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),
