Rotary Valves/ Air Locks perform a vital performs a vital function in the feed milling and food processing industries. These Air Locks discharge powdered materials from the cyclones of pneumatic systems without allowing air to leak past the openings. These Air Locks ensure precise tolerance between rotor, housing and covers that prevent air leakage while allowing free material movement. Rotary Valves/ Air Locks come with dust seals to protect bearings from impurities.