Try them all at once, see what happens 🐶🐾🍿🍿🍿🥤👀🤣

the ones with all the insulation control the hotness.....

Steamboat?

If so looks like front and center is a gauge glass for water level. Top valve to fill, bottom to drain, both normally open during operation.

Top center between the gauges is likely the main steam stop. Hard to tell which is the throttle but it could also be that one. If it is it’s in a very weird spot.

Valve to the right of the gauge glass looks like it could be on the top of what may be a feed water heater but hard to say with the incomplete picture.

The two gauges on top are for boiler pressure and maybe condenser vacuum on the back side but hard to tell for sure.

Valve with the four prong black handle is probably the main throttle.

Can’t tell what the brass thing is tbh but maybe something for oiling? I would need to see a full image to figure it out.

All of this assumes you’re on a small scale steam boat. If you aren’t then ignore everything I just said 😂

🤓