
The AERZEN Series GMD is a universal, oil-free rotary lobe gas booster designed specifically for low-pressure process gas applications. Engineered for maximum gas-tightness, it features a hermetically sealed magnetic coupling that eliminates the need for shaft seals, ensuring a virtually maintenance-free operation.
The GMD series, made by AERZEN, is the universal gastight booster solution for the low-pressure range. Equipped with a magnetic coupling, it ensures a maintenance-free sealing concept. Locking systems for sealing the drive shaft are completely eliminated, allowing a low-maintenance machine concept. The separation between the oil and process sides is achieved by a special piston ring seal.

AERZEN offers the process gas and refrigeration industry an enormously wide range of blower technologies – perhaps the widest ever. The machines operate in a stand-alone manner, as part of a machine-or-container combination, onshore and offshore. You find them in all key industrial applications.


The GMD series from AERZEN is the universal gastight booster solution for the low-pressure range. Equipped with a magnetic coupling, it guarantees a virtually maintenance-free sealing concept. Locking systems for sealing the drive shaft are completely eliminated, allowing a low-maintenance machine concept. The separation between the oil and process sides is achieved by a special piston ring seal. The robust two-lobe design allows a design pressure of 7.0 barg according to AD2000/DIN EN 13445. 16 sizes guarantee optimum efficiency and operation conditions for every design case.
Shaft sealing by a hermetically sealed magnetic coupling. Alternatively, an oil-purged double-acting mechanical seal with thermosiphon cooling for torques ≥ 600 Nm.
Vertically downwards.
Direct coupling with motor (type of construction B35 for magnetic coupling or B3 for alternative shaft sealing via mechanical seal).
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