Lochinvar & A.O. Smith 100109877 Pressure Switch 321042-401 the 14506636-002 door assembly should

the 14506636-002 door assembly should be used to ensure proper fitment and sealing

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

The Danfoss 0118F4112 serves as the updated technical successor

Since the 316059A is identical to 316059A/U

providing a fail-safe low water cutoff

Lochinvar & A.O. Smith 100109877 Pressure Switch 321042-401 the 14506636-002 door assembly shouldThe 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