Chicago Blower has developed a series of 16 higher-pressure blowers that are suited to combustion air, aeration, cooling and drying systems, and other high-volume processes. The blowers support pressures of up to 91-inch water gauge and volumes of up to 18,000 cubic feet per minute. Features include a lightweight aluminum alloy wheel design to reduce motor loads. Designated "constant velocity," the convex wheel sides and precisely shaped air chambers maintain consistent velocity to produce a stable flow across the entire performance range, while also reducing sound levels. The Design 53 single-stage pressure blower (shown here), which is also commonly used in pneumatic conveying systems, is available in fan sizes of between 4 inches and 14 inches. (