A globe valve is a device whose primary function is to open and close members (valves) that are driven by stems. These valves lift along a surface called the valve seat in order to achieve linear movement.
The typical globe valve operates by using various components that work together (i.e. handwheel, stem, valve body and cover, closure, and packing assembly). The handwheel connects to the valve stem, which in turn drives the valve flap. This reciprocal motion along the direction of the valve seat axis opens or closes the pipeline when it needs to.
Globe valves are widely used and are generally produced in smaller diameters up to DN400 (NPS 16). Larger diameter specifications are only for special pipelines. For example, a large oxygen pipeline may require a large-diameter stainless steel globe valve This is due to the existence of other valves that may cause friction and lead to static fires.