HOFFMAN DEFENDER™ Lobe positive displacement blower packages for municipal wastewater treatment have flexible configurations and enhanced technical features. Our integrated package is designed to convey gas at low pressure. It is based on a positive displacement rotary lobe blower, operated by an electric motor through a belt drive, including all accessories.
Globally, the HOFFMAN DEFENDER Lobe packages mean reliability, extreme sturdiness, and compactness. In a competitive global market, our long history of supplying blower solutions to suit our customers' unique requirements sets us apart from the rest.
Our Rotary Lobe blower has a capacity of up to 6,121 cfm to meet the various needs of our customers and their range of municipal wastewater applications. This is an excellent solution for the oil-free conveyance of air and neutral gases. It is equipped with a low-pulse system that reduces the residual pressure pulsation of the conveyed gas.
Our HOFFMAN DEFENDER™ Rotary Lobe blowers are innovatively designed to operate as follows:
Efficient - Thanks to patented rotors, which reduce the number of revolutions and enhance the capacity-pressure ratio
Quiet Operation - As a result of high-efficiency internal compression, silencers, and a noise-reducing enclosure
Simple - Installation and configuration
Flexible - To ensure operation at the point of the best efficiency
Ease of Maintenance - Thanks to its simple and robust construction
Top System Components
Smart Oil System
One oil level (all models, only frame 1 excluded) to check from outside
Better reading reliability
Easier oil filling operation
Lower oil top-up times with lower maintenance costs
New Performance Cooling Fan
Better air circulation inside the noise enclosure
Extended operating range capacity
Easy connection through a terminal board
Better efficiency due to inner enclosure's lower temperature
Our DEFENDER Lobe PD blower allows maintenance operations to be carried out in an even easier and effortless manner:
Simplified Access - All maintenance operations are performed from the front with the removal of the front panel or panels and/or the opening of the upper panel with gas springs
Effortless Adjustment & Replacement of Soundproof Filter SPF - By simply opening the noise enclosure's upper panel (or removal of the front panel)
Instant Oil Level Check - The oil level can be checked externally with the blower running, utilizing a level positioned on the front panel of the enclosure
Easy Oil Change - An oil change can be performed directly from the front panel with easily accessible fill and drain hoses
Automatic Belt Tensioning - An oscillating suspension system of the motor maintains the correct belt tension at all times, thereby reducing the load on the bearings
Simple Belt Replacement - This is carried out from the front without the use of any additional equipment because of the automatic tensioning device
With flexible configurations and enhanced technical features, the DEFENDER Lobe PD blower package is the perfect solution for a broad range of environmental applications like municipal wastewater treatment.