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    27 Products

    Fixed-Set-Point Flow Switches

    Image of Product. Style A. Front orientation. Flow Switches. Fixed-Set-Point Flow Switches, Straight, Style A.
    Image of Product. Style B. Front orientation. Flow Switches. Fixed-Set-Point Flow Switches, Straight, Style B.

    Style A

    Style B

    Image of Product. Style D. Front orientation. Contains Annotated. Flow Switches. Fixed-Set-Point Flow Switches, 90° Elbow, Style D.
    Image of Product. Style E. Front orientation. Contains Annotated. Flow Switches. Fixed-Set-Point Flow Switches, 90° Elbow, Style E.

    Style D

    Style E

    Since they come factory set to a specific set point, these switches are easier to install than adjustable flow switches. As flowing liquid pushes an internal piston, the switch reads the position of the piston to measure the flow. When the piston passes the set point, the switch actuates. They’re accurate in any mounting position.
    These switches are calibrated with and measure water accurately. They can also be used with other liquids by applying your liquid’s specific-gravity conversion factor to calculate the new set point.
    Choose a fitting material that is compatible with the liquid you intend to run through your line.
    Straight
    Image of Product. Style A. Front orientation. Flow Switches. Fixed-Set-Point Flow Switches, Straight, Style A.
    Image of Product. Style B. Front orientation. Flow Switches. Fixed-Set-Point Flow Switches, Straight, Style B.

    Style A

    Style B

    Polypropylene Fitting—Polypropylene and PPS fittings work with a wide range of chemicals. However, they can crack from impact or when overtightened.
    SPST—SPST (single pole, single throw) switches turn one device from off to on (normally open).
    Style
    Pipe
    Size
    Thread
    Type
    Gender
    Set Point,
    gpm
    Approx. Difference Between Set
    Point and Reset Point, gpm
    Max. Pressure
    @ Temp.
    Temp. Range,
    ° F
    Max. Switching Current @ Voltage
    End-to-End
    Lg.
    Mounting
    Position
    Each
    Polypropylene Body with Polypropylene Fittings
     
    SPST
    A1/4
    NPT
    Female0.10.1200 psi @ 70° F33 to 194500 mA @ 300V AC
    700 mA @ 350V DC
    4 7/8"Any Angle2371K41000000
    A1/4
    NPT
    Female0.250.25200 psi @ 70° F33 to 194500 mA @ 300V AC
    700 mA @ 350V DC
    4 7/8"Any Angle2371K4200000
    A1/4
    NPT
    Female0.50.5200 psi @ 70° F33 to 194500 mA @ 300V AC
    700 mA @ 350V DC
    4 7/8"Any Angle2371K4300000
    A1/4
    NPT
    Female0.750.75200 psi @ 70° F33 to 194500 mA @ 300V AC
    700 mA @ 350V DC
    4 7/8"Any Angle2371K4400000
    A1/4
    NPT
    Female11200 psi @ 70° F33 to 194500 mA @ 300V AC
    700 mA @ 350V DC
    4 7/8"Any Angle2371K4500000
    B3/8
    NPT
    Male0.250.05125 psi @ 70° F33 to 212400 mA @ 30V AC
    170 mA @ 120V AC
    80 mA @ 240V AC
    300 mA @ 30V DC
    130 mA @ 120V DC
    60 mA @ 240V DC
    4"Any Angle42015K2100000
    B3/8
    NPT
    Male0.50.1125 psi @ 70° F33 to 212400 mA @ 30V AC
    170 mA @ 120V AC
    80 mA @ 240V AC
    300 mA @ 30V DC
    130 mA @ 120V DC
    60 mA @ 240V DC
    4"Any Angle42015K2200000
    B3/8
    NPT
    Male10.2125 psi @ 70° F33 to 212400 mA @ 30V AC
    170 mA @ 120V AC
    80 mA @ 240V AC
    300 mA @ 30V DC
    130 mA @ 120V DC
    60 mA @ 240V DC
    4"Any Angle42015K2300000
    B3/8
    NPT
    Male1.50.3125 psi @ 70° F33 to 212400 mA @ 30V AC
    170 mA @ 120V AC
    80 mA @ 240V AC
    300 mA @ 30V DC
    130 mA @ 120V DC
    60 mA @ 240V DC
    4"Any Angle42015K2400000
    B3/8
    NPT
    Male20.4125 psi @ 70° F33 to 212400 mA @ 30V AC
    170 mA @ 120V AC
    80 mA @ 240V AC
    300 mA @ 30V DC
    130 mA @ 120V DC
    60 mA @ 240V DC
    4"Any Angle42015K2500000
     
    90° Elbow
    Image of Product. Style D. Front orientation. Contains Annotated. Flow Switches. Fixed-Set-Point Flow Switches, 90° Elbow, Style D.
    Image of Product. Style E. Front orientation. Contains Annotated. Flow Switches. Fixed-Set-Point Flow Switches, 90° Elbow, Style E.

    Style D

    Style E

    Polypropylene Fitting—Polypropylene and PPS fittings work with a wide range of chemicals. However, they can crack from impact or when overtightened.
    SPST—SPST (single pole, single throw) switches turn one device from off to on (normally open).
    Style
    Pipe
    Size
    Thread
    Type
    Gender
    Set Point,
    gpm
    Approx. Difference Between Set
    Point and Reset Point, gpm
    Max. Pressure
    @ Temp.
    Temp. Range,
    ° F
    Max. Switching Current @ Voltage
    Mounting
    Position
    Each
    Polypropylene Body with Polypropylene Fittings
     
    SPST
    D1/4
    NPT
    Female0.0420.006200 psi @ 70° F33 to 194500 mA @ 300V AC
    700 mA @ 350V DC
    Any Angle4553N15000000
    D1/4
    NPT
    Female0.10.1200 psi @ 70° F33 to 194500 mA @ 300V AC
    700 mA @ 350V DC
    Any Angle2371K2100000
    D1/4
    NPT
    Female0.250.25200 psi @ 70° F33 to 194500 mA @ 300V AC
    700 mA @ 350V DC
    Any Angle2371K2200000
    D1/4
    NPT
    Female0.50.5200 psi @ 70° F33 to 194500 mA @ 300V AC
    700 mA @ 350V DC
    Any Angle2371K2300000
    D1/4
    NPT
    Female0.750.75200 psi @ 70° F33 to 194500 mA @ 300V AC
    700 mA @ 350V DC
    Any Angle2371K2400000
    D1/4
    NPT
    Female11200 psi @ 70° F33 to 194500 mA @ 300V AC
    700 mA @ 350V DC
    Any Angle2371K2500000
    E3/4
    NPT
    Female0.250.05100 psi @ 70° F0 to 212400 mA @ 30V AC
    170 mA @ 120V AC
    80 mA @ 240V AC
    300 mA @ 30V DC
    130 mA @ 120V DC
    60 mA @ 240V DC
    Any Angle4553N13000000
    E3/4
    NPT
    Female0.50.1100 psi @ 70° F0 to 212400 mA @ 30V AC
    170 mA @ 120V AC
    80 mA @ 240V AC
    300 mA @ 30V DC
    130 mA @ 120V DC
    60 mA @ 240V DC
    Any Angle42015K6000000
    E3/4
    NPT
    Female10.2100 psi @ 70° F0 to 212400 mA @ 30V AC
    170 mA @ 120V AC
    80 mA @ 240V AC
    300 mA @ 30V DC
    130 mA @ 120V DC
    60 mA @ 240V DC
    Any Angle4553N14000000
     

    Flow Switches with Sight

    Image of Product. Front orientation. Flow Switches with Sight.
    For monitoring flow at a glance, these switches have a plastic window with a rotor indicator that spins when there’s flow. They activate or deactivate equipment when the flow rate reaches your set point. Tighten or loosen the adjustment screw to choose your set point anywhere within the range. To measure flow, they count how many times the turbine turns as liquid flows through. Use them only with clean, low-viscosity liquids to prevent clogging the turbine and other damage. All are single pole, double throw (SPDT) and can either turn one device from off to on (normally open) or on to off (normally closed).
    These switches are calibrated with water. They can also be used with other liquids but may not measure accurately if their viscosity is significantly different.
    Choose a fitting material that is compatible with the liquid you're running through your line.
    Polypropylene Fitting—Polypropylene fittings work with a wide range of chemicals. However, they can crack from impact or when overtightened.
    Any-Angle Mount—Flow switches with any-angle mounting position will measure accurately no matter how you orient them in your system.
    Flow Set Point,
    gpm
    Max. Pressure
    @ Temp.
    Temp. Range,
    ° F
    Max. Switching Current
    @ Voltage
    Mounting
    Position
    End-to-End
    Lg.
    Certification
    Each
    Polypropylene Body with Polypropylene Fittings
     
    1/4 NPT Female
    0.1 to 5100 psi @ 70° F33 to 18095 mA @ 115V ACAny Angle3 1/16"CE Marked
    UL Recognized Component
    4138K110000000
     
    1/2 NPT Female
    0.25 to 2.5150 psi @ 70° F20 to 1505 amp @ 120V AC
    5 amp @ 240V AC
    Horizontal3 3/4"CE Marked
    VDE Certified
    4138K101000000
    0.5 to 5150 psi @ 70° F20 to 1505 amp @ 120V AC
    5 amp @ 240V AC
    Horizontal3 3/4"CE Marked
    VDE Certified
    4138K102000000
    1 to 10150 psi @ 70° F20 to 1505 amp @ 120V AC
    5 amp @ 240V AC
    Horizontal3 3/4"CE Marked
    VDE Certified
    4138K103000000
    1.5 to 15150 psi @ 70° F20 to 1505 amp @ 120V AC
    5 amp @ 240V AC
    Horizontal3 3/4"CE Marked
    VDE Certified
    4138K104000000
    1.5 to 20100 psi @ 70° F33 to 18095 mA @ 115V ACAny Angle3 1/16"CE Marked
    UL Recognized Component
    4138K12000000
     

    Flow Transmitters with Sight

    Image of Product. Front orientation. Flow Transmitters. Flow Transmitters with Sight.
    Send flow rate data using these transmitters while also being able to visually confirm liquid is flowing. They measure flow by counting how many times the turbine turns as the liquid moves through it. To prevent clogging the turbine and other damage, use them only with clean, low-viscosity liquids. These transmitters, also known as transducers, convert the flow measurement to an electrical signal that can be interpreted by receiving devices, such as remote displays and programmable logic controllers (PLCs), to monitor flow or control equipment. Mount them directly inline with your system. They measure accurately in any mounting orientation.
    These transmitters are calibrated with water. You can use them with other liquids, but they may not measure accurately if the liquid’s viscosity differs from water.
    Digital Pulse Output—Transmitters with a digital pulse output send flow data using spikes of voltage that match the input voltage of the transmitter. The higher the flow, the more pulses they send.
    Flow Measurement
    Type
    Pipe
    Connections
    Flow Range,
    gpm
    End-to-End
    Lg.
    Accuracy
    Max. Pressure
    @ Temp.
    Temp. Range,
    ° F
    Seal Material
    Input Voltage
    Range, V DC
    Mounting
    Position
    Field
    Recalibratable
    Pulse Freq.,
    Hz
    Each
    One Digital Pulse Output—Wire Lead Connection
     
    Polypropylene Body with Polypropylene Fitting
    Turbine1/4 NPT Female0.1 to 53 1/16"±7%100 psi @ 70° F33 to 180Fluoroelastomer
    4.25 to 24Any AngleNo15 to 2259687K110000000
    Turbine1/2 NPT Female1.5 to 203 1/16"±15%100 psi @ 70° F33 to 180Fluoroelastomer
    4.25 to 24Any AngleNo15 to 2259687K12000000
     
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