Оборудование для орошения.Дозирующие задвижки.Общие требования и методы испытаний
Название (англ.):
Irrigation equipment; Volumetric valves; General requirements and test methods
Описание (англ.):
Specifies general requirements and test method for valves capable of delivering automatically preset quantities of watrer for irrigation purposes, at vario rates of flow, by measuring volumetrically the quantities of water flowing through the valves. Applies to valves which are actuated by pipeline pressure alone, and do not require any external source of energy.