1, the water inlet valve is marked in the red box, which is flush with the water pipe and belongs to the open state.
2. The blue box shows the backwater valve, which is vertical to the water pipe and closed.
Extended data
Turn the handwheel clockwise when opening the valve, and counterclockwise when closing it, and rotate it in place according to the opening and closing instructions. Do not replace the radiator or drain water from the system at will. Without hot water, the water temperature in the pipe network will drop rapidly, resulting in a drop in indoor temperature.
When the radiator leaks, the user who controls the household should close the two valves (indoor master valve) at the entrance of the indoor pipeline in time, and the radiator control valve should be closed quickly if there is a control valve in the old system. When the heater has no control valve, if the situation is particularly urgent and uncontrollable, you can quickly close the main valve in front of the building with the help of others, and call the service number of the external network maintenance personnel in time.
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