Technology 1999
Since 1999 there are even more automatic Material-Distribution-Systems. A so-called Double-Rotary-Valve ensures that the correct material reaches the correct destination. After every conveying-cycle the source and receiver are rotated to the correct positions through motors. Multiple suppliers offer these automatic system in various styles.
Advantages
No check-valves are needed
Disadvantages
In the case of a motor-breakdown the whole production-side will stop
Requires a lot of space
Pipe-installation needs time and effort
Large investment