Page 425 - APPLIED PROCESS DESIGN FOR CHEMICAL AND PETROCHEMICAL PLANTS, Volume 1, 3rd Edition
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Ejectors and Mechanical Vacuum Systems 391
Agure 6-44. Rotary blower with screw-type rotors. By permission, Gardner-Denver Industrial Machinery-Cooper Industries.
Figure 6-45. Cut-away view of internal assembly of rotary lobe vacuum pump. By permission, Tuthill Corp., M.D. Pneumatics Division.
