NBN EN 12288:2010

This European Standard applies to copper alloy gate valves for general use having flanged, threaded, capillary, compression or loose nut/union body ends.
This European Standard specifies the design and performance requirements including materials, pressure/temperature ratings, dimensions, test procedures and marking.
For some specific fields of application, for example, drinking water or gas, valves to this European Standard can be used provided the requirements of the relevant performance standards are met. Approval by the relevant regulatory body may be required.
The range of nominal sizes is DN 8 to DN 500 and of nominal diameters is 8 mm to 110 mm.
The range of pressure designations covered is PN 6 ; PN 10 ; PN 16 ; PN 20 ; PN 25 ; PN 32 ; PN 40 ; PN 63 ; Class 150 and Class 300.
For the applicability of each nominal size/diameter and each pressure designation to the different types of valve end, see 4.1.