农业灌溉设备. 水头控制器

[中文适用范围]： 本文件规定了加压灌溉系统控制头（以下简称灌溉控制头）的组件和安装方法的要求，其公称尺寸不超过200毫米（灌溉控制头的公称尺寸或灌溉控制头的公称尺寸）成分）。 本文件仅适用于喷灌和微灌（微型喷头、滴灌等）灌溉控制头的地上组件。 本标准适用于基本灌溉控制头，其上可装配其他灌溉控制和指令部件（电气、电子和液压），但不涉及这些附加部件。 本文件不适用于需要防止灌溉控制头中的水结冰的系统和/或组件，例如干桶消防栓或其他类型的消防栓。 本文件没有规定构成灌溉控制头的各个组件的构造或操作要求。 这些要求在每个组件的相关标准中都有规定。 [外文原描述]： This document specifies requirements for the components and method of installation of pressurized irrigation system control heads, referred to hereinafter as irrigation control heads, with a nominal size of up to and including 200 mm (nominal size of an irrigation control head or nominal size of a component). This document is applicable only to the above-ground components of irrigation control heads for sprinkler irrigation and micro-irrigation (mini-sprinklers, drip irrigation, etc.). It is applicable to the basic irrigation control head, on which other irrigation control and command components (electrical, electronic and hydraulic) can be assembled, but does not deal with these additional components. This document is not applicable to systems and/or components that can be required to prevent the water from freezing in the irrigation control head, such as dry-barrel hydrants or other types of hydrants. This document does not specify construction or operating requirements for the individual components that make up the irrigation control head. These requirements are specified in the relevant standards for each component.