Fumes emitted into the air by chemicals or gases can be captured and controlled by air moving fans and ventialtors. CBC Blower offers clean air and dirty air fans that move contaminated air to dust collecting systems like oxidizers, scrubbers, and bio filters. Our high efficient fans are constructed with special alloys and shaft seals to withstand any chemical gases and fumes and prevent corrosion.


Distributors of Industrial Centrifugal Air Blowers, Heavy Duty Tube Axial Fans and Man Coolers
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Centrifugal Blowers

Induced Draft Fan

Forced Draft Fans

Furnace Blowers

High Pressure Blowers
kitchen exhaust blower Quick delivery of portable ventilation blowers, ventilating fans, industrial centrifugal exhaust fans, heavy duty exhaust ventilators, duct fan blowers, high pressure pressure blowers, restaurant kitchen exhaust fans UL762 / UL705, squirrel cage ventilators, garage exhaust fans, dust collection fans, shop exhaust ventilators, blow off pressure blowers, fune exhaust fans, ventilator blades, oven ventilators.
Paint Shop Blowers

Dust Collection Blowers

Kitchen Exhaust Blowers

Cooling Blowers

Tube Axial Fans &
Man Coolers

Exhaust Fans

    Air Blowers are used for smoke and contaminated air exhaust in industries and for kitchen exhaust in commercial applications. Selection of suitable blower mainly depends on following factors:

  1. Volume of Plant / Kitchen facility.
  2. Quantity of smoke generated.
  3. Potential hazard of smoke to the manpower / equipments inside the establishment.
  4. Ducting layout and size.

    Exhaust Fans are generally designed to delivery high volume of air at considerably low static pressure (but still sufficient enough to overcome the ducting resistance) 

Cooling Blowers

    Centrifugal Blowers are used for cooling applications such as in Air Handling Units, Air Washer Unit, Cooling Systems and Machines in various industries.

Air volume for cooling blower may vary from 300 CFM to 100,000 CFM.

Engineering of through the wall exhaust fans, airflow exhaust ventilators, fume hood exhaust fans, roof / wall supply blowers, paint booth ventilation fans, high pressure air blowers, air pressure blowers, high temperature air blowers, rotary air blowers, air fan-blowers systems, roof blowers, roots blowers, oven / dryer exhaust ventilators, heavy-duty ventilation fans, spray booth exhaust fans, New York blowers, Dayton fans, Chicago blowers, American Coolair ventilators, ACME ventilators, Twin City fans, Aerovent fans, Cincinnati blowers.
If ventilation system has not been properly maintained, clogged filters or obstructed coils will reduce airflow. The greater the obstruction, the greater the loss in airflow. Any leaks in the ductwork will contribute to reduced performance, especially leaks around plenum bulkheads that can lead to recirculation of air. Worn flexible connectors are a common source of leaks and should be inspected regularly. If the damper linkage is out of adjustment, the damper may not be opening completely, thereby reducing performance. If inlet dampers are used, make sure they are installed so that the air is pre-spun in the same direction as wheel rotation. For all dampers, make sure there is sufficient clearance for the blades to open and close completely without hitting the ductwork or other system components. Last, for systems with either pneumatic or electric controls, make sure damper actuators are operating properly. Sharp changes in the direction of airflow at either the fan inlet or outlet will disrupt the flow through the fan and impair performance. If it is impossible to straighten the ductwork entering and leaving the fan, the use of inlet boxes and turning vanes can minimize performance losses.

Industrial processes and plant ventilation systems often need more air than originally designed. Increased production requirements, process changes, and facility renovations are a few of the major reasons. Additionally, the lack of adequate maintenance over time can negatively impact system airflows. This article discusses several procedures that can increase airflow. Often airflow can be increased by adhering to proper fan maintenance procedures as outlined in fan installation and maintenance literature.

Fan speed can decrease by as much as 10% to 20% when belts are too loose, with a corresponding loss of airflow. A fan cannot perform as designed if the air flow surfaces are distorted by contaminants. Even in large fans, a sixteenth of an inch of build up can reduce performance. Centrifugal fans will move some air even when running backwards. While some types would use so much horsepower they would trip circuit breakers, other design s could run for years without being detected. Fan components may be out of position due to routine cleaning or painting or the wheel could have shifted during shipment. For backward inclined fans, the relation of wheel to inlet cone is very critical. Even a quarter of an inch can have a major impact. The fan’s installation and maintenance literature shows the proper positioning of the wheel to the inlet cone.

One of the easiest solutions to low airflow problems is speeding up the fan. While airflow is increased by speeding up the fan, so too are static pressure, noise, and power requirements. Therefore, while increasing the fan’s speed is an easy procedure with low first cost, the additional operating expense over time makes it the most costly solution. When increasing fan speed, it is necessary to check the maximum safe speed of the fan and make sure the motor is capable of the horsepower required to run the fan at the new speed. But never run a fan beyond its maximum safe speed.

On a first-cost basis, adding or replacing fan equipment is the most costly alternative. However, on a life-cycle-cost basis, considering operating and maintenance expense, it can be the least expensive, as compared to increasing the speed of an existing fan. Sometimes a second fan may be added, either in series or parallel with the original, although it may be more cost effective to simply upgrade the system with a new fan capable of the required airflow and pressure. Adding another fan in series will increase the airflow because of the additional pressure. The operating point of the new system moves further out/up the system curve. Where duct size is adequate to handle the desired amount of air but the existing fan doesn’t provide sufficient pressure, a second fan in series may be the best solution. However, make sure the ductwork can handle the increase in pressure. Adding another fan in parallel with the first will increase airflow due to the combined capacities. Because capacities are being combined instead of pressures, a greater increase in airflow will result for a given system. However, system pressures will also increase and caution is required to avoid the unstable operating area of the combined fan system.

When more air is required it is important to investigate the system on a step-by-step basis, considering the least expensive possibilities first. For existing systems that seem to have lost performance, fan and system maintenance is the place to start. Often, simply improving the efficiency of existing components will suffice. For systems that require greater airflow and / or pressure, increased fan speed is generally the first alternative. However, when large increases in performance are required, there may be no alternative but to purchase a larger fan.