AMETEK Specialty Motors Through Flow Motors

AMETEK Floorecare & Specialty Motors manufactures a wide range of through flow motors for the commercial floorcare, central vacuum, commercial and industrial applications. In Through flow motors the work air travels through the fan system and is discharged directly over the motor windings as it exits, so the work air also provides cooling for the motor. Typical applications are mostly in dry vacuum conditions since the work air is also the motor cooling air. Through flow motors are available in single and mutltiple stages. The stages are used to create more pressure if used as a blower or more lift if used as a vacuum. Single stage motors typically have the highest air flow and lowest vacuum levels. Adding fan stages increases the vacuum capability of the unit but reduces the air flow. This is because of increased impedance to air flow through the system, the result of additional fans (rotating and stationary) through which the air must pass.