Airfoil Centrifugal Fans Supplied By Buffalo Fan
SWSI and DWDI industrial aerofoil fan blowers are supplied in welded heavy gauge steel construction to prevent flexing at high pressure
. Buffalo centrifugal fans are available in direct drive arrangements 4/4V/4H/7/8 and belt drive arrangements 1/3/9. CBC airfoil fans are Available in single width single inlet (SWSI), or double width double inlet (DWDI). Capacities: to 500,000 CFM. Static pressure up to 50 inches water gauge depending on the class of construction. Typical class of construction is Class 1, 2, 3, 4 and 5.
Supply air or clean exhaust application is ideal for Buffalo Fan Canada SQA airfoil fans. For dirty air or dusty air, the Buffalo Fan SQB version with backward inclined blades is recommended. The SQA is also suited for high temperature gases handling as well as for air conveying applications.
Buffalo Fan industrial aerfoil (AF) blowers and fans are supplied with aluminum wheel or corten wheel to meet requirements of AMCA A, and AMCA B spark resistant construction. Mild steel wheels are of all welded construction. If higher pressure is required wheel can be furnished of high strenght steel. Stainless steel wheel in 304 SS, 316 SS, 316 SS, 2205 SST are supplied for corrosive applications, or high temeparature applications. The pressure curve remains stable at the top are of the fan curve and to the right of the pick point.
Inlet flanges, outlet flanges, companion flanges are continuosly welded to match ANSI class 125/150, DIN, ISO, or custom hole pattern. Shaft seal and low leakage construction can be furnished with shafting straightened to close tolerance to minimize "run-out" and ensure smooth operation. Teflon shaft seal, ceramic shaft seal and lubricated shaft seals (Buna, Teflon, Viton) are standard. Red silicone gasketing is provided for low leakage construction and for high temperature construction. Heavy-duty spherical roller bearings are standard.
Buffalo Fan heat fan construction goes up to 1000 F and includes high temperature paint, shaft cooler, shaft-cooler guard, and steel wheel, or alloy wheel. Cladding for sound attenuation and silencers consists of 2 inches mineral-wool insulation covered with a welded steel jacket. As an inexpensive alternative is offered slide-on acoustic cloth jackets. Inlet silencer/outlet silencer are supplied with matching flanges for further attenuation of the noise level.
Inlet filter assemblies available are available too: cell type, 1 inch, or 2 inch filters are available with filter cabinet to be mounted at fan inlet. Bird guard, insect screen and weather hood are optional accessories with inlet filter package.
Standard Buffalo fan / blower accessories include: flash / raised access door, inspection port, drain and plug, unitary base, shaft and bearing guard, belt guard, motor cover, spring vibration isolation, rubber-in-share (RIS) vibration isolation, vibrating pads, outlet damper, inlet vane damper, external inlet vane damper, evase, electrical / pneumatic actuators.
Oleg Tchetchel
Ventilation Design Engineer
Buffalo Fan Co.
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by: Oleg Tchetchel
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