DIN EN 331:2016-04

This European Standard has been prepared by Technical Committee CEN/TC 236 "Non-industrial manually operated shut-off valves and particular combinations valves-other products" in collaboration with standards committee NA 032-02-06 AA "Gasarmaturen" ("Gas valves") at DIN, the German Institute for Standardization e. V. This European Standard specifies the characteristics for the construction, performance and safety of ball valves and closed bottom taper plug valves. It also details the test methods and marking provisions. It applies to metallic valves not directly buried for domestic and commercial installations inside or outside of buildings with pressures up to 5 bar, using gases of the first, second and third family (specified in EN 437). This standard deals with requirements and tests for ball valves and closed bottom taper plug valves of nominal sizes up to DN 100.