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Steel Globe Valves—Flanged and Butt-welding Ends, Bolted Bonnets
Includes ERRATA 1, APRIL 2024
This API standard specifies the requirements for a heavy-duty series of bolted bonnet steel globe valves for petroleum refinery and related applications where corrosion, erosion, and other service conditions would indicate a need for heavy wall sections and large stem diameters.
This standard sets forth the requirements for the following globe valve features:
- bolted bonnet;
- pressure seal bonnet;
- outside screw and yoke;
- rotating rising stems and nonrotating rising stems;
- rising handwheels and nonrising handwheels;
- straight pattern, y-pattern, right-angle;
- stop-check (nonreturn type globe valves in which the disc may be positioned against the seat by action of the stem but is free to rise as a check valve due to flow from under the disc when the stem is in a full or partially open position);
- plug, narrow, conical, ball, or guided disc;
- metallic seating surfaces;
- flanged or butt-welding ends.
It covers valves of the nominal pipe sizes NPS:
- 2, 2½, 3, 4, 6, 8, 10, 12, 14, 16, 18, 20, 24;
corresponding to nominal pipe sizes DN:
- 50, 65, 80, 100, 150, 200, 250, 300, 350, 400, 450, 500, 600;
applies for pressure class designations:
- 150, 300, 600, 900, 1500, 2500.
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