Laboratory

Direct Drive Blowers

General Features

Wheels

• Rugged industrial construction.
• Dynamically balanced for efficient operation with a minimum of noise.

Housings

• Made of heavy gauge, galvanized steel.
• Wide flange inlet collars facilitate easy connections of standard sized sheet metal pipe.
• Baked enamel finish withstands most atmospheric conditions.
• Field rotatable to eight different discharge positions.

Optional Features

• Spark-resistant construction.
• Chemical-resistant coatings.
• Inlet & outlet screens.
• Automatic backdraft dampers.
• Vibrations isolators, Rubber-in-Shear, Individual Spring Mounts or Spring Rails
• Weather covers.
• Outlet transition to 8” dia. round.
• Drain fitting.
• Special motors such as TEFC, Explosion Proof, 2-speed and variable speed.

Special Features

Forward Curve

• Quiet operation for fresh air supply and exhausting air from washroom kitchens, hoods, grinders, etc.
• Use low speed unit for quietest operations and high speed for applications involving higher static pressures.
• Available in either CW or CCW rotation.

Backward Inclined

• Non-overloading horsepower curve makes it possible to match the power output of the motor to the power requirement of the blower so both motor and blower are operating near their points of peak efficiency.
• Backward inclined self-cleaning wheel.
• Operating at pressures up to 51⁄2” S.P.
• Use to exhaust air through duct systems at relatively high pressures.
• Ideal for many industrial uses, including exhausting heat or fumes from laboratory hoods and welding and brazing operations.
• 3450 rpm models are intended mainly for industrial uses where higher pressures are required.
• 1750 rpm models are designed for use in commercial or residential buildings where quieter operation is needed.

Note: Rotation is determined when viewed from the drive side. (usually opposite the inlet side) or as viewed from the motor (or closed) side of the wheel.

Vertical Stacks & Transitions

Exhaust stacks are supplied in either galvanized steel, coated steel or stainless steel to match the blower construction. Connections are either slip fit (stack and blower are steel or coated steel construction) or flanged (stainless steel construction). Inlet and outlet transitions are available for most popular duct sizes. Specify slip fit or flanged connection.