scope:

This European Standard specifies the end-to-end andcentre-to-end dimensions for valves with threaded ends withconnecting dimensions in compliance with EN ISO 228-1 or EN10226-1, used in PN and Class designated piping systems. The rangeof PN is: ? PN 10; PN 16; PN 25; PN 40; PN 63; PN 100; PN 160; PN250; PN 320; PN 400. The range of Class is: ? Class 150, Class 300,Class 600, Class 900, Class 1 500, Class 2 500. The range ofnominal size is: ? DN 4; DN 6; DN 8; DN 10; DN 15; DN 20; DN 25; DN32; DN 40; DN 50; DN 65; DN 80; DN 100. NOTE 1 See Annex C for therelationship between nominal size (DN) and nominal pipe size (NPS).NOTE 2 Valves having screwed end profiles different from thosespecified in EN ISO 228-1 or EN 10226?1, may use the samedimensions than those specified in Table 1.