Yes
The heater water valve is the heater switch of the car heater. The working principle of the car heater's warm air is that the radiator in the heater is connected to the engine circulating water through the inlet/outlet pipeline. The water valve is a switch: when the water valve is opened, the water path is connected, and the engine circulating water enters the radiator, and the fan Blow heat into the cab; otherwise, the water valve is closed and the warm air does not work.