You need to fix the leak.
Search the pile of junk behind you to find an UMBRELLA. Use the umbrella on yourself to protect against the leak and walk to the left. Turn the lower valve to stop the steam coming from the boiler and detect a roll of duct tape. Pick up the TAPE and turn the upper valve to stop the water from spraying.
As soon as the water has stopped, use the tape on the leak in the pipe and once the pipe is fixed, turn the upper valve to let the water flow again. But if it helps….
Game source: A copy of the game was found here on the internet.