1. locate the steam valve: find the location of the steam valve in the 2177 game.

2. approach the valve: approach the valve and make sure to stand beside it.

3. Interaction with the valve: According to the operation mode of the game, use appropriate keys to interact with the valve.

4. close the valve: press the corresponding button to close the steam valve.

5. Confirm closing: confirm whether the valve is completely closed and stop the flow of steam.