Backward curved fans pull system air using single thickness impellers that point away from the direction of the fan rotation, providing quiet, smooth operation. These fans are highly efficient relative to radial blade or radial tip fans, and offer universal service in clean to moderately abrasive environments. Considered “cheap to keep”, backward curved fans feature a non-overloading brake horsepower curve, achieving efficiencies of 80 – 82%, and can be used with or without scroll housing.
While backward curved fans are highly efficient, their construction properties can limit pressure capabilities, and subject them to material build-up.
Process Barron engineers and service technicians can accurately assess your operation’s air handling requirements and design, manufacture and install the right sized backward curved fan in your system to minimize operating costs. Our rugged mechanical draft fans are designed for longevity and efficiency in air, gases, dust, and material handling applications.
Contact Process Barron today to discuss your fan and system needs, if you have a damaged fan or require emergency field service assistance. Our qualified engineering and service teams are eager to earn your business and help you maintain an efficient operation.
Backward Curved Fan Construction & Accessories
At Process Barron, new mechanical draft fans are performance rated in accordance with AMCA standards, rigorously tested and quality checked for proper rotating assembly operation (ANSI standards), rotor resonance properties, and overall fan performance. Our industrial fans are fabricated to endure long-lasting use in high temperature, high pressure, corrosive environments from materials including Hastelloy, ASTM 36, high strength carbon steels - A514/A517 and exotic alloys.
Common mechanical draft fan accessories/options include:
- Inlet & outlet dampers
- Expansion joints
- Access doors
- Standard NEMA Motors
- Spark resistant construction
- Extended life bearings
- Special coatings
- Silencers & insulation