REBUILT Edwards iQMB1200F iQMB-1200F Blower Roots Vacuum Mechanical Booster Pump (These Edwards iQMB1200F pumps are interchangeable with the QMB 1200F Pumps)
For sale is the Edwards iQMB1200F Mechanical Booster Pump. They are compact and have high pumping speeds.
Low system pressures can be achieved by using two or more mechanical booster pumps in
series. You must use the QMB Mechanical Booster Pump with a suitable backing pump. Preferably the
Edwards QDP pumps. The
maximum continuous inlet pressure is 20 mbar for the QMB250F and QMB500F Mechanical
Booster Pumps and 1 mbar for the QMB1200F Mechanical Booster Pumps.
The QMB250F and QMB500F pumps are air-cooled and the QMB1200F pump is water-cooled.
All the QMB pumps have enclosed, water-cooled motors and are therefore suitable for
applications in clean environments where fan cooling is unacceptable.
The pump coupling-cover is connected to the pump outlet and forms an integral part of the
vacuum system. The connecting pipelines have a filter which removes debris and so prevents
contamination of the lubricating oil and bearings. For an even cleaner system, the
coupling-cover and bearings can be evacuated by connection to the pump-inlet or to an external
vacuum pump.
The QMB pumps are positive displacement Roots vacuum pumps. The pump mechanism is
driven by a three-phase electric motor through a hydrokinetic fluid-coupling. The motor is
enclosed and is cooled by integral cooling-water coils.
The pump shafts and rotors are made of high-grade, corrosion-resistant, cast-iron. The internal
and external shaft-seals are made of polytetrafluoroethylene (PTFE) or fluoroelastomer.
The pump-bearings, gears and seals are lubricated by oil fed from reservoirs in the
coupling-cover.
A series of seals stops the oil from reaching the vacuum side of the pump. The
coupling-cover is evacuated. You can inspect the oil-levels through sight-glasses which are
fitted to the coupling-cover. Oil-filler, oil-drain and external evacuation connections are
provided on the cover.
The QMB250F and QMB500F pumps have rear bearings which are lubricated by
perfluoropolyether (PFPE) grease. The QMB1200F pump gears are lubricated by oil in the
gear-cover. The gear-cover of the QMB1200F has oil-filler and oil-drain plugs and an oil-level
sight-glass. The QMB pumps are suitable for use only with PFPE oils and have voltages of 60 Hz, 208 - 230 VAC / 460 VAC 3 phase.
The price listed above is for a Edwards QMB1200 Blower (Boosters) Vacuum Pump only. We also sell mechanical and blower vacuum pump systems. Please call (505) 872-0037 for more information.
