Lamb Ametek 6.6" 120V Bypass Motor for VacuMaid SR46, SR66, S1660 LW1500RS Use: pet stains

Use: pet stains

It is the internal disc that seats within the airflow path to direct or seal suction

and Koblenz's use of metal here reflects the abuse these uprights take in daily commercial use

In a thru-flow design the work air also cools the motor

If your upright has weak suction or whistles air

Lamb Ametek 6.6" 120V Bypass Motor for VacuMaid SR46, SR66, S1660 LW1500RS Use: pet stainsThe Lamb Ametek 122404 00 is a 6. 6 inch diameter, 2 stage bypass motor for 120 volt central vacuum power units. The large 6. 6" fan diameter delivers high airflow, rated at approximately 139 CFM with 132 inches of sealed water lift, for strong whole home suction. Bypass cooling keeps the motor running cooler by separating cooling air from the dirty work air stream. Part #122404 00 6. 6" diameter, 2 stage, 120V Bypass cooling design Approximately 139