Rotary Lobe Blower Packages

Rotary Lobe Blower Packages - The DEFENDER™ Series

The HOFFMAN DEFENDER™ Series features rotary lobe blower packages with 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. Lobe blowers in the DEFENDER™ Series offer innovative components and design. 

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 best efficiency. 

Ease of Maintenance - with simple and robust construction. 

Hoffman and Lamson Lobe Blower Solutions

With flexible configurations and enhanced technical features, our rotary lobe blower package is the perfect solution for a broad range of environmental applications. System components include: 

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

• 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

Learn More About Positive Displacement Blowers