Description
The Xylem-McDonnell & Miller 157S-P Port Snap Switch float-operated low water cut-off and pump control device for steam boilers. To be carried out with a corrosion-resistant Monel bellows and side ports for easy installation. The switch has single pole single throw for control of pumps operations and single pole double throw for the low water level detection and alarm output. It is designed to be able to operate safely and reliably at pressures up to 150 psi in harsh thermal environments. It is well suited to installation in residential, commercial, and industrial boiler environments, and this switch encourages safety and efficiency in heating, ventilation, and air conditioning systems.
