McDonnell & Miller 349400 Black Y Assembly Els PW 17895 this L160-20 temperature control provides

this L160-20 temperature control provides the exact thermal tolerances required to prevent heat exchanger damage and ensure professional-grade furnace performance

normally closed (NC) switch is factory-calibrated to open at 170°F

Broad ICP Compatibility: Direct replacement for various Heil Quaker

Leak Prevention: Eliminates steam bypass and prevents external leaks

This model serves as a versatile HVAC replacement part

McDonnell & Miller 349400 Black Y Assembly Els PW 17895 this L160-20 temperature control providesThe McDonnell & Miller 349400 Black Y Assembly (Model SA159 17) is a critical replacement component for low water cut off systems and mechanical water feeders. This assembly is engineered to integrate seamlessly with Series 47 and Series 47 2 water feeders, as well as Model 64 A and Model 42S A controls. As a primary part of the MA 159 and MA 259 quick hook up fittings, it enables technicians to perform direct installations into gauge glass tappings