Flow Switches

  • FS251, General Purpose Flow Switch w/ NEMA 1 Encl.
    SKU: 120611
    Brand: Mcdonnell & Miller
    (11)
    $97.95 each
    $284.85 box of 3
    $94.95 each
    327
    Mon, Feb 4
    327
    QtyArrives
    327 Mon, Feb 4
    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
    319
    Mon, Feb 4
    319
    QtyArrives
    319 Mon, Feb 4
    Questions? Call 1-888-757-4774
  • $168.95 each
    $488.85 box of 3
    $162.95 each
    199
    Mon, Feb 4
    199
    QtyArrives
    199 Mon, Feb 4
    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
    134
    Mon, Feb 4
    134
    QtyArrives
    134 Mon, Feb 4
    Questions? Call 1-888-757-4774
  • $131.95 each
    $380.85 box of 3
    $126.95 each
    24
    Mon, Feb 4
    24
    QtyArrives
    24 Mon, Feb 4
    Questions? Call 1-888-757-4774
  • 1" NPT Flow Switch (SS Paddles)
    SKU: F261MAH-V01C
    Brand: Johnson Controls
    (2)
    $149.95 each
    $431.85 box of 3
    $143.95 each
    54
    Mon, Feb 4
    54
    QtyArrives
    54 Mon, Feb 4
    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
    48
    Mon, Feb 4
    48
    QtyArrives
    48 Mon, Feb 4
    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
    46
    Mon, Feb 4
    46
    QtyArrives
    46 Mon, Feb 4
    Questions? Call 1-888-757-4774
  • OEM Pressure Sensing Switch (.25/1.0" W.C.)
    SKU: RSS-495-011
    Brand: Cleveland Controls
    (3)
    $24.95 each
    Mon, Feb 18 – Mon, Feb 25
    Arrives
    Mon, Feb 18 – Mon, Feb 25
    Questions? Call 1-888-757-4774 or LiveChat Img Live Chat
  • 2-1/2" NPT Liquid Level Float Switch
    SKU: 9037HG33
    Brand: Square D
    (1)
    $97.95 each
    11
    Mon, Feb 4
    11
    QtyArrives
    11 Mon, Feb 4
    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
    42
    Mon, Feb 4
    42
    QtyArrives
    42 Mon, Feb 4
    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
    54
    Mon, Feb 4
    54
    QtyArrives
    54 Mon, Feb 4
    Questions? Call 1-888-757-4774
  • Alternator Liquid Level Switch (NEMA 1)
    SKU: 9038CG36
    Brand: Square D
    $273.95 each
    13
    Mon, Feb 4
    13
    QtyArrives
    13 Mon, Feb 4
    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
    34
    Mon, Feb 4
    34
    QtyArrives
    34 Mon, Feb 4
    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
    33
    Mon, Feb 4
    33
    QtyArrives
    33 Mon, Feb 4
    Questions? Call 1-888-757-4774
  • FS4-15SS, Stainless Steel Paddle Kit w/ 1", 2" 3", & 6" Paddle
    SKU: 310451
    Brand: Mcdonnell & Miller
    (1)
    $16.25 each
    $77.75 box of 5
    $15.55 each
    60
    Mon, Feb 4
    60
    QtyArrives
    60 Mon, Feb 4
    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
    9
    Mon, Feb 4
    9
    QtyArrives
    9 Mon, Feb 4
    Questions? Call 1-888-757-4774
  • $33.95 each
    8
    Mon, Feb 4
    8
    QtyArrives
    8 Mon, Feb 4
    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
    35
    Mon, Feb 4
    35
    QtyArrives
    35 Mon, Feb 4
    Questions? Call 1-888-757-4774
  • FS5-1, 1" Flow Switch
    SKU: 114780
    Brand: Mcdonnell & Miller
    (5)
    $192.95 each
    $557.85 box of 3
    $185.95 each
    25
    Mon, Feb 4
    25
    QtyArrives
    25 Mon, Feb 4
    Questions? Call 1-888-757-4774
  • 3/4" NPT Flow Switch Low Flow
    SKU: F261KFH-V01C
    Brand: Johnson Controls
    (6)
    $117.95 each
    $341.85 box of 3
    $113.95 each
    6
    Mon, Feb 4
    6
    QtyArrives
    6 Mon, Feb 4
    Questions? Call 1-888-757-4774
  • $34.15 each
    18
    Mon, Feb 4
    18
    QtyArrives
    18 Mon, Feb 4
    Questions? Call 1-888-757-4774
  • $251.95 each
    Wed, Feb 13 – Mon, Feb 18
    Arrives
    Wed, Feb 13 – Mon, Feb 18
    Questions? Call 1-888-757-4774 or LiveChat Img Live Chat
  • SPDT General Purpose Air Sensing Switch (.05" to 12.0" W.C.)
    SKU: AFS-222-121
    Brand: Cleveland Controls
    (1)
    $29.95 each
    69
    Mon, Feb 4
    69
    QtyArrives
    69 Mon, Feb 4
    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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