ISO 9635-2:2014
Agricultural irrigation equipment — Irrigation valves — Part 2: Isolating valves
ISO 9635-2:2014 specifies construction and performance requirements and test methods for isolating valves, intended for operation in irrigation systems with water at temperatures not exceeding 60 °C, which can contain fertilizers and other chemicals of the types and concentrations used in agriculture.
It is applicable to isolating irrigation valves of DN 8 in diameter or greater, designed to operate in the fully open and fully closed positions, but which can also operate for extended time periods in any intermediate position.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Design requirements
5 Performance requirements
5.1 General
5.2 Mechanical strength
5.3 Watertightness and airtightness
5.4 Hydraulic characteristics
5.5 Resistance to chemicals and fertilizers
5.6 Endurance
6 Conformity assessment
6.1 General
6.2 Type tests
6.3 Control of production process and quality system
7 Marking
8 Packaging
Annex A (normative) Test method for resistance of valves to operating loads
Annex B (normative) Torque requirements for gate valves to be operated by ring key and bar
Annex C (normative) Test method for operation of valves
Annex D (normative) Test method for endurance of valves
Annex E (normative) Method for sizing operating element
Bibliography
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Design requirements
5 Performance requirements
5.1 General
5.2 Mechanical strength
5.3 Watertightness and airtightness
5.4 Hydraulic characteristics
5.5 Resistance to chemicals and fertilizers
5.6 Endurance
6 Conformity assessment
6.1 General
6.2 Type tests
6.3 Control of production process and quality system
7 Marking
8 Packaging
Annex A (normative) Test method for resistance of valves to operating loads
Annex B (normative) Torque requirements for gate valves to be operated by ring key and bar
Annex C (normative) Test method for operation of valves
Annex D (normative) Test method for endurance of valves
Annex E (normative) Method for sizing operating element
Bibliography