This European Standard specifies the requirements for steel gate valves which are wrought, cast or fabricated with end connections flanged, butt welding, socket welding or threaded.This European Standard is applicable to steel 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 ranges of nominal sizes covered is: DN 8; DN 10; DN 12; DN 15; DN 20; DN 25; DN 32; 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 750; DN 800; DN 900; DN 1000. DN 750 is used for Class designated valves only. DN 8 and DN 12 are not used for flanged end connections. Socket welding end valves and threaded end valves are limited to the range DN 8 to DN 65. The range of pressure designations covered is: a) for flanged valves 1) PN 10; PN 16; PN 25; PN 40; PN 63; PN 1002) Class 150; Class 300; Class 600 b) for butt welding end valves 1) PN 10, PN 16, PN 25, PN 40, PN 63, PN 1002) Class 150, Class 300, Class 600 c) for socket welding end valves and threaded end valves 1) PN 10; PN 16; PN 25; PN 40; PN 63; PN 1002) Class 600; Class 800 NOTE 1 Socket welding end and threaded end valves are not normally manufactured with the pressure designations PN 10, PN 16, PN 25 and PN 40. NOTE 2 Class 800 is an intermediate class designation widely used for socket welding and threaded end valves.
EN 10045-1:1989 Metallic materials; Charpy impact test; part 1: test method
EN 1092-1:2007 Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, PN designated - Part 1: Steel flanges (Incorporates Amendment A1: 2013; Incorporating Corrigendum May 2014)
EN 12266-1:2003 Industrial valves Testing of valves Part 1: Pressure tests, test procedures and acceptance criteria Mandatory requirements
EN 12266-2:2002 Industrial Valves - Testing of Valves Part 2: Tests, Test Procedures and Acceptance Criteria Supplementary Requirements*， 2024-04-19 Update
EN 1418:1997 Welding Personnel - Approval Testing of Welding Operators for Fusion Welding and Resistance Weld Setters for Fully Mechanized and Automatic Welding of Metallic Materials
EN 1759-1:2004 Flanges and their joints - Circular flanges for pipes, valves, fittings and accessories, class designated - Part 1: Steel flanges, NPS 1/2 to 24*， 2024-04-19 Update
EN 19:2002 Industrial Valves - Marking of Metallic Valves
EN 287-1:2004 Qualification test of welders - Fusion welding - Part 1: Steels Incorporating Corrigendum August 2004; Includes Amendment A2:2006
EN 558:2008 Industrial valves - Face-to-face and centre-to-face dimensions of metal valves for use in flanged pipe systems - PN and Class designated valves (Incorporating corrigendum September 2010)
EN 736-1:1995 Valves - Terminology - Part 1: Definition of types of valves
EN 736-2:1997 Valves - Terminology - Part 2: Definition of Components of Valves
EN 736-3:2008 Valves - Terminology - Part 3: Definition of terms