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This specific part is the 12-inch replacement nickel probe
the Nordyne 621921R is the field-ready solution to restore system call-for-heat functionality
As a genuine factory replacement
EPDM is specifically designed for hot water and steam
SPST contact configuration
Lochinvar & A.O. Smith 100110588 Flow Switch 321042-401 This specific part is theThe Lochinvar & A. O. Smith 100110588 Flow Switch is a critical safety and monitoring component engineered for high efficiency hydronic systems. As an OEM replacement flow switch, this paddle style device is designed to detect the presence or absence of fluid movement, providing essential feedback to the appliance control board. It serves as a direct replacement for obsolete part numbers, including the A. O. Smith 9005680205, ensuring seamless
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