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Pressure Air Fans (PA)
To meet specific applications, PA fans can be built with stainless steel or alloy construction. Split housings facilitate wheel removal without disturbing connecting ductwork. Integral inlet boxes, pre-spin inlet dampers and opposed-blade outlet dampers all control air flow. Belt guards and shaft coolers are also common options, in addition to the various housing and wheel liners. Chicago Blower engineers are eager to design and build the pressure fan that meets your exact requirements.
Product Bulletin: PA
Operation & Maintenance Manual: Heavy Duty Fans
Pressure Air Fan Applications
Chicago's Pressure Air Fans are at work in as many diverse applications as they are in locations throughout the world. Clean air applications include combustion air, air drying primary air ejectors, and product cooling. This fan can also handle pneumatic conveying systems. The Pressure Air Fan is ideal for corrosive exhaust, air pollution systems and chemical processing. By adding ceramic tile or chromium carbide wheel and housing liners, Chicago's Pressure Air Fans easily handle abrasive materials. In particular, fans with ceramic tile liners are extremely effective in pulverized coal applications, handling up to 250 grains per cubic feet of air. For corrosive gases, a stainless steel wheel and housing is available, or a lower cost rubber-lined, mild steel housing will often fulfill the requirements.
Fan Options
  • Integral inlet box
  • Unitary base
  • Multiple arrangements
  • Split housings
  • Leak resistant construction
  • Rubber lined housings
  • Various blade liner materials
  • Scroll and side liners
  • Heat treated wheels
  • Motor jack bolts
  • Fan jacking bolts
  • Stainless steel shaft sleeves
  • Spark resistant Type "C"
  • Continuous welding
  • AWS welding
  • API 560 and 673 features
  • Wheel balance to G2.5 and lower
  • Companion inlet or outlet flanges
  • Inlet or outlet dampers
  • Quick-clamp or raised bolted access doors
  • Belt guard
  • Shaft cooler
  • Multi-guards
  • Evasé
  • Isolation springs
  • Vibration detectors
  • Cooling wheels
  • Low leakage seals
  • Flanged and valved drains
  • Spacer couplings
  • Spray nozzles
  • Sleevoil bearings
  • Trico oilers with oil level sight glasses
  • Thermocouples or RTDs
  • Speed sensors
  • Designed to meet specific customer performance and mechanical requirements
  • Available in arrangements 1, 3, 4, 7, 8, and 9
  • All housings are standard with welded construction throughout
  • Fans are equipped with flanged inlet and outlet, access door, drain, shaft seal, guards for shaft, bearing and couplings, and extended lube lines
  • Wheels to 150
  • Volumes to 440,000 CFM
  • Pressures to 108” wg
  • Temperatures to 1000°F
Alternate Fan Designs
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