A fixed fire tool. Its main role is to control combustibles, isolate combustibles, and eliminate sources of ignition. Indoor fire hydrant use:
a. Open the fire hydrant door and press the internal fire button (the button is the alarm and start the fire pump).
b. One person picks up the gun head and the hose toward the starting point.
c. Another person connects the hose and the valve port.
d, counterclockwise to open the valve water can be sprayed. Note: The electric fire must be determined to cut off the power.