本文件规定了埋地和地上聚乙烯（PE）阀门或阀体的特性，用于输送人类用水、处理前原水、压力排水和排污、真空排水系统和其他用途的水。 它适用于隔离单向阀和双向阀，带有插口端或电熔插座，拟分别与符合prEN 12201 2和prEN 12201 3的PE管或配件熔合。 根据EN 12201，由PE以外的材料制成的阀门，设计用于在符合相关标准的压力下供水、排水和排污，可用于PE管道系统，前提是它们具有用于对接熔合或电熔合端的PE连接，包括集成材料过渡接头，符合prEN 12201 3。 注1:对于拟用于压力排水和排污的阀门或阀体，根据买方的要求，可能需要额外的规范/试验，尤其是与流体接触的部件的耐化学性和功能特性。 注2:对于处理前用于输送人类饮用水和原水的PE部件，请注意5.4。为其他目的用水而制造的部件可能不适合人类饮用水。 它还规定了本文件中提及的试验方法的试验参数。 注3:由聚乙烯（PE）以外的材料制成的阀门，用于按照相关标准供应人类用水，当其具有用于对接熔合或电熔合端的相关PE连接时，可在符合EN 12201的PE管道系统中使用（见prEN 12201 3: 2021). 结合EN 12201第1、2、3和5部分，适用于PE阀门及其接头，以及在以下条件下使用的PE部件和其他材料的接头: a） 允许工作压力，PFA，高达25巴）； b） 20°C的工作温度作为参考温度； c） 埋在地下； d） 出海口； e） 置于水中； f） 地面以上，包括悬挂在桥梁下方的管道。 注4:对于在大于20°C且不超过40°C的恒温条件下运行的应用，见prEN 12201 1:2021，附录A。 EN 12201涵盖了一系列允许的工作压力，并给出了有关颜色和添加剂的要求。 注5:考虑到买方或规范的特殊要求、任何相关国家指南或法规以及安装实践或规范，买方或规范有责任从这些方面做出适当选择。 EN 12201的本部分涵盖公称外径dn管道的阀门≤ 400毫米。

This document specifies the characteristics of valves or valve bodies made from polyethylene (PE) for buried and above ground applications, intended for the conveyance of water for human consumption, raw water prior to treatment, drainage and sewerage under pressure, vacuum sewer systems, and water for other purposes. It is applicable to isolating unidirectional and bi-directional valves with spigot ends or electrofusion sockets intended to be fused with PE pipes or fittings conforming to prEN 12201 2 and prEN 12201 3 respectively. Valves made from materials other than PE, designed for the supply of water, drainage and sewerage under pressure conforming to the relevant standards can be used in PE piping systems according to EN 12201, provided that they have PE connections for butt fusion or electrofusion ends, including integrated material transition joints, conforming to prEN 12201 3. NOTE 1 For valves or valve bodies intended for drainage and sewerage under pressure, additional specifications/tests could be necessary according to the requirements of the purchaser, especially for the chemical resistance of the components in contact with the fluids and functioning characteristics. NOTE 2 For PE components intended for the conveyance of water for human consumption and raw water prior to treatment attention is drawn to 5.4. Components manufactured for water for other purposes are possibly not suitable for water supply for human consumption. It also specifies the test parameters for the test methods referred to in this document. NOTE 3 Valves made from material other than polyethylene (PE) designed for the supply of water intended for human consumption to a relevant standard(s) can be used in PE piping systems conforming to EN 12201 when they have relevant PE connection for butt fusion or electrofusion ends (see prEN 12201 3:2021). In conjunction with Parts 1, 2, 3 and 5 of EN 12201 it is applicable to PE valves, their joints and to joints with components of PE and other materials intended to be used under the following conditions: a) allowable operating pressure, PFA, up to 25 bar ); b) an operating temperature of 20 °C as a reference temperature; c) buried in the ground; d) sea outfalls; e) laid in water; f) above ground, including pipes suspended below bridges. NOTE 4 For applications operating at constant temperature greater than 20 °C and up to 40 °C, see prEN 12201 1:2021, Annex A. EN 12201 covers a range of allowable operating pressures and gives requirements concerning colours and additives. NOTE 5 It is the responsibility of the purchaser or specifier to make the appropriate selections from these aspects, taking into account their particular requirements and any relevant national guidance or regulations and installation practices or codes. This Part of EN 12201 covers valves for pipes with a nominal outside diameter dn ≤ 400 mm.