An open circuit (infinite resistance) indicates the element has failed

The S1-025-26390-001 is usually mounted on the divider plate or the furnace firewall

Common Questions: What is the difference between Watts 0383368 and the 740-1 1/4-60

Direct Compatibility: Exact 5-inch diameter and 41

this is a "TXV less flange" model

McDonnell & Miller 94-A Pump Controller R-22 An open circuit (infinite resistance)The McDonnell & Miller 94 A Pump Controller (Part Number 165500) is a heavy duty combination low water cut off and liquid level control engineered specifically for commercial and industrial steam boilers. Rated for a maximum pressure of 250 PSI, this float operated unit provides reliable burner protection and automatic feed pump cycling to maintain consistent water levels regardless of steaming capacity. Unlike standard models, the 94 A features 1 1