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The McDonnell & Miller 157S-R (Part Number 176220) is a heavy-duty
Is this a direct replacement for Honeywell VR8304M models
Does this include the float valve or distribution tube
offering a seamless mechanical and electrical fit
Efficient Flow Rates: A high 11
Lochinvar & A.O. Smith 100278133 Pilot Assembly 318423-701 The McDonnell & Miller 157S-RThe Lochinvar & A. O. Smith 100278133 Pilot Assembly is a critical combustion component for maintaining reliable ignition and flame sensing in high efficiency commercial and residential water heaters. As a factory authorized OEM heating part, the 100278133 ensures precise gas flow and millivolt output, securing the burner cycle against intermittent dropouts. This specific assembly serves as the updated, direct replacement for 100165902, featuring
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