Positive Displacement Blowers & Blower Packages

Hoffman & Lamson's positive displacement blowers and blower packages are engineered to maximize productivity while minimizing energy costs in environmental and industrial processes. Our advanced PD blower technology delivers reliable airflow, operational flexibility, and dependable performance for municipal wastewater treatment and other critical aeration applications.

Whether you need a complete rotary lobe blower package or a high-efficiency rotary screw blower package, the HOFFMAN DEFENDER™ Series provides a compact, robust, and easy-to-maintain solution. Every blower package is backed by Hoffman & Lamson's experienced engineering team and local service network, ensuring ongoing technical support and reliable operation long after installation.

From new installations to system upgrades, our blower packages help operators improve efficiency, reduce lifecycle costs, and maintain uninterrupted performance. Explore the product options below to learn more about our rotary lobe and rotary screw blower packages.

Our Screw PD blower packages have rotors that turn in opposite directions to maintain precise alignment by means of timing. When the rotors mesh, they form a series of working chambers between the rotors and the casing wall. 

The gas is sucked from the intake side and trapped between the rotors and the casing and the cover. Then, it is transported to the compression side, or discharge, where the working chamber shrinks and the air or gas is compressed. The internal compression leads to a supply of steady, non-pulsating air flow. This minimizes vibration and maintenance; thus, maximizing the PD blower's lifespan. 

The HOFFMAN DEFENDER™ PD Blower Lobe and Screw packages are innovatively designed to operate as follows:

• Efficient thanks to patented rotors, which reduce the number of revolutions and enhance the capacity-pressure ratio
• Silent as a result of high-efficiency internal compression, silencers, and a noise-reducing enclosure
• Simple installation and configuration 
• Flexible to ensure efficient operation 
• Ease of Maintenance thanks to its simple and robust construction   

For more than a century, our customers have relied on the superior performance of our positive displacement blowers. Our extensive blower portfolio stands as a testament to our commitment to quality and innovation.

Each piece of equipment undergoes rigorous testing before reaching our customers or end-users, guaranteeing top-notch quality and preventing any potential issues or operational disruptions. This dedication to quality assurance has solidified Hoffman & Lamson's position as the leading global provider of engineered solutions. We take pride in delivering high-quality products efficiently and cost-effectively, making us the trusted choice in the industry.