本文件规定了安装在加油站计量泵和分配器上的输送软管组件上的转环的结构和性能的安全要求，该转环用于将液体燃料和尿素水溶液分配到机动车辆、船只和轻型飞机的油箱中，并以高达200 l·min–1的流速分配到便携式容器中。它特别关注转体的电气、机械和液压特性。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This document specifies safety requirements for the construction and performance of swivels to be fitted to delivery hose assemblies on metering pumps and dispensers installed at filling stations and used to dispense liquid fuels and aqueous urea solution into the tanks of motor vehicles, boats and light aircraft and into portable containers at flow rates up to 200 l · min–1. It pays particular attention to electrical, mechanical and hydraulic characteristics of swivels.All current amendments available at time of purchase are included with the purchase of this document.