本文件规定了水驱动化学喷射泵（以下简称水驱动喷射泵）的结构、操作要求和试验方法。这些水驱动的喷射泵用于向灌溉系统喷射化学物质。这些化学品包括液体肥料、肥料溶液和其他可溶性农业化学品，如酸和农药。 本文件适用于在水温高达50°C，且在灌溉中常规使用的化学品类型和浓度下运行的水驱动喷射泵。 它不包括防回流装置的功能，也不适用于将化学品注入基于文丘里原理运行的灌溉系统的水驱动装置。

This document specifies the construction, operational requirements and test methods for water-driven chemical injector pumps (hereinafter, water-driven injector pumps). These water-driven injector pumps are used to inject chemicals into irrigation systems. The chemicals include liquid fertilizers and solutions of fertilizers and other soluble agricultural chemicals such as acids and pesticides. This document is applicable to water-driven injector pumps intended to operate at water temperatures of up to 50？°C and with the types and concentrations of chemicals routinely applied in irrigation. It does not cover the function of backflow prevention devices, nor is it applicable to water-driven devices for injecting chemicals into an irrigation system operating on the basis of the Venturi principle.