McDonnell & Miller
Boiler Controls. McDonnell & Miller Low Water cut-offs are specially designed to protect steam and hot water boilers from the hazards of a low water condition. In operation they will interrupt the electrical current to the firing device, if the water in the system drops below the boiler manufacturer’s minimum safe water level. Our low water cut-offs also provide an additional circuit for a low water alarm, should you desire to install one, for additional protection.
If you have any questions please give us a call at 1-800-781-7405 or email us your request. Sales@NationalPumpSupply.com
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120361 McDonnell & Miller FS7-4WLJ Flow Switch 1-1 4BSTP
McDonnell & Miller
$574.95120361 McDonnell & Miller FS7-4WLJ Flow Switch 1-1 4BSTP. *Please note image is generic. McDonnell & Miller FS7 Overview McDonnell & Miller FS7 Instruction Manual Features: Universal design serves the widest variety of large pipe...$574.95 -
119980 McDonnell & Miller FS7-4LJ Flow Switch 1-1 4 BSTP
McDonnell & Miller
$484.95119980 McDonnell & Miller FS7-4LJ Flow Switch 1-1 4 BSTP. *Please note image is generic. McDonnell & Miller FS7 Overview McDonnell & Miller FS7 Instruction Manual Features: Universal design serves the widest variety of large pipe...$484.95 -
115650 McDonnell & Miller FS6-J-1 Flow Switch 1 BSTP
McDonnell & Miller
$424.95115650 McDonnell & Miller FS6-J-1 Flow Switch 1 BSTP. *Please note image is generic. McDonnell & Miller FS6 Instruction Manual Features: In-line configuration eliminates need for a pipe tee Very high flow capacity Actuates at extremely...$424.95 -
115550 McDonnell & Miller FS6-J-3 4 Flow Switch 3 4 BSTP
McDonnell & Miller
$424.95115550 McDonnell & Miller FS6-J-3 4 Flow Switch 3 4 BSTP. *Please note image is generic. McDonnell & Miller FS6 Instruction Manual This McDonnell & Miller flow switch is for heavy duty applications where high sensitivity is required,...$424.95