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Rotary Lubricated Rotary Oilless ROC-R Diaphragm Piston Blower Flow High High Low Low Low Very High Vacuum/Level Capability High High High High High Very Low Noise Average Average Low Low High Average Corrosion Resistance Average Low High High High High Exhaust Pulsations Low Low High High High None Preventive Maintenance Required Average Very Low Very Low Very Low Very Low None Contamination Of Air Oil Very Small Amount Of Carbon Dust None None None None     TOLERANCES     Radial Side Channel Rotary Vane Rotary Lobe Claw Roots Screw m3/h 10% 10% 5% 10% 5% 5% 10% K - - - - - 10% - mbar (abs) - - - - mbar 10% 10% - 10% - 10% - bar - - 5% - 5% - - dB(A) 2 2 2 2 2 2 2 kg 10% 10% 10% 10% 10% 10% 10%

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