Also identified as a water heater flame rod or igniter-flame sensor assembly

threaded interface that simplifies future maintenance by eliminating the need for repeated brazing at the service valve connection

featuring a permanently lubricated design that minimizes maintenance calls and prevents premature motor failure

This 48 Frame motor features a TEAO (Totally Enclosed Air-Over) enclosure and Class F insulation

Its precise calibration helps maintain system efficiency and longevity

McDonnell & Miller 159S Controller THPU32HP7Y Also identified as a waterThe McDonnell & Miller 159S Controller (Part Number 178802) is a specialized combination low water cut off and pump controller designed for heavy duty commercial and industrial steam boiler applications. Operating at a maximum pressure of 150 psi, this unit integrates a float operated mechanism with dual bi metal snap acting switches to ensure precise level management. The configuration features one SPST switch dedicated to pump control and a second