Easy question for you experts, Is a plug valve a globe valve?Globe valve: A valve where a disc (or for for instance for regulating globe valves a plug) is moved (screwed multiturn, usually) down to close the valve.A plug valve: a valve where a cylindrical or sligtly cone formed plug with a throughgoing cylindrical opening, is moved 90 degrees on the stem axis to open or close the valve (similar to a ball valve).I believe the english language itself is contributing to your question. 'Plug' could in some cases cover the description of the form of the 'disc' usually closing a globe valve.Other languages uses other common group names/partitions between group of valves or description of valve constructions than english. German is often more precise in this matter than english as an example.The question was based on the fact that according to a our isometric dwg the flange to flange distance is 295 mm for a 4" globe valve, however the actual FF distance of the valve 352,5 mm. I attach the drawing of the valve. I understand that the FF distance must be according to ASME B16.10 where there is a difference between globe and plug valve. But after reading your answer it is clear to me that our valve is a globe valve with a plug, but then it does not match ASME.

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