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Flow Switches

  • FS251, General Purpose Flow Switch w/ NEMA 1 Encl.
    SKU: 120611
    Brand: Mcdonnell & Miller
    (12)
    $97.95 each
    $284.85 box of 3
    $94.95 each
    190
    Wed, Jul 10
    190
    QtyArrives
    190 Wed, Jul 10
    Questions? Call 1-888-757-4774
  • FS4-3, 1" General Purpose Flow Switch - Paddle Style
    SKU: 114400
    Brand: Mcdonnell & Miller
    (4)
    $115.95 each
    $335.85 box of 3
    $111.95 each
    784
    Wed, Jul 10
    784
    QtyArrives
    784 Wed, Jul 10
    Questions? Call 1-888-757-4774
  • $168.95 each
    $488.85 box of 3
    $162.95 each
    132
    Wed, Jul 10
    132
    QtyArrives
    132 Wed, Jul 10
    Questions? Call 1-888-757-4774
  • 1" Liquid Flow Switch (Set of 4 Paddles)
    SKU: F261KAH-V01C
    Brand: Johnson Controls
    $105.95 each
    $299.85 box of 3
    $99.95 each
    218
    Wed, Jul 10
    218
    QtyArrives
    218 Wed, Jul 10
    Questions? Call 1-888-757-4774
  • $131.95 each
    $380.85 box of 3
    $126.95 each
    20
    Wed, Jul 10
    53
    QtyArrives
    20 Wed, Jul 10
    33 Thu, Jul 11 – Fri, Jul 12
    Questions? Call 1-888-757-4774
  • 1" NPT Flow Switch (SS Paddles)
    SKU: F261MAH-V01C
    Brand: Johnson Controls
    (3)
    $149.95 each
    $431.85 box of 3
    $143.95 each
    92
    Wed, Jul 10
    92
    QtyArrives
    92 Wed, Jul 10
    Questions? Call 1-888-757-4774
  • SPDT Adj. Differential Air Pressure Switch (.05"-12.0" W.C.)
    SKU: AFS-222-112
    Brand: Cleveland Controls
    (4)
    $28.95 each
    42
    Wed, Jul 10
    42
    QtyArrives
    42 Wed, Jul 10
    Questions? Call 1-888-757-4774
  • Air Flow Pressure Sensing Switch (.1/10"W.C.)
    SKU: NS2-0000-00
    Brand: Cleveland Controls
    (1)
    $21.15 each
    70
    Wed, Jul 10
    70
    QtyArrives
    70 Wed, Jul 10
    Questions? Call 1-888-757-4774
  • OEM Pressure Sensing Switch (.25/1.0" W.C.)
    SKU: RSS-495-011
    Brand: Cleveland Controls
    (4)
    $24.95 each
    54
    Wed, Jul 10
    54
    QtyArrives
    54 Wed, Jul 10
    Questions? Call 1-888-757-4774
  • 2-1/2" NPT Liquid Level Float Switch
    SKU: 9037HG33
    Brand: Square D
    (2)
    $97.99 each
    45
    Wed, Jul 10
    45
    QtyArrives
    45 Wed, Jul 10
    Questions? Call 1-888-757-4774
  • FS1, 1/2" Flow Switch
    SKU: 113200
    Brand: Mcdonnell & Miller
    (3)
    $179.95 each
    $518.85 box of 3
    $172.95 each
    72
    Wed, Jul 10
    72
    QtyArrives
    72 Wed, Jul 10
    Questions? Call 1-888-757-4774
  • Pressure Switch .05" WC
    SKU: DFS-221-347
    Brand: Cleveland Controls
    (1)
    $33.95 each
    16
    Wed, Jul 10
    16
    QtyArrives
    16 Wed, Jul 10
    Questions? Call 1-888-757-4774
  • $55.95 each
    583
    Wed, Jul 10
    583
    QtyArrives
    583 Wed, Jul 10
    Questions? Call 1-888-757-4774
  • SPDT Adj. Differential Air Pressure Switch (.05"-12.0" W.C.)
    SKU: AFS-145
    Brand: Cleveland Controls
    (1)
    $28.75 each
    48
    Wed, Jul 10
    48
    QtyArrives
    48 Wed, Jul 10
    Questions? Call 1-888-757-4774
  • SPDT Air Pressure Sensing Switch (.05" - 12.0" W.C.)
    SKU: AFS-A
    Brand: Cleveland Controls
    $31.95 each
    35
    Wed, Jul 10
    35
    QtyArrives
    35 Wed, Jul 10
    Questions? Call 1-888-757-4774
  • JD-2 Air Pressure Switch, .07 to 1.7" W.C. (Blue)
    SKU: JD-2-BLUE
    Brand: Antunes
    (1)
    $62.95 each
    663
    Wed, Jul 10
    663
    QtyArrives
    663 Wed, Jul 10
    Questions? Call 1-888-757-4774
  • Alternator Liquid Level Switch (NEMA 1)
    SKU: 9038CG36
    Brand: Square D
    $273.99 each
    34
    Wed, Jul 10
    34
    QtyArrives
    34 Wed, Jul 10
    Questions? Call 1-888-757-4774
  • FS5-3/4, 3/4" Flow Switch
    SKU: 114760
    Brand: Mcdonnell & Miller
    (2)
    $192.95 each
    $557.85 box of 3
    $185.95 each
    44
    Wed, Jul 10
    44
    QtyArrives
    44 Wed, Jul 10
    Questions? Call 1-888-757-4774
  • $33.99 each
    37
    Wed, Jul 10
    37
    QtyArrives
    37 Wed, Jul 10
    Questions? Call 1-888-757-4774
  • SPDT Air Pressure Switch Barbed Connector (.05" W.C.)
    SKU: DFS-221-112
    Brand: Cleveland Controls
    $22.95 each
    42
    Wed, Jul 10
    42
    QtyArrives
    42 Wed, Jul 10
    Questions? Call 1-888-757-4774
  • FS-200-W NEMA-1 Paddle-Type Flow Switch
    SKU: 00063067
    Brand: Watts
    $191.95 each
    $367.90 box of 2
    $183.95 each
    30
    Wed, Jul 10
    30
    QtyArrives
    30 Wed, Jul 10
    Questions? Call 1-888-757-4774
  • $166.95 each
    12
    Wed, Jul 10
    18
    QtyArrives
    12 Wed, Jul 10
    6 Thu, Jul 11 – Fri, Jul 12
    Questions? Call 1-888-757-4774
  • SPDT General Purpose Air Sensing Switch (.05" to 12.0" W.C.)
    SKU: AFS-222-121
    Brand: Cleveland Controls
    (1)
    $29.95 each
    87
    Wed, Jul 10
    87
    QtyArrives
    87 Wed, Jul 10
    Questions? Call 1-888-757-4774
  • $34.19 each
    23
    Wed, Jul 10
    23
    QtyArrives
    23 Wed, Jul 10
    Questions? Call 1-888-757-4774

Resources

Articles

  • A flow switch is an instrument that monitors the flow of steam, air, or liquid. The flow switch sends a signal to a device, such as a pump, to turn on or shut off. Flow switches can be used for air conditioning, heating and hydronic systems, among other applications.

    Air flow switches are used in applications that require low to high velocity, providing an economical way to detect change or loss of air flow velocity. This change or loss may be caused by a closed damper or fan inlet, loose fan wheel, slipped or broken fan belt, dirty or clogged filter, or an overload on a fan motor switch.

    Liquid flow switches have a universal design and serve a wider range of applications, such as starting or stopping electrically operated equipment like signal lights, alarms, motors, and automatic burners. In addition, liquid flow switches are used for general purpose applications with environmental exposure or applications requiring a water-tight or dust-tight flow switch. The liquid-flow F61 Series flow switch, manufactured by Johnson Controls, responds to fluid flow in lines carrying water, ethylene glycol, or other nonhazardous fluids. It also responds to low fluid flow rates in applications with pipe sizes under 1" trade size.

    Our website offers a vast selection of McDonnell & Miller Johnson Controls, Watts. and Taco flow switches that suit a wide range of residential, commercial, and industrial applications.
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