Floating ball what are the characteristics of pneumatic valve adjustment

float adjustment characteristics of pneumatic valve have? The pneumatic valve automatic control in the container level. It installed in container into the liquid or the liquid mouth, use float ( Are usually sold out run of the ball up or down in the container to drive pneumatic disc movement, by regulating the flow of in and out of the container to keep the container must be level.
the float pneumatic valve is to control the import of fluid flow pneumatic valve adjustment. When the liquid level is lower than the specified value, float drop to open the valve flap of pneumatic, liquid into the container, liquid level will increase. When the liquid level up to regulation level, float float to close the valve flap of pneumatic, liquid to stop inflows. This pneumatic valve used in low pressure container level control.