Is BMW warm water valve normally open or normally closed?

Normally closed valve. The function of BMW heater water valve is to control the water flow in the heating system and adjust the heating temperature in the car. In BMW models, the heating water valve is located at the water outlet of the heating system. When the electric control valve is closed, the heating water valve is closed, and the heating water will not flow into the heating chip, thus stopping heating and achieving the purpose of adjusting the temperature. So BMW warm water valve is a normally open valve. BMW has developed from the initial aircraft engine factory into a world-famous enterprise group that mainly produces luxury cars, aircraft engines, off-road vehicles and motorcycles, and ranks among the top automobile enterprises in the world.