McDonnell & Miller 157RD-1 Replacement Casting THPU32HP7Y What are the symptoms of

What are the symptoms of a failing Lennox ignitor

making it suitable for larger residential and mid-sized commercial gas appliances

Using the incorrect size will cause calibration errors and potential seal failure within the pneumatic cylinder

7" WC but the SPNO contacts fail to close

McDonnell & Miller 157RD-1 Replacement Casting THPU32HP7Y What are the symptoms ofThe McDonnell & Miller 157RD 1 Replacement Casting is a critical component for maintaining the integrity of 157RD Series low water cut off and pump controller units. This heavy duty replacement body allows technicians to restore a boiler water level control system without the expense of a full valve replacement. Designed for high pressure steam applications, this casting accommodates the dual switch mechanism used for low water cut off and pump