本欧洲标准规定了钢球和截止阀和止回阀的要求，这些止回阀和止回阀以直角，倾斜或倾斜的形式进行锻造，铸造或制造，端接连接法兰，对接焊，插座焊接或螺纹。 本标准适用于主要用于工业和通用应用的钢球和截止阀和止回阀。但是，如果满足相关性能标准的要求，它们可以用于其他应用。 涵盖的标称尺寸范围是: 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 8和DN 12不用于PN指定的法兰端连接。 DN 8，DN 10和DN 12不用于Class指定法兰端连接。 套管焊接端阀和螺纹端阀限制在DN 8到DN 65的范围内。 所涵盖的压力范围包括: a）用于法兰和对接焊接端阀: - PN 10; PN 16; PN 25; PN 40; PN 63; PN 100; - 150级300级; 600级。 b）插座焊接端阀和螺纹端阀: - PN 40; PN 63; PN 100; - 600级; 800级。 注意800类是广泛用于插座焊接和螺纹端阀的类别标识

This European Standard specifies the requirements for steel globe and globe stop and check valves which are wrought, cast or fabricated in straight, angle or oblique pattern with end connections flanged, butt welding, socket welding or threaded. This standard is applicable to steel globe and globe stop and check 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 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 8 and DN 12 are not used for PN designated flanged end connections. DN 8, DN 10 and DN 12 are not used for Class designated 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 and butt welding end valves: - PN 10; PN 16; PN 25; PN 40; PN 63; PN 100; - Class 150; Class 300; Class 600. b) for socket welding end valves and threaded end valves: - PN 40; PN 63; PN 100; - Class 600; Class 800. NOTE Class 800 is a Class designation widely used for socket welding and threaded end valves.