Watts 0182405|WW0182405 - N50D

This dual switch assembly low water cut-off is used on heating applications for low pressure, process, hot water heater boilers to protect them against emergency low water conditions. It has a float chamber that has 1 inch NPT female top and bottom connections. This is a double switch assembly. It is for line voltage burner service and independent low (or high) voltage alarm, feed valve or pump starter.