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Optimized Combustion: Includes calibrated propane orifices and regulator components to maintain correct manifold pressure and thermal efficiency
The stainless steel power assembly provides superior resistance to corrosion
The Apollo 10-600 series construction features a bronze body and stainless steel spring to resist corrosion and prevent seat sticking
Industrial Build Quality: Constructed with materials designed to withstand the rapid thermal expansion and contraction cycles of residential and light commercial heat exchangers
When replacing an expired coil
McDonnell & Miller 194-B-1 Replacement Casting 30067439-890 Optimized Combustion: Includes calibrated propaneThe McDonnell & Miller 194 B 1 Replacement Casting is a critical structural component designed specifically for the Series 194 Combination Low Water Cut Off and Pump Controller. As a veteran preferred boiler replacement part, this heavy duty water column casting features the standard 1 1 4 inch NPT steam equalizing tappings and integrated ports for gauge glass and tri cock sets. Engineered for high pressure environments, it maintains structural