DIAVAC LIMITED
Vacuum components

GHP series | KRP series | DMB series


Mechanical pumps


Roots pump: DMB-series

DMB-600
•Features
light-weight and compact design
large evacuation speed with small capacity motor (energy-saving)
clean vacuum available due to no oil used in rotor part
no influence on evacuation characteristics if condensing gas is inlet

•Application to:
vacuum drying that inhales large amount of condensing gas
large capacity tank to be highly evacuated in short time
(space chamber, various rough evacuation, etc.)
various vacuum furnace systems (middle to large sized), etc.

•Product specification
Model DMB-100 DMB-300
Nominal evacuation
speed 50/60Hz m3/h
90/110 250/300
Allowable pressure
difference 50/60Hz kPa
9.3/8 9.3/8
Final pressure Pa 7 X 10-2 7 X 10-2
Evacuation speed of auxiliary pump L/min(m3/h) 300(18) to 600(36) 600(36) to 1650(99)
Rotating speed 50/60Hz min-1 3000/3600 3000/3600
Driving system direct coupling to motor direct coupling to motor
Required power kW 200V X 3ф X 0.4kW 200V X 3ф X 1.5kW
Oil volume L 0.35 1.0
Cooling water volume L/min 1 Air-cooling
Mass kg 25 100
Exterior dimension drawing [PDF]  [DXF] [PDF]  [DXF]

Model DMB-600 DMB-1500
Nominal evacuation
speed 50/60Hz m3/h
500/600 1350/1630
Allowable pressure
difference 50/60Hz kPa
9.3/8 9.3/8
Final pressure Pa 7 X 10-2 7 X 10-2
Evacuation speed of auxiliary pump L/min(m3/h) 1500(90) to 3650(220) 3650(220) to 7500(450)
Rotating speed 50/60Hz min-1 1500/1800 1500/1800
Driving system direct coupling to motor direct coupling to motor
Required power kW 200V X 3ф X 2.2kW 200V X 3ф X 5.5kW
Oil volume L 2.8 4.2
Cooling water volume L/min 7 7
Mass kg 250 510
Exterior dimension drawing [PDF]  [DXF] [PDF]  [DXF]

Model DMB-2500 DMB-6000
Nominal evacuation speed 50/60Hz m3/h 2070/2500 6000
Allowable pressure difference 50/60Hz kPa 6.7/5.3 4.7
Final pressure Pa 7 X 10-2 7 X 10-2
Evacuation speed of auxiliary pump L/min(m3/h) 7500(450) to 10000(600) 10000(600) to 15000(900)
Rotating speed 50/60Hz min-1 1500/1800 1200
Driving system direct coupling to motor driven by V-belt
Required power kW 200V X 3ф X 5.5kW 200V X 3ф X 11kW
Oil volume L 5.6 2.5
Cooling water volume L/min 7 18
Mass kg 670 1060
Exterior dimension drawing [PDF]  [DXF] [PDF]  [DXF]
*As for vacuum switch, setting pressure is 2.7kPa as standard. (option)
Unified production together with KRP-series is also available.
*As for exterior shape, specification shall be subject to change without prior notice for improvement.





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