McDonnell Miller Low Water Cut-Offs

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McDonnell Miller Series 63

Low Water Cut-Off

For residential, commercial, and industrial applications.
Heavy Duty
Includes No. 2 switch
Optional manual reset available.
Maximum boiler pressure 50 psi.

Quick Links

Series 63 Cut-Sheets
Series 63 Parts Breakdown
Series 63 Float Repalcement
Maintenance Schedule

McDonnell Miller Series 64

Low Water Cut-Off

For residential, commercial, and industrial boiler applications of any steaming capacity.
Heavy Duty.
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
Optional manual reset.
1" NPT equalizing pipes required.
Maximum boiler pressure 50 psi.

Quick Links

Series 64 Cut-Sheets
Series 64 Parts Breakdown
Series 64 Float Replacement
Maintenance Schedule

McDonnell Miller Series 764

Low Water Cut-Off

For residential, commercial, and industrial boiler applications of any steaming capacity.
Heavy Duty.
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.
2 1/2" NPT side tapping provided for installation with close nipple.
Maximum boiler pressure 50 psi.

Quick Links

Series 764 Cut Sheets
Series 764 Parts Breakdown
Series 764 Float Replacement
Maintenance Schedule

McDonnell Miller Series 61

Low Water Cut-Off

For residential, commercial, and industrial applications.
For boilers of any steam 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.

Quick Links

Series 61 Cut-Sheets
Series 61 Parts Breakdown
Maintenance Schedule

McDonnell Miller Series 67

Low Water Cut-Off

For residential, commercial, and industrial applications. For boilers of any steam capacity.
Quick hook-up fittings provided.
Lever-operated, full port ball valve for easy blow down .
Optional features - low voltage switches for self generating millivolt circuits & manual reset switch.
Maximum steam pressure 20 psi.

Quick Links

Series 67 Cut-Sheets
Series 67 Parts Breakdown
Maintenance Schedule

McDonnell Miller Series 69

Low Water Cut-Off

For residential, commercial, and industrial applications. For boilers of any steam capacity.
Optional low voltage switches for self-generating millivolt circuits.
Maximum steam pressure 20 psi.

Quick Links

Series 69 Cut-Sheets
Series 69 Parts Breakdown
Maintenance Schedule

McDonnell Miller Series 150S

Low Water Cut-Off

For residential, commercial, and industrial applications. For boilers of any steam capacity. Monel bellows provides corrosion resistance.
Mercury switches for high temperature service.
Maximum pressure 150 psi.

Quick Links

Series 150S Cut-Sheets
Series 150S Parts Breakdown
Series 150S Head Replacement
Series 150S Snap Switch Replacement
Series 150S Bellows Replacement
Maintenance Schedule

McDonnell Miller Series 157

Low Water Cut-Off

For residential, commercial, and industrial applications. For boilers of any steam capacity. Monel bellows provides corrosion resistance.
Float chamber with integral water column provided
Mercury switches for high temperature service.
Maximum pressure 150 psi.

Quick Links

Series 157S Cut-Sheets
Series 157S Parts Breakdown
Series 157S Head Replacement
Series 157S Snap Switch Replacement
Series 157S Bellows Replacement
Maintenance Schedule

McDonnell Miller Series 157S

Low Water Cut-Off

For residential, commercial, and industrial applications. For boilers of any steam capacity.
Monel bellows provides corrosion resistance.
Float chamber with integral water column provided
Snap action switches for high temperature service.
Maximum pressure 150 psi.

Quick Links

Series 157S Cut-Sheets
Series 157S Parts Breakdown
Series 157S Head Replacement
Series 157S Snap Switch Replacement
Series 157S Bellows Replacement
Maintenance Schedule

McDonnell Miller Series 767

Low Water Cut-Off

For residential, commercial, and industrial applications.
For boilers of any steaming capacity.
2 1/2" NPT body tapping for side mounting on boilers.
Lever operated, full port ball valve for easy blow down.
Adjustable BX outlet for easy installation.
Large float chamber.

Quick Links

Series 767 Cut-Sheets
Series 767 Parts Breakdown
Maintenance Schedule

McDonnell Miller Series 42

Low Water Cut-Off
/Pump Controllers

For residential, commercial, and industrial low and medium pressure steam boiler with a separate water column.
Monel bellows provides corrosion resistance.
Single pole, single throw mercury switches.
Optional features - quick hook-up fittings, gauge glass connector, & BSPT threads.
Maximum pressure 50 psi.

Quick Links

Series 42 Cut-Sheets
Series 42 Parts Breakdown
Series 42 Head Replacement
Series 42 Snap Switch Replacement
Maintenance Schedule

McDonnell Miller Series 93

Low Water Cut-Off
/Pump Controllers

For commercial, and industrial, low or high pressure steam boilers.
Maintains consistent water level regardless of pressure.
No. 5 switch.
Magnetic repulsion eliminates need for bellows.
1" NPT connections.
Maximum pressure 150 psi.

Quick Links

Series 93 Cut-Sheets
Series 93 Parts Breakdown
Series 93 Float Replacement
Maintenance Schedule

McDonnell Miller Series 94

Low Water Cut-Off
/Pump Controllers

For commercial, and industrial, low or high pressure steam boilers.
Maintains consistent water level regardless of pressure.
No. 5 switch.
Magnetic repulsion eliminates need for bellows.
1 1/4" NPT connections
Maximum pressure 250 psi.

Quick Links

Series 94 Cut-Sheets
Series 94 Parts Breakdown
Series 94 Float Replacement
Maintenance Schedule

McDonnell Miller Series 193

Low Water Cut-Off
/Pump Controllers

For commercial and industrial low or high pressure steam boilers.
Maintains consistent water level regardless of pressure.
Water column with integral tappings for gauge glass and tri-cock installations.
No. 5 switch.
Magnetic repulsion eliminates needs for bellows.
1" NPT connections.
Maximum pressure 150 psi.

Quick Links

Series 193 Cut-Sheets
Series 193 Parts Breakdown
Series 193 Float Replacement
Maintenance Schedule

McDonnell Miller Series 194

Low Water Cut-Off
/Pump Controllers

Quick Links

Series 194 Cut-Sheets
Series 194 Parts Breakdown
Series 194 Float Replacement
Maintenance Schedule

Contact Us Directly:

Toll Free: 1-800-780-3776
Int'l Phone: 770-957-9599
Int'l Fax: 770-957-9563
E-Mail: Email Your Request

Mailing Address: Power Plus International
143 McDonough Parkway
McDonough, GA 30253