McMaster-Carr logo
    Filter by
    Fitting Connection
    Industrial Info Compare
    System of Measurement
    Body Material
    Pipe Size
    Industrial Info Compare
    Connects To
    Indicator Type
    Mounting Position
    Window Material
    Thread Type
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    14 Products

    Flow Sights with Barbed Fittings for Water, Oil, Air, and Inert Gas

    Image of Product. Front orientation. Flow Sights. Flow Sights with Barbed Fittings for Water, Oil, Air, and Inert Gas, Ball Indicator.
    Image of Product. Front orientation. Flow Sights. Flow Sights with Barbed Fittings for Water, Oil, Air, and Inert Gas, Rotor Indicator.

    Ball Indicator

    Rotor Indicator

    Monitor liquid movement, color, and clarity in tube systems—these sights have barbed fittings that slide into soft plastic and rubber tubing. They have a clear body and an indicator that moves when flow is present, so you can visually confirm flow from a distance.
    Indicator
    For Tube ID
    Temp. Range,
    ° F
    End-to-End
    Lg.
    Ht.
    Max. Pressure
    @ Temp.
    Direction of Flow
    Material
    Color
    For Use With
    Each
    Ball Indicator
     
    Polycarbonate Body
    1/4" to 3/8"32 to 1803"2 1/4"10 psi @ 70° FBottom to Top, Left to Right, Right to Left, Top to BottomNylon
    WhiteWater, Oil, Air, Inert Gas4218K61000000
     
    Rotor Indicator
     
    PMP Body
    1/4" to 7/16"32 to 1403 1/2"1 9/16"20 psi @ 70° FBottom to Top, Left to Right, Right to Left, Top to BottomPolypropylene
    BlueWater, Mineral Oil, Air, Inert Gas4218K6300000
     
    Polystyrene Body
    3/16" to 1/4"0 to 1902"1"10 psi @ 70° FBottom to Top, Left to Right, Right to Left, Top to BottomPolystyreneBlueWater, Oil, Air, Inert Gas4218K6200000
     

    Sights for Quick-Clamp Sanitary Tube Fittings

    Image of System. Sight Shown Assembled With Gasket, Quick-Clamp Fitting, And Tube Fitting (All Sold Separately). Front orientation. Sights. Sights for Quick-Clamp Sanitary Tube Fittings.

    Sight Shown Assembled

    With Gasket, Quick-Clamp

    Fitting, And Tube

    Fitting (All Sold

    Separately)

    Monitor food, brewery, chemical, pharmaceutical, and biotech processing lines with these sights that attach to quick-clamp fittings for fast installation and easy removal for cleaning. All have a one-piece design, so there are no crevices where bacteria can grow. A quick-clamp fitting, gasket, and tube fitting are required (sold separately).
    2205 Stainless Steel with Glass Window
    Image of Product. Front orientation. Sights. Sights for Quick-Clamp Sanitary Tube Fittings, 2205 Stainless Steel with Glass Window.
    For superior strength and reliability, choose 2205 stainless steel sights. All have a glass window that’s melted around a high-strength ring, so they won’t shatter, leak, or lose their shape under high pressure, heat, chemicals, or impact. They withstand harsh cleaners and sanitizers for clean-in-place (CIP) and steam-in-place (SIP) applications. USP Class VI and TUV Rheinland Certified, these sights meet safety standards in the U.S. and Europe. They also meet DIN standards for glass materials used in sights, ASTM standards for materials used in boilers and pressure vessels, and ASME BPE design standards for bioprocessing equipment that ensure purity and safety.
    For Tube
    OD
    For Flange
    OD
    Window
    Dia.
    Max. Pressure
    @ Temp.
    Temp. Range,
    ° F
    For Use With
    Specs. Met
    Certification
    USP
    Class
    Each
     
    With One-Piece Construction
    1", 1 1/2"1.98"1"230 psi @ 70° F-40 to 500Water, Hydraulic Fluid, Diesel Fuel, Acetic Acid (White Vinegar), Air, Alcohol-Based Solvents, Beverage, Chemicals, Compressed Air, Food, Fuel Oil, Gasoline, Inert Gas, Ketone, Oil, Salt Water, SteamASME BPE, ASTM A479, DIN 7079, DIN 7080TUV Rheinland Certified
    VI5070N150000000
    2"2.52"1 3/16"230 psi @ 70° F-40 to 500Water, Hydraulic Fluid, Diesel Fuel, Acetic Acid (White Vinegar), Air, Alcohol-Based Solvents, Beverage, Chemicals, Compressed Air, Food, Fuel Oil, Gasoline, Inert Gas, Ketone, Oil, Salt Water, SteamASME BPE, ASTM A479, DIN 7079, DIN 7080TUV Rheinland Certified
    VI5070N16000000
    3"3.58"1 1/2"150 psi @ 70° F-40 to 500Water, Hydraulic Fluid, Diesel Fuel, Acetic Acid (White Vinegar), Air, Alcohol-Based Solvents, Beverage, Chemicals, Compressed Air, Food, Fuel Oil, Gasoline, Inert Gas, Ketone, Oil, Salt Water, SteamASME BPE, ASTM A479, DIN 7079, DIN 7080TUV Rheinland Certified
    VI5070N17000000
    4"4.68"2 3/16"150 psi @ 70° F-40 to 500Water, Hydraulic Fluid, Diesel Fuel, Acetic Acid (White Vinegar), Air, Alcohol-Based Solvents, Beverage, Chemicals, Compressed Air, Food, Fuel Oil, Gasoline, Inert Gas, Ketone, Oil, Salt Water, SteamASME BPE, ASTM A479, DIN 7079, DIN 7080TUV Rheinland Certified
    VI5070N18000000
     

    Panel-Mount Flow Sights for Water, Oil, and Inert Gas

    Image of Product. Front orientation. Flow Sights. Panel-Mount Flow Sights for Water, Oil, and Inert Gas.
    The included mounting ring lets you install these sights in instrument panels. They have three ball indicators that bounce in the domed-top window to show flow in your line.
    Flow Sights
    Repair Kits
    Window
    Indicator
    Pipe
    Size
    Thread
    Type
    Gender
    Temp. Range,
    ° F
    Dia.
    Type
    End-to-End
    Lg.
    Ht.
    Max. Pressure
    @ Temp.
    Panel Cutout
    Dia.
    Direction of Flow
    No.
    of
    Material
    For Use With
    Each
    Each
    Ball Indicator
     
    Brass Body
    1/4
    NPT
    Female35 to 1201 5/8"Domed Top3 1/8"2 1/8"150 psi @ 70° F2 3/8"Bottom to Top, Left to Right, Right to Left, Top to Bottom3White Polyethylene
    White Polyethylene
    Green Acrylic Plastic
    Water, Oil, Inert Gas4202K1200000004202K216000000
    3/8
    NPT
    Female35 to 1201 5/8"Domed Top3 1/8"2 1/8"150 psi @ 70° F2 3/8"Bottom to Top, Left to Right, Right to Left, Top to Bottom3White Polyethylene
    White Polyethylene
    Green Acrylic Plastic
    Water, Oil, Inert Gas4202K140000004202K21600000
    1/2
    NPT
    Female35 to 1201 5/8"Domed Top3 1/8"2 1/8"150 psi @ 70° F2 3/8"Bottom to Top, Left to Right, Right to Left, Top to Bottom3White Polyethylene
    White Polyethylene
    Green Acrylic Plastic
    Water, Oil, Inert Gas4202K160000004202K21600000
    3/4
    NPT
    Female35 to 1201 5/8"Domed Top3 1/8"2 1/8"150 psi @ 70° F2 3/8"Bottom to Top, Left to Right, Right to Left, Top to Bottom3White Polyethylene
    White Polyethylene
    Green Acrylic Plastic
    Water, Oil, Inert Gas4202K180000004202K55200000
    1
    NPT
    Female35 to 1201 5/8"Domed Top3 1/8"2 5/8"150 psi @ 70° F2 3/8"Bottom to Top, Left to Right, Right to Left, Top to Bottom3White Polyethylene
    White Polyethylene
    Green Acrylic Plastic
    Water, Oil, Inert Gas4202K190000004202K55200000
     
    back to top