Call us at:
or click below to have one of our knowledgeable and friendly representatives contact you:


A conventional propeller blade does not mix as much as it moves material out of its way.

Our patented ASC Tornado™ actually draws the material through the blade, achieving superior mixing capability. Instead of spinning the material out of the way, the blade works like an unchambered pump and thoroughly mixes the material. This Tornado™ action enables you to mix at substantially lower speeds and reduces mixing time by 50-80%! Let the ASC Tornado™ save you big $$$ on air and electrical costs!

Sizing a Mixer

The diameter of the blade should be 1/3 the diameter of the tank. For heavier materials, the blade diameter should be increased to allow maximum flow for the most efficient mixing.

Air Supply

Air hose should be 1/2" ID (Inner Diameter) minimum and as short as possible. Avoid using coil hose because of air pressure restrictions. 

Air Motor Maintenance

An FRL (filter, regulator, lubricator) is required to maintain clean, lubricated air. 10W high detergent oil is recommended.

Air Motor Pressure

Air motors operate most efficiently with controlled air input of 70-90psi.

Gear reducer

For a more viscous material, a gear reducer is required. The gear reducer transfers high RPM to low RPM, and low torque from an air/electric motor to high torque. This enables the blade to move at the desired speed to mix efficiently. ISO-460/SAE-140 weight synthetic oil is recommended for our gear reducers.

Air Motor / Gear Reducer

Air motors operate at 3,000 maximum effective RPMs. When using a gear reducer (10:1 ratio @ 300 RPM; 20:1 ratio @ 150 RPM), speeds can be controlled by adjusting the air flow through the needle valve.

Electric Motor / Gear Reducer / Speed Control

Electric motors turn constant at 1750 RPM. To control fixed speeds, a gear reducer is required (10:1 ratio @ 175 RPM; 20:1 ratio @ 87 RPM). If variable speed is desired, an inverter duty motor and gear reducer is required. Speeds can be controlled from maximum output RPM to 0 RPM. To learn more about our electric motor options click here.

Sizing Tanks

Round (48" x 52")

  1. divide Diameter by 2= Radius
  2. Radius X Radius X 3.14 = Area
  3. Area X Height = Cubic Inches
  4. Cubic Inches divided by 231 = Gallons

Square or Rectangle (48" x 48" x  52")

  1. 48 X 48 X 52 = Cubic Inches
  2. Cubic Inches divided by 231 = Gallons


As a general rule of thumb, we follow the formula described below for calculating the mixing rate in gallons per minute of material moved through our patented mixer blade. By using this mixing formula, you will see why the ASC Tornado™ is the most effective and efficient mixer on the market.

D = blade Diameter 

H = blade Height

N = Number of blades

RPM = Revolution Per Minute (shaft speed)

231 = Cubic Inches per gallon

V1 = Volume displaced per revolution

V2 = Volume displaced per minute

G = Gallons displaced per minute

² = Squared

∏ = 3.14

V1  = (D/2)² X  X H X N

V2 =  V1 X RPM

G = V2/231

Example: ASC-BRBG 2 blade 12" x 4" at 100 RPM

(12/2)² X 3.14 X 4 X 2 = 904.32

904.32 X 100 = 90,432

90,432/231 = 391.48 GPM displaced


Blade Diameter
Blade Height
Number of Blades
Revolutions per minute

Valued Displaced per Revolution (V1)


Valued Displaced per Minute (V2)


Gallons Displaced per Minute (G)