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ISO 9635-4:2006

Agricultural irrigation equipment -- Irrigation valves -- Part 4: Air valves

Üldinfo
Kehtetu alates 14.11.2014
Tegevusala (ICS grupid)
65.060.35 Niisutusseadmed
Direktiivid või määrused
puuduvad
Standardi ajalugu
Staatus
Kuupäev
Tüüp
Nimetus
14.11.2014
Põhitekst
Põhitekst
Põhitekst
ISO 9635:1990
Põhitekst
ISO 11419:1997
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.
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