CJ/T 261-2007 in English

本标准为首次编制的城镇建设行业标准。本标准规定了给水排水用蝶阀的术语和定义，结构型式，产品型号，要求，检验和试验方法，检验规则，标志，包装，运输及贮存。本标准适用于公称尺寸ＤＮ５０～ＤＮ２６００、公称压力ＰＮ２．５～ＰＮ１６，铸铁材质，给水排水用蝶阀。

Scope

This standard specifies the terms and definitions, structural types, product models, requirements, inspection and test methods, inspection rules, markings, packaging, transportation, storage, etc. of butterfly valves for water supply and drainage (hereinafter referred to as butterfly valves). This standard applies to butterfly valves with nominal sizes DN50 to DN2600, nominal pressures PN2.5 to PN16, made of cast iron, and used for water supply and drainage.