Oil-Free Screw Blowers

HOFFMAN | DEFENDER™ OIL-FREE SCREW BLOWER Your trusted partner for Wastewater Solutions. In a competitive global market, our long history of supplying blower solutions to suit our customers’ unique requirements sets us apart from the rest. Using modern machining systems and state-of-the-art production processes, our product range is constantly evolving. With a presence in over 50 countries, we offer local service capability, ensuring our advanced technology is backed by technical support. One of our latest product innovations is the HOFFMAN DEFENDER™ Screw Blower with innovative components and...

Our team of highly skilled and experienced engineers is focused on developing products that offer maximum benefits to our customers. With flexible configurations and enhanced technical features, the DEFENDER Screw blower package is the perfect solution for a broad range of environmental applications, including Municipal Wastewater Treatment. In wastewater treatment plants, energy consumption accounts for over 50% of annual costs. The DEFENDER Screw blower range meets all cost reduction requirements, allowing customers to save between 15% and 30% on energy consumption when compared with other...

The air ends used here are from a state-of-the-art, patented screw blower with 3x5 profile rotors designed with wide-diameter shafts to reduce the deformation caused by internal and external loads, thereby ensuring the blower can work efficiently in even the harshest conditions. Take advantage of the one solution for both lobe and screw blower technologies. Whether revamping plants, or your processes, you can review and compare each technology’s benefits for your operation before you commit to buy. Either way, the DEFENDER Lobe and Screw will fit your requirements. As it can be transported with...

The expense of a blower ownership is comprised of equipment, installation, energy, and maintenance costs. Equipment and installation are a one-time expense, while energy and maintenance are continuous costs of ownership. DEFENDER Screw ensures a high level of efficiency (> 75%) within a wide compressor rotation speed range reducing energy consumption. In addition thanks to its robust construction and use of minimum parts contribute to high reliability and long intervals between maintenance. The optimum efficiency of the internal compression, guaranteed by an innovative rotor profile, means less...

DEFENDER CONNECT The touch screen controller is very user friendly with an intuitive menu. It provides you with a real-time view of the DEFENDER Screw's operation, and allows you to continuously monitor the device. This ensures you spot problems and malfunctions before they happen thereby protecting your investment. The controller manages a variety of operating functions available from the built-in screen, as well as remotely. You can monitor and configure each measured parameter and alarm from any display using a remote connection via Ethernet. • 44 analog and digital inputs/outputs • Remote...

FRAME SIZE OPERATIONAL DATA* *Atmospheric air: absolute pressure 14.7 psi, Temperature 68°F, Relative Humidity 36% **Flow tolerance of ± 5%

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