Rotary lobe blower

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Overview - Positive displacement blowers

High-Pressure Blowers series GM...dz
Positive Displacement Blowers

The positive displacement blower series GM...dz is suitable for conveying of air and neutral gases.

Type of construction Positive Displacement Blowers
Volume flow 60 up to 6.000 m³/h
Size 5
Medium air, neutral gases
Conveying oil-free
Pressure operation Operating pressure range up to max. 25 bar, where the medium has the corresponding inlet pressure. Max. differential pressure 2000 mbar.
Suction operation  

(product picture: GM 11.2 dz High-pressure blower unit with compressed-oil lubrication)

Design
Housing with circular flanges and o-ring seals, lube- and purge oil supply by complete oil unit, oil chambers under gas pressure.

Shaft sealings
Conveying chamber by combined oil slinger piston ring labyrinth seals with condensate chamber between the piston rings or shaft seal ring - piston ring labyrinth seal.

The drive shaft is sealdes via compressed-oil-purged double-acting mechanical seal.

Direction of flow
Vertical, from top to bottom.

Drive
Direct coupling with motor or via flexibly coupled spur gear.

Booster-design typ GM...d