CEN/TC 69/WG 2 - Gate valves

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.

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
-   PN 10; PN 16; PN 25; PN 40; PN 63; PN 100
-   Class 150; Class 300; Class 600
b)   for butt welding end valves
-   PN 10, PN 16, PN 25, PN 40, PN 63, PN 100
-   Class 150, Class 300, Class 600
c)   for socket welding end valves and threaded end valves
-   PN 10; PN 16; PN 25; PN 40; PN 63; PN 100
-   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.

ISO 10434:2004 specifies the requirements for a heavy-duty series of bolted bonnet steel gate valves for petroleum refinery and related applications where corrosion, erosion and other service conditions would indicate a need for full port openings, heavy wall sections and large stem diameters. It sets forth the requirements for the following gate valve features: bolted bonnet; outside screw and yoke; rising stems; nonrising handwheels; single or double gate; wedge or parallel seating; metallic seating surfaces; flanged or butt-welding ends. It covers valves of the nominal sizes DN 25, 32, 40, 50, 65, 80, 100, 150, 200, 250, 300, 350, 400, 450, 500 and 600, corresponding to nominal pipe sizes NPS 1, 1 1/4, 1 1/2, 2, 2 1/2, 3, 4, 6, 8, 10, 12, 14, 16, 18, 20 and 24. It is applicable to pressure Class designations 150, 300, 600, 900, 1500 and 2500.

This standard specifies general requirements for cast iron gate valves: - for all fluids and all places of installations;-with flanged,socket orspigot ends; Isobaric from Pn6 to PN 25;Isomorphic from PN1 to PN10. The range of nominal sizes covered is: DN40;DN50;DN65;DN80;DN100;DN125;DN150;DN 200;DN250;DN300;DN350;DN400;DN450;DN500;DN600;DN700;DN750;DN800;DN900; DN1000. For particular applications, some specific or alternative requirements and/or a amendments can be specified by the releva nt performance standards.

This European Standard applies to copper alloy gate valves for general use having : flanged, threaded, capillary, compression or loose nut/union end body ends; designations PN 6, PN 10, PN 16, PN 20, PN 25, PN 32, PN 40, PN 63, Class 150 and Class 300; nominal sizes DN 8 to DN 500.
This standard specifies the design and performance requirements including materials, pressure/temperature ratings for the shell and body seats, dimensions, test procedures and marking. For some specific fields of application, for example, drinking water or gas, the
requirements given in this standard may be supplemented or modified by the requirements defined in the related application standard and approval by the relevant regulatory body may be required.

This standard specifies the requirements for steel gate valves which are wrought, cast or fabricated with: - outside screw and yoke or inside screw; - single or double obturator; - wedge or parallel seating; - full bore or reduced bore; - end connections flanged, butt welding, socket welding or threaded.