API Std 623

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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.

Product Details

Edition:
2nd
Published:
01/01/2021
Number of Pages:
39
File Size:
1 file , 1.4 MB
Redline File Size:
2 files , 7.3 MB
Product Code(s):
C62302, C62302, C62302, C62302
Note:
This product is unavailable in Cuba, Iran, North Korea, Syria