What is the difference between this manual reset and an automatic reset switch

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3 Cv flow coefficient with an equal percentage flow characteristic for superior modulating control

piping using the included spring clip

McDonnell & Miller 93-HD Pump Controller R-22 What is the difference betweenThe McDonnell & Miller 93 HD Pump Controller (Part Number 162400) is a heavy duty combination low water cut off and pump controller engineered specifically for commercial and industrial steam boiler systems. This unit features a specialized head mechanism designed for seamless integration into existing Model 93 or Model 193 float chambers. By utilizing two snap acting SPDT switches, it provides precise boiler feed pump control while ensuring critical