1.1 General
7.1.2 Metal sprinklers
7.1.3 Plastic sprinklers
7.1.4 Requirements
7.2 Water tightness
7.3 Flow rate as a function of inlet pressure
7.3.1 General
7.3.2 Test method
7.3.3 Non-regulated sprinklers
7.3.4 Regulated sprinklers
7.4 Trajectory height
7.5 Radius of throw and water distribution curve
7.6 Uniformity of rotation (for rotating sprinklers intended to rotate in a uniform manner)
8 Operating time of durability test
9 Examination of sprinkler after durability test
9.1 General
9.2 Construction of sprinkler and its parts
9.3 Resistance to hydrostatic pressure at ambient temperature
9.4 Flow rate as a function of inlet pressure
9.5 Trajectory height
9.6 Radius of throw water and distribution curve
9.7 Uniformity of rotation
9.8 Distribution characteristics
Bibliography