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The 1/2" x 3" single-flat shaft is paired with double-sealed ball bearings and automatic thermal overload protection
A failed Bard 8406-078 will typically prevent the unit from firing
This furnace burner nozzle is a direct-fit solution for restoring factory-standard performance in residential and light commercial heating systems
replacing a compromised burner flame spreader is essential for maintaining optimal fuel-to-air ratios and preventing carbon monoxide buildup due to incomplete combustion
the assembly includes a rigid thermoplastic conduit box with a 1/2-14 NPT female thread
Lochinvar & A.O. Smith 100217965 Pressure Switch 321702-401 The 1/2" x 3" single-flatThe Lochinvar & A. O. Smith 100217965 Pressure Switch is a critical safety component designed for precise monitoring of the combustion air sequence in high efficiency water heaters and boilers. This 2. 3" WC blocked inlet pressure switch functions as a normally open contact that closes when the inducer fan generates the required negative pressure, ensuring the venting system is clear of obstructions before ignition. Engineered for compatibility with