Résumé
Specifies a test method under steady-state conditions when water flows through the valves. Also describes the method of reporting pertinent test data. The valve performance specifications presented are of such scope and accuracy as to assist irrigation system designers when comparing pressure losses through various types of irrigation valves. The measurement of pressure losses provides a means for determining the relationship between pressure loss and flow-rate through the valve.
Informations générales
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État actuel: AnnuléeDate de publication: 1993-02Stade: Annulation de la Norme internationale [95.99]
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Edition: 1Nombre de pages: 6
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Comité technique :ISO/TC 23/SC 18ICS :65.060.35
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Cycle de vie
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Actuellement
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00
Préliminaire
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10
Proposition
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20
Préparation
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30
Comité
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40
Enquête
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50
Approbation
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60
Publication
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90
Examen
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95
Annulation
Amendements
Proposent un contenu additionnel; disponibles à l’achat; non inclus dans le texte de la norme en vigueur.AnnuléeISO 9644:1993/Amd 1:1998
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00
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Révisée par
AnnuléeISO 9644:2008