AIR DELIVERY · SUCTION
GB single- and double-stage ring blowers
GB is a ring-blower range for air delivery and suction, with single-stage and double-stage configurations. The catalogue supplies separate airflow, pressure and vacuum data for each arrangement, making the intended air duty the basis for choosing a unit.
Range technical data
- Single stage: power
- 0.25–18 kW
- Single stage: maximum airflow
- 1050 m³/h
- Single stage: pressure / vacuum maxima
- 79 / 40 kPa
- Double stage: power
- 0.55–15 kW
- Double stage: maximum airflow
- 560 m³/h
- Double stage: pressure / vacuum maxima
- 72 / 57 kPa
- Electrical supply
- 1~ 220–240 V up to 2.2 kW; 3~ 380–415 V from 0.55 kW, according to model; 50 Hz
The airflow, pressure and vacuum maxima are separate range limits. Choose the stage arrangement and duty from the appropriate pressure or vacuum curve at the required airflow.
Series catalogue ↗GB
A closer look at the series
The GB catalogue explains a vortex or ring-blower principle in which impellers are mounted directly on the motor shaft and the bearings sit outside the compression chamber. It separates single-stage and double-stage equipment, each with its own pressure, vacuum and flow envelopes. Listed blowing uses include wastewater and aquaculture aeration, air-knife drying and pneumatic conveying; suction examples include hold-down and dust-extraction duties.
GB moves air, not water, and its performance must be read from the air curves for the correct stage configuration. Compare required airflow and pressure or vacuum at the actual operating point, then check electrical supply and the installation conditions of the selected blower.
Features
- Single- and double-stage configurations
- Separate pressure and vacuum curves
- Direct-mounted impellers
- Bearings outside compression chamber
Applications
- Wastewater and aquaculture aeration
- Air-knife drying
- Vacuum hold-down and dust extraction
Materials
The GB brochure identifies the main components in an exploded view but does not specify their material grades. Check the series catalogue for the selected configuration.
Operating conditions
The range contains single-stage and double-stage blowers for blowing or suction duties at 50 Hz. Electrical phase availability varies with power. A gas-temperature or ambient-temperature limit is not specified in the overview. Check the series catalogue for the selected configuration.
Construction and application
Before selecting
- Define blowing or suction duty and compare airflow at the required pressure or vacuum.
- Select the single-stage or double-stage curve for the exact model.
- Confirm electrical phase and the required installation conditions.
Your questions
Series questions
Can GB be selected for both air delivery and suction?
The brochure lists separate blowing and suction applications. Select using the pressure or vacuum curve for the actual duty.
Does /2 identify a second blower stage?
Yes. The GB model code identifies /2 as double stage, and S as three-phase; without S it identifies single-phase.
Original catalogue
GB / PDF
Page 1 separates single/double stages, supply options and model suffixes; page 2 explains construction. Select the pressure or vacuum curve for the exact stage and required airflow.