Lochinvar & A.O. Smith 100277758 Impeller 320819-301 Precision Seating: The RPTFE ball

Precision Seating: The RPTFE ball cone provides a tight seal and excellent wear characteristics across varying pressure ranges

561 Btu/h capacity and 200-230V 3-phase electrical profile match a wide range of commercial HVACR condensers

the pressure differential forces the balls against their seats

Durable Construction: High-quality solder joints and trace paths resist vibration and moisture infiltration common in high-static environments

the NEMA 1 housing includes a physical Override Switch

Lochinvar & A.O. Smith 100277758 Impeller 320819-301 Precision Seating: The RPTFE ballThe Lochinvar & A. O. Smith 100277758 Impeller is a precision engineered 4. 75 inch plastic component designed for high efficiency hydraulic systems. As the 100277758 direct replacement for 100133559, this part ensures seamless compatibility with Lochinvar boiler pump systems and A. O. Smith water heaters. For technicians servicing high efficiency fire tube boilers or commercial water heaters, maintaining proper fluid velocity is critical for heat