McDonnell & Miller 61

McDonnell & Miller® 61 Automatic Reset Low Water Cut-Off, Mechanical Control, 1 Inch NPT, Dual Precision Switch, 20 psi 140100


Manufacturer part number:




McDonnell & Miller® 61 Low Water Cut-Off, Automatic Reset, Mechanical Control, 1 Inch NPT, 2 Switches, Dual Precision Switch, 120/240 V, Pilot Duty: 125 V, 20 psi, 6-1/2 Inch H x 5-1/8 Inch W x 9-15/16 Inch D

• For residential and commercial low pressure steam
boiler applications
• For boilers of any steaming capacity
• Adjustable BX outlet for easy installation
• Dual precision switches for dependable operation of the
low water cut-off and alarm or electric water feeder
• Packless bellows
• 1" NPT equalizing pipes and blow down valve required
• Maximum steam pressure 20 psi (1.4 kg/cm2)

Products specifications
Attribute nameAttribute value
Connection Type1 Inch NPT
Control TypeMechanical
Dimensions6-1/2 Inch H x 5-1/8 Inch W x 9-15/16 Inch D
Number of Switches2
Pilot Duty Rating125 V
Pressure Rating20 psi
Switch TypeDual Precision
TypeAutomatic Reset
Voltage Rating120/240 V