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API Std 623

M00022846

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API Std 623 Steel Globe Valves-Flanged and Butt-welding Ends, Bolted Bonnets, First Edition

standard by American Petroleum Institute, 09/01/2013

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Full Description

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,outside screw and yoke,rotating rising stems, and nonrotating rising stems,rising handwheels and nonrising handwheels,conventional, 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, 21/2, 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.