McMaster-Carr logo
    Filter by
    System of Measurement
    Fitting Connection
    Industrial Info Compare
    For Inlet Tube OD
    For Outlet Tube OD
    Connects To
    Minimum Opening Pressure
    Actuation
    Fitting Type
    Inlet Connection
    Valve Type
    Connection Port
    Outlet Connection
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    DFARS Specialty Metals
    Gender
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    15 Products

    Check Valves with Push-to-Connect Fittings

    Insert tubing into the push-to-connect fittings—no heat, solder, or flux required. These valves open to allow flow in one direction and close when flow stops or reverses.
    Nickel-Plated Brass Body—Push-to-Connect Female Inlet × Push-to-Connect Female Outlet Straight
    Image of Product. Push-to-Connect Female Inlet x Push-to-Connect Female Outlet Straight. Front orientation. Contains Annotated. Straight. Check Valves with Push-to-Connect Fittings, Nickel-Plated Brass Body, Female.

    Push-to-Connect Female

    Inlet x Push-to-Connect

    Female Outlet Straight

    Flow Coefficient (Cv)—Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
    For Tube
    OD, mm
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    End-to-End
    Lg.
    For Use With
    Piston
    Material
    Spring Material
    Seal
    Material
    Each
    4Not Rated115 psi @ 70° F30 to 1751 3/4"Air, Helium, Krypton, Neon, Nitrogen, Oil, Water, XenonBrass302 Stainless Steel
    Buna-N
    1866T111000000
    6Not Rated115 psi @ 70° F30 to 1752 1/16"Air, Helium, Krypton, Neon, Nitrogen, Oil, Water, XenonBrass302 Stainless Steel
    Buna-N
    1866T11200000
    8Not Rated115 psi @ 70° F30 to 1752 1/4"Air, Helium, Krypton, Neon, Nitrogen, Oil, Water, XenonBrass302 Stainless Steel
    Buna-N
    1866T11300000

    Air Flow Check Valves

    Valves open to allow flow in one direction and close when flow stops or reverses.
    Push-to-Connect Female Inlet × Push-to-Connect Female Outlet
    Image of Product. Front orientation. Contains Annotated. Air Flow Check Valves. Air Flow Check Valves, Push-to-Connect Female Inlet × Push-to-Connect Female Outlet.
    Valves with push-to-connect ports are for use with plastic or soft metal tubing. Insert tubing into the port.
    Flow Coefficient (Cv)—Flow coefficient (Cv) is a measurement that indicates how much airflow can pass through a valve.
    Overall,
    mm
    For Inlet
    Tube OD, mm
    For Outlet
    Tube OD, mm
    Flow Coefficient
    (Cv)
    Min. Flow
    Rate
    Max. Flow
    Rate
    Max. Pressure,
    psi
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    Lg.
    Dia.
    Color
    Each
    Nylon Body
    440.14Not RatedNot Rated145732 to 15838.115.9Black1096T5000000
    660.16Not RatedNot Rated145732 to 15841.315.9Black1096T600000
    880.93Not RatedNot Rated145732 to 1585119Black1096T700000
    1010Not RatedNot RatedNot Rated145732 to 15863.523.8Black1096T800000
    1212Not RatedNot RatedNot Rated145732 to 15866.723.8Black1096T900000
     

    Check Valves with Push-to-Connect Fittings for Drinking Water

    Image of Product. Front orientation. Check Valves. Check Valves with Push-to-Connect Fittings for Drinking Water.
    Insert tubing into the push-to-connect fittings on these valves—no heat, solder, or flux required. Valves meet NSF/ANSI 61 for use in drinking water systems. All open to allow flow in one direction and close when flow stops or reverses.
    For Tube
    OD
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    Seal Material
    Color
    End-to-End
    Lg.
    For Use With
    Piston
    Material
    Spring
    Material
    Each
    Acetal Body
     
    Push to Connect × Push to Connect
    6 mm 145 psi @ 150° F0.2935 to 145EPDM
    Black1 15/16"Drinking WaterAcetal
    Stainless Steel
    3208K19000000
    8 mm 145 psi @ 70° F0.33335 to 145EPDM
    White1 15/16"Drinking WaterAcetal
    Acetal
    3208K3200000
    10 mm 145 psi @ 70° F0.33335 to 145EPDM
    White2 1/4"Drinking WaterAcetal
    Acetal
    3208K3300000
    12 mm 100 psi @ 150° F0.2935 to 145Buna-N/EPDM/Silicone Rubber
    Black2 11/16"Drinking WaterAcetal
    Stainless Steel
    3208K200000
     

    Check Valves with Yor-Lok Fittings

    Two sleeves give these fittings extra gripping power. They bite into tubing as you tighten the nut to form a strong seal. All are compatible with Swagelok®, Let-Lok, and Parker A-Lok fittings. Valves open to allow flow in one direction and close when flow stops or reverses.
    316 Stainless Steel Body—Spring-Loaded Piston
    Image of Product. Yor Lok Female Inlet × Yor Lok Female Outlet. Front orientation. Contains Annotated. Check Valves. Check Valves with Yor-Lok Fittings, 316 Stainless Steel Body—Spring-Loaded Piston, Female.

    Yor Lok Female Inlet ×

    Yor Lok Female Outlet

    316 stainless steel valves are more corrosion resistant than brass valves.
    Flow Coefficient (Cv)—Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
    For Tube
    OD
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    End-to-End
    Lg.
    Mounting Position
    For Use With
    Piston Material
    Spring Material
    Seal Material
    Each
    Yor-Lok Female Inlet × Yor-Lok Female Outlet
    6 mm 0.473,000 psi @ 70° F0.33-10 to 3752 3/8"Any Angle, Horizontal, VerticalAir, Argon, Helium, Krypton, Neon, Water, Xenon316 Stainless Steel
    302 Stainless Steel
    Fluoroelastomer
    45385K410000000
    10 mm 1.683,000 psi @ 70° F0.33-10 to 3752 1/2"Any Angle, Horizontal, VerticalAir, Argon, Helium, Krypton, Neon, Water, Xenon316 Stainless Steel
    302 Stainless Steel
    Fluoroelastomer
    45385K43000000
    12 mm 1.683,000 psi @ 70° F0.33-10 to 3753 1/16"Any Angle, Horizontal, VerticalAir, Argon, Helium, Krypton, Neon, Water, Xenon316 Stainless Steel
    302 Stainless Steel
    Fluoroelastomer
    45385K44000000
     
    back to top