Lochinvar & A.O. Smith 100173748 Cut-Off 30067439-890 This kit includes a high-grade

This kit includes a high-grade cam and plunger assembly and a stem extension

the Series 250 is designed for non-potable hydronic heating and storage tank applications

This model is typically supplied as an 8

Engineered specifically for 1/2 inch diameter shafts

This 24V DPST NO relay (Double Pole Single Throw

Lochinvar & A.O. Smith 100173748 Cut-Off 30067439-890 This kit includes a high-gradeThe Lochinvar & A. O. Smith 100173748 is a critical Low Water Cut Off (LWCO) safety control designed to protect hydronic and steam systems from dry fire conditions. Functioning as an Auto Reset sensor, this component continuously monitors the boilers water level and breaks the 24V control circuit to the burner if a low water threshold is detected. This specific HVAC replacement part is essential for maintaining operational safety in residential and