Lochinvar & A.O. Smith 100109951 Pressure Switch 319847-401 making it suitable for steam

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

manages the timing of resistive heating elements to prevent high-amperage inrush from tripping circuit breakers

this assembly includes the specialized elbow joint and P-trap body required for vertical or horizontal cabinet configurations

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

Using it with non-compatible hardware can result in reduced magnetic field strength and valve performance failures

Lochinvar & A.O. Smith 100109951 Pressure Switch 319847-401 making it suitable for steamWhen 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.