TFCampbell Company, Inc.                    
 

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Welcome to the easiest way to locate your new or replacement McDonnell & Miller Boiler Controls, Liquid Level Controls & Flow Switches.  Locate the parts that you need and call 800-837-8006 - They are in stock at our warehouse, ready to ship today!

BOILER CONTROLS

Low Water Cut-Offs
  • For Hot Water Boilers

  Electronic
  750
  750B
  PS-850
  RB-24
  RB-120
  RB-122-E

  Float Type
  63
  64
  764
  767
  • For Steam Boilers
  Electronic
  150E/157E
  750
  PS-800
  750B

  Float Type
  61
  63
  64
  67
  69
  150S
  157S
  • Combination Low Water Cut-Off/Pump Controllers for Steam Boilers
  42S
  93
  94
  150S
  157S
  193
  194
Water Feeders
  • Electric
  Series WF Uni-Match
  101-A
  • Mechanical Combination Mechanical/Low Water Cut-Offs
  47/47-2
  51/51-2
  51-S/51-S-2
  53/53-2
  247/247-2
  • Make-Up
  21
  25-A
  221
  551-S
  847
  851
  851-S
LIQUID LEVEL CONTROLS
Valves
  • Blow Down
  14-B
  • Test-N-Check
  TC-4
  • Pressure Relief
  250
  260
Conductance Actuated (Probe Type)
  • General Purpose Sensors and Controls
  750B
  RS Sensors
  750B-C3
  AS Probes
Float Actuated Pneumatic
  PFC
Float Actuated Valves
  27-W
  3155
FLOW SWITCHES
Liquid Flow
  • General Purpose
  FS4-3
  FS4-3T
  FS5
  FS8-W
  • High Sensitivity
  FS1
  FS1-W
  FS6
  FS6-W
  • Industrial
  FS7-4
  FS7-4E
  FS7-4W
Air Flow
  AF1
  AFE-1
  AF2
  AF3
Flow Switch Time Delay Relays
  T5R
  T20