Combination float-operated low water cut-off and pump controller with maximum differential operation, which prevents nuisance burner shut-down in low pressure applications, for steam boilers with a water column. The controller has 1/2" NPT tappings for gauge glass and tri-cocks. This control features an automatic reset with two 120 volt bi-metal snap switches. One switch is single pole, single throw for pump control. The other is single pole, double throw for low water cut-off and alarm actuation. Its maximum pressure is 50 psi and it has a tapped 1" FIP connection.
|Manufacturer||McDonnell & Miller|
|Control Type||Combination Low Water Cutoff Pump Control|
|Switch Model||SWA 150S|
|Installation Method||1" Equalizing Piping|
|Maximum Pressure||50 psi|