globe valve. With a spherical valve is closed.

Valves can be closed with a round handle.

Globe is used for throttling

If the purpose of the valve is to modulate flow, a globe valve is preferable. If the valve is only on-off, a gate valve is preferable because of lower pressure drop when the valve is open.

As wikipedia , A globe valve is a type of valve used for regulating flow in a pipeline, consisting of a movable disk-type element and a stationary ring seat in a generally spherical body. So i think it is a globe valve to use in steam pipeline.

yes

Never ever use a Gate type of valve for throttling ONLY a globe pattern is designed for this purpose and a needle valve