Category Products

  • SKU: MH1022
  • 3 in stock
  • Ships within 4 business days

McDonnell & Miller model number 42S is a combination float-operated low water cut-off and pump controller for steam boilers that have a separate water column. This control features an automatic reset and two 120 volt, bi-metal, two-wire, single pole, single throw snap switches. Its maximum pressure is 50 psi and it has a tapped 1" FIP connection.

Online Price: $602.34
Regular Price: $652.54

  • SKU: MH1023
  • 2 in stock
  • Ships within 4 business days

McDonnell & Miller model number 42S-A is a combination float-operated low water cut-off and pump controller with quick hook-up fittings for steam boilers. This control features an automatic reset and two 120 volt, bi-metal, two-wire, single pole, single throw snap switches. Its maximum pressure is 50 psi and it has a tapped 1" FIP connection.

Online Price: $832.53
Regular Price: $901.90

  • SKU: MH1023A
  • Ships within 4 business days

McDonnell & Miller model number 42S-N is a combination float-operated low water cut-off and pump controller with 1/2" IP gauge glass connections for steam boilers. This control features an automatic reset and two 120 volt, bi-metal, two-wire, single pole, single throw snap switches. Its maximum pressure is 50 psi and it has a tapped 1" FIP connection.

Online Price: $698.25
Regular Price: $756.44

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