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Rotor Pump is also named roots pump, colloidal pump,high concentration pump,etc,It depends on two synchronic rotators.The two rotators are driven by a pair of outer-set synchronic gear boxes and the transmission shaft .They move synchronically in counter-clockwise directions.Which consequently,builds up high vacuum capacity and emission pressure. Table Parameter ModelL/RRPMFlowL/HPressure MpaViscosityCPPowerKWCalibermmRP25-50.03200 500320-8500.2-1.21-10000000.5525RP25-80.05200 500550-14000.2-1.21-10000000.7525RP25-120.065200 500720-18500.2-1.21-10000001.125RP32-150.08200 500920-22000.2-1.21-10000001.532RP38-220.12200 5001400-32000.2-1.21-10000002.238RP38-300.18200 4002100-42000.2-1.21-1000000338RP45-450.29200 4003100-64000.2-1.21-1000000445RP50-580.35200 4003800-80000.2-1.21-1000000450RP50-700.42200 4004700-95000.2-1.21-10000005.550RP65.5-850.52200 4005800-115000.2-1.21-10000007.563.5RP63.5-1100.72200 4008000-150000.2-1.21-10000007.563.5RP76-1601.0200 40011000-230000.2-1.21-10000001176RP89-2301.3200 40016000-320000.2-1.21-10000001189RP89-2601.6200 40018000-370000.2-1.21-10000001589RP108-3202.0200 40021000-450000.2-1.21-100000018.5108Note: 1. The motor power should be increased when delivering high viscosity liquid,and adopts stepless speed regulator or frequency transformer to adjust the speed;2. The flow in tile table fefers to the aata tested taking water as the medium;3. You can choose Hoop / thread and flange.