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Precision Thermal Sensing: High-sensitivity NTC element delivers accurate resistance signals to the boiler control module for fuel-efficient modulation
and 667261-C
providing high-accuracy response with minimal pressure drop
2 EER efficiency
McDonnell & Miller 328100 Replacement Casting 30067439-890 Precision Thermal Sensing: High-sensitivity NTCThe McDonnell & Miller 328100 is an authentic OEM replacement casting specifically engineered for the 157 R Series low water cut off and pump controllers. This heavy duty 157 R casting provides the structural foundation for your float chamber, ensuring a pressure tight seal in high demand residential, commercial, and industrial steam boiler applications. In the field, these castings are critical for maintaining system integrity when original housings
US$ 28.00
US$ 36.00
US$ 99.99