Lochinvar & A.O. Smith 100109877 Pressure Switch 321042-401 Key Benefits Universal Compatibility: Seamlessly

Key Benefits Universal Compatibility: Seamlessly integrates with the Wayne M-Series and W-Series chassis

Durable Construction: Specifically designed to withstand demanding furnace environments without premature fatigue or nuisance tripping

Adjusting the WC pressure to the manufacturer's specified LP setting is mandatory for safe operation

The Danfoss 0118F4112 serves as the updated technical successor

this forged brass body ensures a leak-proof installation when integrated into fan coil units

Lochinvar & A.O. Smith 100109877 Pressure Switch 321042-401 Key Benefits Universal Compatibility: SeamlesslyThe Lochinvar & A. O. Smith 100109877 Pressure Switch is a critical safety component designed for high efficiency commercial boilers and water heaters. This SPST pressure switch (Single Pole Single Throw) is engineered to monitor low gas pressure conditions, typically calibrated at a 5. 2" WC set point to ensure the system operates within safe manifold parameters. As an authentic OEM replacement part, it provides a direct fit for models including the