Industrial powerroof fan ventilators for air exhaust and supply. Dales of replacement fan propeell wheels and axial fan blades, aluminum and SST or FRP.
Canadian fans blowers

Buffalo Power Roof Ventilators and Make-Up Air Fan Heaters

Buffalo Style H Sky-Vent Power Roof ventilators provide clear evidence of the continued leadership of Buffalo in the engineering development and manufacture of ventilating fan packages for industrial and commercial ventilation. Buffalo Forge Company incorporated BREEZOs design T, Design 53 Belt-Airs, Design 80, Design 65 and Design 50 NV fans, Type B fans, including LB, MB, HB pitched props, Types K and Type F fans Design T, AEROPROP design 53 and Design C, Type K, Type F fan components covering sizea ranging from 12" to 120" fan wheel diameters with capacities from 2200 CFM to 210,000 CFM, and heating capacity up to 4,500,000 BTU/hr.

Style H Sky-Vent Exhaust Power Roof Ventilator is a factory assembled package fan unit constructed to withstand hurricane winds. Its construction incorporates mushroom head, or hood head with bird screen, which is hinged to a box-style stack, supplied with access door. For higher capacities stack can be substituted with tubeaxial, or vaneaxial fan. Curb caps are welded to the curb side of the stack. Fan panel assembly is located near the top. Back-draft stack dampers are standard option. Disconnect safety switch is mandatory for roof mounted fan units.

Style H Sky-Vent Supply Power Roof Ventilators are supplied with optional filter rack and filter package protected by bird and insect screen. Motorized back draft dampers are standard on all supply air fans. Filtered mushroom head features channel type filter racks, bird screen, hinged connection to the stack box. Special coatings are available upon request. Fan panel is of double orifice design to allow for supply / exhaust, or reverse-flow fan operation. Discharge diffusers are available in variety of styles.

Style H Sky-Vent Make-Up Air Roof Ventilators are available with direct gas fired heater, or steam / hot water coil packages. Seven fan arangements are available for efficient control of the air flow in various modes on operation: fresh air /return air / by-passs air, in fan arrangements: A, B, C, D, E, G, and G.

FRP Fan Construction - Fiber Reinforced Polyester corrosion resistant construction is available for all hooded power roof ventilators along with protective coatings for corrosive exhaust fumes, or atmosphere, including synthetic vinyl plastic and cathalytic epoxy coatings.

Corrosion resistant ventilator construction and chemical duty construction: for corrosive environment all fans are avaialble in 304 SS, 316 SS, or 316 L stainless steel construction. Spark resistant fan construction is available in all aluminum construction; wheels are made of special alloys for non-sparking ventilator airtsream construction.

Industrial Blowers vs. Industrial
It may seem that industrial fans and industrial
blowers are the same since they are both
designed to move air. In reality, there is a
distinct di􀃡erence between them, which
includes how they move air, where the air is
directed, and the pressure they create.
The 􀃕rst distinction is how a fan and blower
move air. A fan uses a rotor and blades to
move the air around it, such as in a
warehouse or other open space, to increase
􀃖ow and air movement. A blower is a
directional air movement tool that is pointed
in a single direction and creates a 􀃖ow of air in
that one direction.
The next di􀃡erence is their construction. A
fan is axial and uses its blades, rotor, and
motor to move air along its axis in multiple
directions. A blower is radial and uses a
centrifugal powered unit with impellers to
move air radially. Additionally, fans are much
smaller and use less energy than blowers.
In regards to air pressure, a fan has an air
pressure ratio of 1.11 between the pressure
at which air enters and leaves the fan. The
ratio for a blower is between 1.11 and 1.20
with a pressure rise between 1136 to 2066.