Lobe PD Blower Packages

Rotary Lobe Blowers - A Superior Package

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
• Greater reliability
• Easy connection through a terminal board
• Better efficiency due to inner enclosure's lower temperature 

Easy Maintenance 

• 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.