140100 | Xylem | Pressure

The McDonnell & Miller 140100 model 61 is a low water cut-off for residential and commercial low-pressure steam boiler applications of any steaming capacity. It has 1" NPT female threaded connections and a maximum steam pressure rating of 20 psi. The switch has an automatic reset and uses a 120-volt or 240-volt power supply. The dual precision switch provides dependable low water cut-off and alarm or electric water feeder operation.