Lochinvar & A.O. Smith 100109951 Pressure Switch 319847-401 Industry Standard Connections: Features 3/4"

Industry Standard Connections: Features 3/4" NPT threading for a secure

Operating at 115V with a rated speed of 3000 RPM

making it suitable for steam boiler and high-pressure condensate applications

the 1172577 is the direct technical successor to the 50CY500516

Key Benefits Precision Airflow: The 10x8 convex blade design maximizes air movement efficiency in both heating and cooling cycles

Lochinvar & A.O. Smith 100109951 Pressure Switch 319847-401 Industry Standard Connections: Features 3/4"When you are troubleshooting a pressure switch failure on a high efficiency hydronic system, the Lochinvar & A. O. Smith 100109951 is the specific OEM replacement part required to restore precise combustion air pressure monitoring. This air pressure switch is factory calibrated for the BTN 200 366 series water heaters and boilers, ensuring that the blower is moving sufficient air for safe ignition. As a normally open (NO) switch with a set point of 2.