本手册介绍了弹性体在自来水厂管道、阀门和配件中的历史和一般应用。它提供了关于普遍可用的弹性体和产品及其应用的指南。有关特定情况或特定阀门或配件适用性的问题，请咨询制造商或供应商。本手册中包含的信息有助于操作员、技术人员和工程师基本了解弹性体的使用和选择。

This manual presents the history and general application of elastomers in waterworks pipes, valves, and fittings. It provides guidance on generally available elastomers and products and their application. Questions about specific situations or applicability to specific valves or fittings should be directed to the manufacturer or supplier. Information contained in this manual is useful for operators, technicians, and engineers for gaining a basic understanding of the use and selection of elastomers.