Distributors of New
York sales of industrial high pressure
blowers and OEM venilating fans = from Buffalo, New York.Engineering of Canadian Blower / Chicago high
temperature fans, process pressure blowers, regenerative pressure
industrial; process and commercial heating; ventilating and
Industrial Air Testing Fans
We offer different industrial
type air testing fans that are precisely engineered by our technical
team so that they are ideal for usage in various industries. Theseair
testing fans can be customized for our clients according to mutually
Duct Leakage Testing Fans are offered for applications in the HVAC
industry sector and meet the requirements of scientific air leakage
These fans are ideal for medium / high pressure ductworks and are
using random sampling at post operation stage.
Suppliers of cool air
blowers, high volume air ventilators, air blower motors, pneumatic
blowers, compressed air blowers, suction pressure blowers, air blower
compressores, high pressure axial fans, propeller fans, axial prop
fans, industrial fan motors, big industrial fans, large industrial
ventilators, industrial blower systems, explosion proof ventilation
fans, rooftop fans and ventilators, shop fans, building ventilation
Industrial duty fans,
steel / special alloy, FRP, alumnum combustion blowers and fans. Sales
fan blower imperres and wheel blades, SST axial fan ventilators,
dust collection ventilators and pneumatic pressure blowers.
OEM industrial and process
ventilation equipment -
blowers, fans, ventilators; Buffalo Blower, New York pressure blowers
circulating plug fans; packaged air handlers; wall / roof exhaust fan
units. Economical small pressure blowers -
APB series fans:
Fan performance tables are based on laboratory test data and are
sometimes referred to as "test curves". A typical test curve will often
define the performance parameters for a specific design and size of
fan, operating at a given speed, moving a gas of a given density.
Inspection of this graph will show that it is actually composed of four
• Static Pressure vs. Volume Curve: This plot is the one often referred
to as the "fan curve" or "characteristic curve" because it defines all
the possible pressure-volume combinations the fan is capable of
producing given stated conditions (i.e. rpm and gas density). Note that
this curve has two regions - one marked by dashed lines and the other
by a solid line. Fans must be selected so that the design point is
located on a solid portion of the curve, preferably in an area of high
operating efficiency. Operation on the dashed portion of the curve
should be avoided as it is a zone of potentially unstable performance.
For this reason it is wise to allow some reserve between the peak
static pressure and the design pressure to compensate for a higher
resistance to flow than anticipated by the design calculation.
• Static Efficiency vs. Volume Curve: In most instances it is desirable
to have a fan perform as close to its peak efficiency as possible. The
static efficiency vs. volume curve illustrates the efficiency of fan
performance at a glance.
• Power vs. Volume Curve: This plot illustrates the power draw of the
fan for any point on the characteristic curve.
• System Curve: The system curve defines the volume flow rate versus
pressure characteristics of the system in which a fan will be
The fan curve is a graphic presentation of fan performance. It is one
of the most useful tools available during the fan selection process.
While multi-rating tables are convenient, performance curves offer
additional information such as - how much reserve pressure head exists
between the design pressure and the peak static pressure, the maximum
power the fan might draw, and the efficiency of operation.
For most applications, the volume flow rate to pressure relationship is
governed by the following equation, often called the "duct law":
Once the system designer has determined the system pressure loss (P)
for one flow rate (CFM), it is very easy to calculate the corresponding
pressure loss for any other flow rate using this "law". The system
curve is not included on the performance curve when it is issued from
the fan manufacturer and its determination is left to the system
At this juncture it is prudent to reiterate that a fan running at a
particular speed can have an infinite number of operating points all
along its characteristic curve. The fan will interact with the system
to produce an operating point at the intersection of the system curve
and the fan curve. Note that it is the system in which the fan is
installed that will determine the operating point on the fan curve.
Thus it is vitally important that the system designer accurately
determine the system losses in order to ensure that the actual air flow
rate is as close as possible to the design air flow rate.