Xylem-McDonnell & Miller 157S-A-M Low Water Cut-Off/Pump Controler 157A M/R W/Snap Switch

The Xylem-McDonnell & Miller 157S-A-M Low Water Cut-Off/Pump Controller 157A M/R W/Snap Switch operates as a dependable safety device in steam and hot water heating systems. The part controls boiler water level and activates automatic burner or pump shutdown when the water reaches a low point to protect system components from damage. The manual reset control of this device ensures system safety through proper water level maintenance. The HVAC industry utilizes this product to extend heating system while improving efficiency by safeguarding against overheating incidents and pump failures and system breakdowns.