Developed to protect food, pharmaceutical, and other ingredients from metal particulate contamination, the RotaSafe RS1 monitors rotary valve operation 24/7, automatically detects contact between the rotor and housing, and, in the event of detection, immediately shuts down power to the drive motor to stop the process. The rotary airlock safety system is triggered before the powders or other bulk materials can become contaminated by foreign matter and before the valve incurs any damage from metal to metal contact.