ISO 9635-4:2006 specifies construction and performance requirements and test methods for air 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 hydraulically operated air irrigation valves of DN 15 (1/2 inch) diameter or greater, designed to be directly operated, i.e. the force is applied to the obturator by the float, either directly or via a mechanical linkage. The valves can be operated by a force applied through an adjustable pilot valve.
Status: WithdrawnPublication date: 2006-11
Edition: 1Number of pages: 11
Technical Committee: ISO/TC 23/SC 18 Irrigation and drainage equipment and systems
- ICS :
- 65.060.35 Irrigation and drainage equipment
ISO 9635-4:2006Stage: 95.99
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