This European Standard specifies the requirements for cast iron gate valves with flanged ends, socket ends or spigot ends. This European Standard is applicable to cast iron gate valves mainly used for industrial and general-purpose applications. However, they can be used for other applications provided the requirements of the relevant performance standards are met. The range of nominal sizes covered is: DN 40; DN 50; DN 65; DN 80; DN 100; DN 125; DN 150; DN 200; DN 250; DN 300; DN 350; DN 400; DN 450; DN 500; DN 600; DN 700; DN 800; DN 900; DN 1000. The range of pressure designations covered is:- isobaric PN 6; PN 10; PN 16; PN 25; - isomorphic, PS 10 bar to PS 1 bar at room temperature.
EN 1171:2015 Referenced Document
EN 1092-2:1997 Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 2: Cast iron flanges
EN 12266-1:2012 Industrial valves - Testing of metallic valves - Part 1: Pressure tests, test procedures and acceptance criteria - Mandatory requirements
EN 12266-2:2012 Industrial valves - Testing of metallic valves - Part 2: Tests, test procedures and acceptance criteria - Supplementary requirements
EN 12351:2010 Industrial valves - Protective caps for valves with flanged connections
EN 12516-3 Valves - Shell design strength - Part 3: Experimental method*， 2024-04-20 Update
EN 1561:2011 Founding - Grey cast irons*， 2024-04-20 Update