Positive Displacement Blowers and Blower Packages

A PD blower (positive displacement blower) is designed to move air or gas in a consistent flow, regardless of system pressure changes. Commonly used in industries such as chemical processing, agriculture, bulk transport, and wastewater treatment, PD blowers provide reliable airflow for demanding applications.

From the legendary Sutorbilt to the rugged and reliable DuroFlow to the high-efficiency CycloBlower, Gardner Denver offers the industry’s best selection of PD blowers to meet your application needs.

PD blowers vary in design and operation but share the same purpose: moving materials efficiently by trapping and discharging air.

• Straight Bi-Lobe Blowers - Two figure-eight rotors deliver reliable airflow for various industrial uses. 
• Straight Tri-Lobe Blowers - Three-lobe design reduces noise and pulsation for smoother operation.
• Twisted Tri-Lobe Blowers - Helical tri-lobe rotors provide even smoother pulses, extending bearing life. 
• Helical Screw Blowers - Advanced screw design for superior energy savings.
• Blower Packages - Plug-and-play solutions simplify installation and reduce noise with integrated enclosures.

PD Blowers operate by drawing air into the inlet port and trapping it between the rotors and casing. As the rotors turn, the air is displaced and forced out through the outlet pipe or hose. The term “positive displacement” refers to the fixed air volume being moved from inlet to outlet with each rotation.