EN 331:1998

EN 331:1998 is a standard published by the European Committee for Standardization (CEN). Its full title is "Manually operated ball valves and closed bottom taper plug valves for gas installations for buildings". This standard covers: 1.1 This European standard specifies the general requirements for the construction, performance and safety of ball valves and closed bottom taper plug valves. It also details the test methods and marking requirements. It applies to valves for domestic and commercial not directly buried installations inside or outside of buildings, using gases of the first, second and third family (specified in EN 437).

1.1 This European standard specifies the general requirements for the construction, performance and safety of ball valves and closed bottom taper plug valves. It also details the test methods and marking requirements. It applies to valves for domestic and commercial not directly buried installations inside or outside of buildings, using gases of the first, second and third family (specified in EN 437).

EN 331:1998 is classified under the following ICS (International Classification for Standards) categories: 23.060.10 - Globe valves. The ICS classification helps identify the subject area and facilitates finding related standards.

EN 331:1998 has the following relationships with other standards: It is inter standard links to EN 331:2015, ISO 65:1981, ISO 261:1973, EN 60730-1:2000, EN 1503-4:2016, EN 1503-3:2000, EN 10226-1:2004, EN ISO 9227:2006, EN 437:2021, EN 10226-3:2005, EN ISO 6708:1995, EN 10226-2:2005, EN 12627:2017, EN 1775:2007, EN 1555-3:2025. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

EN 331:1998 is associated with the following European legislation: EU Directives/Regulations: 305/2011, 89/106/EEC; Standardization Mandates: M/131. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.

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