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The McDonnell & Miller 93-7B-HD (Part Number 163200) is a high-performance head mechanism only designed for direct replacement in Series 93 and 193 boiler water level controls
ensuring stable burner performance and optimal combustion efficiency
Corrosion Resistance: Heavy-duty galvanized metal construction prevents rust in high-moisture combustion environments
this part is used across several brands including Heil
Can I see the temperature through this cover
Carrier HK02ZB054 Pressure Switch 321702-401 The McDonnell & Miller 93-7B-HDFor mid to large scale commercial and residential HVAC units, the Carrier HK02ZB054 Pressure Switch is a critical safety component designed to maintain peak system performance. This 78 54 PSI low pressure switch effectively prevents compressor damage by interrupting the control circuit if refrigerant levels drop below safe operating thresholds. Operating on a 24V signal, this OEM Carrier replacement part is calibrated to open at 78 PSI and close at 54
