McDonnell & Miller 172806 150S-M Low Water Cut-Off/Pump Controller

McDonnell & Miller 172806 150S-M Low Water Cut-Off/Pump Controller

McDonnell & Miller model number 150S-M is a 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 separate water column. This control features a manual 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 150 psi and it has a tapped 1″ FIP connection.