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    75 Products

    Threaded Check Valves

    These valves open to allow flow in one direction and close when flow stops or reverses.
    Connectors, NPT Female Inlet × NPT Female Outlet
    Image of Product. Female Inlet × Female Outlet. Front orientation. Contains Annotated. Female. Threaded Check Valves, Female.
    Image of Specification. Flared Angle Connector. Front orientation. Contains Annotated. Connector Fitting. Threaded Check Valves.

    Female Inlet × Female

    Outlet

    Flared Angle Connector

    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.
    Pipe
    Size
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    Spring Material
    Seal
    Material
    End-to-End
    Lg.
    For Use With
    Each
    Brass Body—Brass Spring-Loaded Piston
    1/8
    		0.6500 psi @ 70° F1-20 to 180302 Stainless Steel
    		Buna-N
    		1 3/8"Air, Argon, Helium, Krypton, Neon, Water, Xenon7768K11000000
     
    Connectors, NPT Male Inlet × NPT Male Outlet
    Image of Product. Male Inlet × Male Outlet. Front orientation. Contains Annotated. Male. Threaded Check Valves, Male.
    Image of Specification. Flared Angle Connector. Front orientation. Contains Annotated. Connector Fitting. Threaded Check Valves.

    Male Inlet × Male

    Outlet

    Flared Angle Connector

    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.
    Pipe
    Size
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    Spring Material
    Seal
    Material
    End-to-End
    Lg.
    For Use With
    Each
    Brass Body—Brass Spring-Loaded Piston
    1/8
    		0.2500 psi @ 70° F1-20 to 180302 Stainless Steel
    		Buna-N
    		1 3/16"Air, Argon, Helium, Krypton, Neon, Water, Xenon7768K15000000
     
    Adapters, NPT Female Inlet × NPT Male Outlet
    Image of Product. Female Inlet × Male Outlet. Front orientation. Contains Annotated. Male. Threaded Check Valves, Female.
    Image of Specification. Flared Angle Adapter. Front orientation. Contains Annotated. Adapter. Threaded Check Valves.

    Female Inlet × Male

    Outlet

    Flared Angle Adapter

    316 Stainless Steel Body—316 stainless steel valves have the best corrosion resistance.
    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.
    Pipe
    Size
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    Spring Material
    Seal Material
    End-to-End
    Lg.
    For Use With
    Each
    Brass Body—Brass Spring-Loaded Piston
    1/8
    		0.4500 psi @ 70° F1-20 to 180302 Stainless Steel
    		Buna-N
    		1 1/16"Air, Argon, Helium, Krypton, Neon, Water, Xenon7768K21000000
     
    316 Stainless Steel Body—316 Stainless Steel Spring-Loaded Piston
    1/8
    		0.2500 psi @ 70° F1-15 to 400302 Stainless Steel
    		Fluoroelastomer
    		1 1/16"Air, Argon, Helium, Krypton, Neon, Water, Xenon7768K81100000
     
    Adapters, NPT Male Inlet × NPT Female Outlet
    Image of Product. Male Inlet × Female Outlet. Front orientation. Contains Annotated. Female. Threaded Check Valves, Male.
    Image of Specification. Flared Angle Adapter. Front orientation. Contains Annotated. Adapter. Threaded Check Valves.

    Male Inlet × Female

    Outlet

    Flared Angle Adapter

    316 Stainless Steel Body—316 stainless steel valves have the best corrosion resistance.
    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.
    Pipe
    Size
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    Spring Material
    Seal Material
    End-to-End
    Lg.
    For Use With
    Each
    Brass Body—Brass Spring-Loaded Piston
    1/8
    		0.4500 psi @ 70° F1-20 to 180302 Stainless Steel
    		Buna-N
    		1 1/4"Air, Argon, Helium, Krypton, Neon, Water, Xenon7768K25000000
     
    316 Stainless Steel Body—316 Stainless Steel Spring-Loaded Piston
    1/8
    		0.2500 psi @ 70° F1-15 to 400302 Stainless Steel
    		Fluoroelastomer
    		1 1/4"Air, Argon, Helium, Krypton, Neon, Water, Xenon7768K81200000
     
    Connectors, NPTF Female Inlet × NPTF Female Outlet
    Image of Product. Female Inlet × Female Outlet. Front orientation. Contains Annotated. Female. Threaded Check Valves, Female.
    Image of Specification. Flared Angle Connector. Front orientation. Contains Annotated. Connector Fitting. Threaded Check Valves.

    Female Inlet × Female

    Outlet

    Flared Angle Connector

    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.
    Pipe
    Size
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    Spring Material
    Seal Material
    End-to-End
    Lg.
    For Use With
    Each
    Brass Body—Brass Spring-Loaded Piston
    1/8
    		1.11,000 psi @ 70° F0.310 to 400304 Stainless Steel
    		Fluoroelastomer
    		2"Air, Argon, Helium, Krypton, Neon, Water, Xenon7775K51000000
     
    Connectors, NPTF Male Inlet × NPTF Male Outlet
    Image of Product. Male Inlet × Male Outlet. Front orientation. Contains Annotated. Male. Threaded Check Valves, Male.
    Image of Specification. Flared Angle Connector. Front orientation. Contains Annotated. Connector Fitting. Threaded Check Valves.

    Male Inlet × Male

    Outlet

    Flared Angle Connector

    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.
    Pipe
    Size
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    Spring Material
    Seal Material
    End-to-End
    Lg.
    For Use With
    Each
    Brass Body—Brass Spring-Loaded Piston
    1/8
    		1.11,000 psi @ 70° F0.310 to 400304 Stainless Steel
    		Fluoroelastomer
    		1 1/4"Air, Argon, Helium, Krypton, Neon, Water, Xenon7775K61000000
     
    Connectors, BSPP Female Inlet × BSPP Female Outlet
    Image of Product. Female Inlet × Female Outlet. Front orientation. Contains Annotated. Female. Threaded Check Valves, Female.
    Image of Specification. Flared Angle Connector. Front orientation. Contains Annotated. Connector Fitting. Threaded Check Valves.

    Female Inlet × Female

    Outlet

    Flared Angle Connector

    316 Stainless Steel Body—316 stainless steel valves have the best corrosion resistance.
    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.
    Pipe
    Size
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Max. Steam Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    Spring Material
    Seal Material
    End-to-End
    Lg.
    For Use With
    Each
    316 Stainless Steel Body—316 Stainless Steel Spring-Loaded Piston
    1/8
    		1.85580 psi @ 350° F150 psi @ 212° F40 to 355302 Stainless Steel
    		Fluoroelastomer
    		2"Air, Argon, Helium, Krypton, Neon, Steam, Water, Xenon1958N110000000
     

    Compact Threaded Check Valves

    With a shorter end-to-end length than other check valves, these fit in tight spaces. They open to allow flow in one direction and close when flow stops or reverses.
    NPT Male Inlet × NPT Male Outlet
    Image of Product. Male Inlet × Male Outlet. Front orientation. Contains Annotated. Male. Compact Threaded Check Valves, Male.

    Male Inlet × Male

    Outlet

    303 Stainless Steel Body—303 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.
    Brass Body
    303 Stainless
    Steel Body
    Pipe
    Size
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    End-to-End
    Lg.
    For Use With
    Ball Material
    Each
    Each
    304 Stainless Steel Seal
    1/8 0.081200 psi @ 70° F235 to 3001"Air, Nitrogen, Water304 Stainless Steel
    		8567T110000008567T12000000
     
    304 Stainless Steel Seal with Loctite® Internal Sealant
    1/8 0.0812,000 psi @ 70° F235 to 3001"Air, Nitrogen, Water304 Stainless Steel
    		8567T301000008567T30300000
     
    NPT Male Inlet × NPT Female Outlet
    Image of Product. Male Inlet × Female Outlet. Front orientation. Contains Annotated. Female. Compact Threaded Check Valves, Male.

    Male Inlet ×

    Female Outlet

    303 Stainless Steel Body—303 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.
    Brass Body
    303 Stainless
    Steel Body
    Pipe
    Size
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    End-to-End
    Lg.
    For Use With
    Ball Material
    Each
    Each
    304 Stainless Steel Seal
    1/8 0.081200 psi @ 70° F235 to 3007/8"Air, Nitrogen, Water304 Stainless Steel
    		8567T3050000008567T309000000
     
    NPT Female Inlet × NPT Male Outlet
    Image of Product. Female Inlet × Male Outlet. Back orientation. Contains Annotated. Male. Compact Threaded Check Valves, Female.

    Female Inlet ×

    Male Outlet

    303 Stainless Steel Body—303 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.
    Brass Body
    303 Stainless
    Steel Body
    Pipe
    Size
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    End-to-End
    Lg.
    For Use With
    Ball Material
    Each
    Each
    304 Stainless Steel Seal
    1/8 0.081200 psi @ 70° F235 to 3007/8"Air, Nitrogen, Water304 Stainless Steel
    		8567T3070000008567T311000000
     

    Check Valves with Barbed Fittings

    Barbs grip onto tubing, providing a secure hold. These valves open to allow flow in one direction and close when flow stops or reverses.
    PVC Body—Spring-Loaded Ball
    Image of Product. NPT Male Inlet × Barbed Male Outlet (Spring-Loaded Ball). Front orientation. Contains Annotated. Spring-Loaded Ball Check Valve. Check Valves with Barbed Fittings, NPT Thread, Barbed Fitting Connection, Male.
    Image of Product. Barbed Male Inlet × NPT Male Outlet (Spring-Loaded Ball). Front orientation. Contains Annotated. Spring-Loaded Ball Check Valve. Check Valves with Barbed Fittings, Barbed Fitting Connection, NPT Thread, Male.

    NPT Male Inlet × Barbed Male

    Outlet (Spring-Loaded Ball)

    Barbed Male Inlet × NPT Male

    Outlet (Spring-Loaded Ball)

    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 Inlet
    Tube ID
    Pipe
    Size
    For Outlet
    Tube ID
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    Color
    End-to-End
    Lg.
    For Use With
    Ball Material
    Spring Material
    Seal
    Material
    Each
    Barbed Male Inlet × NPT Male Outlet
    1/8"1/8
    		—Not Rated125 psi @ 70° F135 to 140Dark Gray2 5/8"Air, Argon, Helium, Krypton, Neon, Water, Xenon316 Stainless Steel
    		302 Stainless Steel
    		Buna-N
    		7933K98000000
    3/8"1/8
    		—Not Rated125 psi @ 70° F135 to 140Dark Gray3 1/8"Air, Argon, Helium, Krypton, Neon, Water, Xenon316 Stainless Steel
    		302 Stainless Steel
    		Buna-N
    		7933K10500000
     
    NPT Male Inlet × Barbed Male Outlet
    —1/8
    		1/8"Not Rated125 psi @ 70° F135 to 140Dark Gray2 5/8"Air, Argon, Helium, Krypton, Neon, Water, Xenon316 Stainless Steel
    		302 Stainless Steel
    		Buna-N
    		7933K7600000
    —1/8
    		1/4"Not Rated125 psi @ 70° F135 to 140Dark Gray3 1/8"Air, Argon, Helium, Krypton, Neon, Water, Xenon316 Stainless Steel
    		302 Stainless Steel
    		Buna-N
    		7933K7700000
     
    Polypropylene Body—Spring-Loaded Ball
    Image of Product. Barbed Male Inlet × NPT Male Outlet (Spring-Loaded Ball). Front orientation. Contains Annotated. Spring-Loaded Ball Check Valve. Check Valves with Barbed Fittings, Barbed Fitting Connection, NPT Thread, Male.

    Barbed Male Inlet × NPT Male

    Outlet (Spring-Loaded Ball)

    Polypropylene valves are more corrosion resistant than PVC or nylon 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 Inlet
    Tube ID
    Pipe
    Size
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    Color
    End-to-End
    Lg.
    For Use With
    Ball Material
    Spring Material
    Seal
    Material
    Each
    Barbed Male Inlet × NPT Male Outlet
    1/8"1/8
    		Not Rated125 psi @ 70° F135 to 140White1 5/8"Air, Argon, Helium, Krypton, Neon, Water, Xenon316 Stainless Steel
    		302 Stainless Steel
    		Buna-N
    		7757K11400000
     
    Nylon Body—Spring-Loaded Ball
    Image of Product. Barbed Male Inlet × NPT Male Outlet (Spring-Loaded Ball). Front orientation. Contains Annotated. Spring-Loaded Ball Check Valve. Check Valves with Barbed Fittings, Barbed Fitting Connection, NPT Thread, Male.

    Barbed Male Inlet × NPT Male

    Outlet (Spring-Loaded Ball)

    Nylon valves are more impact resistant than PVC or polypropylene 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 Inlet
    Tube ID
    Pipe
    Size
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    Color
    End-to-End
    Lg.
    For Use With
    Ball Material
    Spring Material
    Seal
    Material
    Each
    Barbed Male Inlet × NPT Male Outlet
    1/8"1/8
    		Not Rated125 psi @ 70° F135 to 140White1 5/8"Air, Argon, Helium, Krypton, Neon, Water, Xenon316 Stainless Steel
    		302 Stainless Steel
    		Buna-N
    		6079T12400000
    3/16"1/8
    		Not Rated125 psi @ 70° F135 to 140White1 13/16"Air, Argon, Helium, Krypton, Neon, Water, Xenon316 Stainless Steel
    		302 Stainless Steel
    		Buna-N
    		6079T1260000
     
    Nylon Body—Spring-Loaded Piston
    Image of Product. Front orientation. Contains Annotated. Spring-Loaded Piston Check Valve. Check Valves with Barbed Fittings, NPT Thread, Barbed Fitting Connection, Male.
    Image of Product. Front orientation. Contains Annotated. Spring-Loaded Piston Check Valve. Check Valves with Barbed Fittings, Barbed Fitting Connection, NPT Thread, Male.

    Male, Male, Barbed

    Fitting Connection,

    NPT Thread

    Male

    NPT Thread

    Barbed Fitting Connection

    Male

    Nylon valves are more impact resistant than PVC or polypropylene 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 Inlet
    Tube ID
    Pipe
    Size
    For Outlet
    Tube ID
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    Color
    End-to-End
    Lg.
    For Use
    With
    Piston
    Material
    Spring Material
    Seal
    Material
    Each
    Barbed Male Inlet × NPT Male Outlet
    3/16"1/8
    		—Not RatedNot Rated1-20 to 250White1 1/2"Air, WaterNylon
    		316 Stainless Steel
    		Buna-N
    		1371T91000000
     
    NPT Male Inlet × Barbed Male Outlet
    —1/8
    		3/16"Not RatedNot Rated1-20 to 250White1 1/2"Air, WaterNylon
    		316 Stainless Steel
    		Buna-N
    		1371T1200000
     

    Inline Hydraulic Check Valves

    Hydraulic check valves open to allow flow in one direction and close when flow stops or reverses.
    NPTF Female Inlet × NPTF Female Outlet—Ball Check Valve
    Image of Product. Front orientation. Hydraulic Check Valves. Inline Hydraulic Check Valves, NPTF Female Inlet × NPTF Female Outlet—Ball Check Valve.
    NPTF (Dryseal) threads are compatible with NPT threads.
    Brass Body—Brass valves have good corrosion resistance.
    303 Stainless Steel Body—303 stainless steel valves are more corrosion resistant than brass valves.
    Inlet
    Connection
    Outlet
    Connection
    Pipe
    Size
    Dash
    Size
    Pipe
    Size
    Dash
    Size
    Max. Flow
    Rate, gpm
    Flow Coefficient
    (Cv)
    Max. Pressure,
    psi
    Min. Opening
    Pressure, psi
    Port-to-Port
    Lg.
    Hex
    Wd.
    Mounting
    Position
    Temp. Range,
    ° F
    Each
    Brass Body
    1/8
    		021/8
    		021.50.232,0002.51 1/2"11/16"Any Angle-15 to 4005010K71000000
     
    Steel Body
    1/8
    		021/8
    		021.50.235,0002.51 1/2"11/16"Any Angle-15 to 4005010K5100000
     
    303 Stainless Steel Body
    1/8
    		021/8
    		021.50.235,0002.51 1/2"11/16"Any Angle-15 to 4005010K6100000
     
    NPTF Male Inlet × NPTF Male Outlet—Ball Check Valve
    Image of Product. Front orientation. Hydraulic Check Valves. Inline Hydraulic Check Valves, NPTF Male Inlet × NPTF Male Outlet—Ball Check Valve.
    NPTF (Dryseal) threads are compatible with NPT threads.
    Brass Body—Brass valves have good corrosion resistance.
    Inlet
    Connection
    Outlet
    Connection
    Pipe
    Size
    Dash
    Size
    Pipe
    Size
    Dash
    Size
    Max. Flow
    Rate, gpm
    Flow Coefficient
    (Cv)
    Max. Pressure,
    psi
    Min. Opening
    Pressure, psi
    Seal
    Material
    Port-to-Port
    Lg.
    Hex
    Wd.
    Mounting
    Position
    Temp. Range,
    ° F
    Each
    Brass Body
    1/8
    		021/8
    		0210.172,0002.5—1"7/16"Any Angle-30 to 19046105K61000000
    1/8
    		021/8
    		0210.172,0002.5Buna-N
    		1"7/16"Any Angle-30 to 19046105K5900000
     

    Air Flow Check Valves

    Valves open to allow flow in one direction and close when flow stops or reverses.
    NPT Female Inlet × NPT Female Outlet
    Image of Product. Front orientation. Contains Annotated. Air Flow Check Valves. Air Flow Check Valves, NPT Female Inlet × NPT Female Outlet.
    Flow Coefficient (Cv)—Flow coefficient (Cv) is a measurement that indicates how much airflow can pass through a valve.
    Overall
    Inlet Pipe
    Size
    Outlet
    Pipe Size
    Flow Coefficient
    (Cv)
    Min. Flow
    Rate, scfm
    Max. Flow
    Rate, scfm
    Max. Pressure,
    psi
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    Lg.
    Dia.
    Each
    316 Stainless Steel Body
    1/8
    		1/8
    		Not Rated00.6758070 to 3551 15/16"7/8"1096T120000000
     

    Threaded Check Valves for Harsh Chemicals

    These valves open to allow flow in one direction and close when flow stops or reverses.
    PVDF Body—Spring-Loaded Ball
    Image of Product. Front orientation. Check Valves. Threaded Check Valves for Harsh Chemicals, PVDF Body—Spring-Loaded Ball.
    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.
    Pipe
    Size
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    Color
    End-to-End
    Lg.
    Mounting Position
    For Use With
    Ball Material
    Spring Material
    Seal Material
    Each
    NPT Male Inlet × NPT Male Outlet
    1/8 Not Rated220 psi @ 70° F2.540 to 180White1"Any Angle, Horizontal, VerticalAir, Ammonia, Butane, Carbon Dioxide, Chlorine, Citric Acid, Deionized Water, Diesel Fuel, Ethylene Glycol, Fuel Oil, Gasoline, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Natural Gas, Nitric Acid, Oil, Oxygen, Phosphoric Acid, Propane, Salt Water, Sodium Hydroxide (Caustic Soda), Toluene (Methylbenzene), Water, Xylene316 Stainless Steel
    		316 Stainless Steel
    		Fluoroelastomer
    		46505K21000000
     

    Threaded Check Valves for Oil and Fuel

    These valves open to allow flow in one direction and close when flow stops or reverses. They function both horizontally and vertically. When vertical, the flow arrow must point up.
    Brass Body—Spring-Loaded Piston
    Image of Product. Female Inlet × Female Outlet. Front orientation. Contains Annotated. Check Valves. Threaded Check Valves for Oil and Fuel, Brass Body—Spring-Loaded Piston, Female.
    Image of Product. Female Inlet × Male Outlet. Front orientation. Contains Annotated. Check Valves. Threaded Check Valves for Oil and Fuel, Brass Body—Spring-Loaded Piston, Male, Female.
    Image of Product. Male Inlet × Female Outlet. Front orientation. Contains Annotated. Check Valves. Threaded Check Valves for Oil and Fuel, Brass Body—Spring-Loaded Piston, Female, Male.
    Image of Product. Male Inlet × Male Outlet. Front orientation. Contains Annotated. Check Valves. Threaded Check Valves for Oil and Fuel, Brass Body—Spring-Loaded Piston, Male.

    Female Inlet × Female

    Outlet

    Female Inlet × Male

    Outlet

    Male Inlet × Female

    Outlet

    Male Inlet × Male

    Outlet

    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.
    Pipe
    Size
    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
    NPT Female Inlet × NPT Female Outlet
    1/8 0.6500 psi @ 70° F1-20 to 1801 3/8"Any Angle, Horizontal, VerticalDiesel Fuel, Gasoline, OilBrass302 Stainless Steel
    		Fluoroelastomer
    		7768K51000000
     
    NPT Female Inlet × NPT Male Outlet
    1/8 0.4500 psi @ 70° F1-20 to 1801 1/16"Any Angle, Horizontal, VerticalDiesel Fuel, Gasoline, OilBrass302 Stainless Steel
    		Fluoroelastomer
    		7768K6100000
     
    NPT Male Inlet × NPT Female Outlet
    1/8 0.4500 psi @ 70° F1-20 to 1801 1/4"Any Angle, Horizontal, VerticalDiesel Fuel, Gasoline, OilBrass302 Stainless Steel
    		Fluoroelastomer
    		7768K6500000
     
    NPT Male Inlet × NPT Male Outlet
    1/8 0.2500 psi @ 70° F1-20 to 1801 3/16"Any Angle, Horizontal, VerticalDiesel Fuel, Gasoline, OilBrass302 Stainless Steel
    		Fluoroelastomer
    		7768K5500000
     

    High-Cycling Check Valves

    With internal components that resist wear from frequent operation, these valves can cycle as often as once per second. Barbed fittings and unthreaded fittings grip onto tubing, providing a secure hold. All valves open to allow flow in one direction and close when flow stops or reverses.
    Nylon Body
    Image of Product. NPT Male Inlet × Barbed Male Outlet. Front orientation. Contains Annotated. Diaphragm Check Valve. High-Cycling Check Valves, NPT Thread, Barbed Fitting Connection, Male.

    NPT Male Inlet ×

    Barbed Male Outlet

    Nylon valves are more impact resistant than polypropylene valves.
    Pipe
    Size
    For Tube
    ID
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    Diaphragm
    Material
    Seal Material
    Color
    End-to-End
    Lg.
    For Use
    With
    Each
    NPT Male Inlet × Barbed Male Outlet
    1/8
    		1/8"50 psi @ 65° F0.5-60 to 200Silicone Rubber
    		Silicone Rubber
    		Off-White1 3/8"Air, Water2987K3500000
    1/8
    		3/16"50 psi @ 65° F0.5-60 to 200Silicone Rubber
    		Silicone Rubber
    		Off-White1 9/16"Air, Water2987K360000
    1/8
    		3/8"50 psi @ 65° F0.5-60 to 200Silicone Rubber
    		Silicone Rubber
    		Off-White1 5/8"Air, Water2987K380000
     
    Polypropylene Body
    Image of Product. NPT Male Inlet × Barbed Male Outlet. Front orientation. Contains Annotated. Diaphragm Check Valve. High-Cycling Check Valves, NPT Thread, Barbed Fitting Connection, Male.

    NPT Male Inlet ×

    Barbed Male Outlet

    Polypropylene valves are more corrosion resistant than nylon valves.
    Pipe
    Size
    For Tube
    ID
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    Diaphragm
    Material
    Seal Material
    Color
    End-to-End
    Lg.
    For Use
    With
    Each
    NPT Male Inlet × Barbed Male Outlet
    1/8
    		1/8"50 psi @ 65° F0.532 to 250Fluoroelastomer
    		Fluoroelastomer
    		Off-White1 3/8"Air, Water47245K12400000
    1/8
    		3/16"50 psi @ 65° F0.532 to 250Fluoroelastomer
    		Fluoroelastomer
    		Off-White1 1/2"Air, Water47245K1220000
    1/8
    		1/4"50 psi @ 65° F0.532 to 250Fluoroelastomer
    		Fluoroelastomer
    		Off-White1 1/2"Air, Water47245K1260000
    1/8
    		3/8"50 psi @ 65° F0.532 to 250Fluoroelastomer
    		Fluoroelastomer
    		Off-White1 5/8"Air, Water47245K1190000
     
    Polycarbonate Body
    Image of Product. NPT Male Inlet × Barbed Male Outlet. Front orientation. Contains Annotated. Diaphragm Check Valve. High-Cycling Check Valves, NPT Thread, Barbed Fitting Connection, Male.

    NPT Male Inlet ×

    Barbed Male Outlet

    Polycarbonate valves are clear so you can monitor your line.
    Pipe
    Size
    For Tube
    ID
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    Diaphragm
    Material
    Seal Material
    Color
    End-to-End
    Lg.
    For Use
    With
    Each
    NPT Male Inlet × Barbed Male Outlet
    1/8
    		1/8"50 psi @ 65° F0.5-80 to 275Silicone Rubber
    		Silicone Rubber
    		Clear1 3/8"Air, Water47245K12500000
    1/8
    		3/16"50 psi @ 65° F0.5-80 to 275Silicone Rubber
    		Silicone Rubber
    		Clear1 1/2"Air, Water47245K1230000
    1/8
    		1/4"50 psi @ 65° F0.5-80 to 275Silicone Rubber
    		Silicone Rubber
    		Clear1 1/2"Air, Water47245K1270000
    1/8
    		3/8"50 psi @ 65° F0.5-80 to 275Silicone Rubber
    		Silicone Rubber
    		Clear1 5/8"Air, Water47245K1210000
     

    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.
    Acetal Body—NPT Male Inlet × Push-to-Connect Female Outlet Straight
    Image of Product. NPT Male Inlet × Push-to-Connect Female Outlet Straight. Front orientation. Contains Annotated. Straight. Check Valves with Push-to-Connect Fittings, Female, Male, Acetal Body.

    NPT Male Inlet ×

    Push-to-Connect Female

    Outlet Straight

    Acetal valves are more wear resistant than PVC 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.
    Inlet Pipe
    Size
    For Outlet
    Tube OD
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    Color
    End-to-End
    Lg.
    For Use
    With
    Piston
    Material
    Spring Material
    Seal
    Material
    Each
    1/8
    		5/32"Not Rated25 psi @ 70° F140 to 100Gray1"Air, WaterNylon
    		316 Stainless Steel
    		Buna-N
    		1866T11000000
    1/8
    		3/16"0.6525 psi @ 70° F1-30 to 250Gray1"Air, WaterNylon
    		302 Stainless Steel
    		Buna-N
    		1866T12100000
    1/8
    		1/4"Not Rated25 psi @ 70° F140 to 100Gray7/8"Air, WaterNylon
    		316 Stainless Steel
    		Buna-N
    		1866T1700000
    1/8
    		5/16"0.6525 psi @ 70° F1-30 to 250Gray1 1/16"Air, WaterNylon
    		302 Stainless Steel
    		Buna-N
    		1866T12200000
    1/8
    		3/8"0.6525 psi @ 70° F1-30 to 250Gray1 1/4"Air, WaterNylon
    		302 Stainless Steel
    		Buna-N
    		1866T12300000
    Acetal Body—NPT Male Inlet × Push-to-Connect Female Outlet 90° Elbow
    Image of Product. NPT Male Inlet × Push-to-Connect Female Outlet 90° Elbow. Top orientation. Contains Annotated. 90° Elbow. Check Valves with Push-to-Connect Fittings, Acetal Body, Female, Male.

    NPT Male Inlet

    ×

    Push-to-Connect

    Female Outlet

    90° Elbow

    Acetal valves are more wear resistant than PVC 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.
    Inlet Pipe
    Size
    For Outlet
    Tube OD
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    Color
    Port-to-Port
    Lg.
    For Use
    With
    Piston
    Material
    Spring Material
    Seal
    Material
    Each
    1/8
    		5/32"0.6525 psi @ 70° F1-30 to 250Gray1 1/4"Air, WaterNylon
    		302 Stainless Steel
    		Buna-N
    		1866T131000000
    1/8
    		3/16"0.6525 psi @ 70° F1-30 to 250Gray1 1/4"Air, WaterNylon
    		302 Stainless Steel
    		Buna-N
    		1866T13200000
    1/8
    		1/4"Not Rated25 psi @ 70° F140 to 100Gray1 5/16"Air, WaterNylon
    		316 Stainless Steel
    		Buna-N
    		1866T8700000
    1/8
    		5/16"0.6525 psi @ 70° F1-30 to 250Gray1 3/8"Air, WaterNylon
    		302 Stainless Steel
    		Buna-N
    		1866T13300000
    Acetal Body—Push-to-Connect Female Inlet × NPT Male Outlet Straight
    Image of Product. Push-to-Connect Female Inlet × NPT Male Outlet Straight. Front orientation. Contains Annotated. Straight. Check Valves with Push-to-Connect Fittings, Female, Acetal Body, Male.

    Push-to-Connect Female

    Inlet × NPT Male Outlet

    Straight

    Acetal valves are more wear resistant than PVC 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 Inlet
    Tube OD
    Outlet
    Pipe Size
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    Color
    End-to-End
    Lg.
    For Use
    With
    Piston
    Material
    Spring Material
    Seal
    Material
    Each
    5/32"1/8
    		0.6525 psi @ 70° F1-30 to 250Gray1"Air, WaterNylon
    		302 Stainless Steel
    		Buna-N
    		1866T153000000
    3/16"1/8
    		0.6525 psi @ 70° F1-30 to 250Gray1"Air, WaterNylon
    		302 Stainless Steel
    		Buna-N
    		1866T14700000
    1/4"1/8
    		0.6525 psi @ 70° F1-30 to 250Gray7/8"Air, WaterNylon
    		302 Stainless Steel
    		Buna-N
    		1866T14300000
    5/16"1/8
    		0.6525 psi @ 70° F1-30 to 250Gray1 1/16"Air, WaterNylon
    		302 Stainless Steel
    		Buna-N
    		1866T15500000
    3/8"1/8
    		0.6525 psi @ 70° F1-30 to 250Gray1 1/4"Air, WaterNylon
    		302 Stainless Steel
    		Buna-N
    		1866T14800000
    Acetal Body—Push-to-Connect Female Inlet × NPT Male Outlet 90° Elbow
    Image of Product. Push-to-Connect Female Inlet × NPT Male Outlet 90° Elbow. Front orientation. Contains Annotated. 90° Elbow. Check Valves with Push-to-Connect Fittings, Female, Acetal Body, Male.

    Push-to-Connect

    Female Inlet × NPT

    Male Outlet 90° Elbow

    Acetal valves are more wear resistant than PVC 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 Inlet
    Tube OD
    Outlet
    Pipe Size
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    Color
    Port-to-Port
    Lg.
    For Use
    With
    Piston
    Material
    Spring Material
    Seal
    Material
    Each
    5/32"1/8
    		0.6525 psi @ 70° F1-30 to 250Gray1 1/4"Air, WaterNylon
    		302 Stainless Steel
    		Buna-N
    		1866T167000000
    3/16"1/8
    		0.6525 psi @ 70° F1-30 to 250Gray1 1/4"Air, WaterNylon
    		302 Stainless Steel
    		Buna-N
    		1866T16400000
    1/4"1/8
    		0.6525 psi @ 70° F1-30 to 250Gray1 3/8"Air, WaterNylon
    		302 Stainless Steel
    		Buna-N
    		1866T15800000
    5/16"1/8
    		0.6525 psi @ 70° F1-30 to 250Gray1 3/8"Air, WaterNylon
    		302 Stainless Steel
    		Buna-N
    		1866T16900000

    Plastic Threaded Check Valves

    Plastic provides a lightweight alternative to metal. These valves open to allow flow in one direction and close when flow stops or reverses.
    PVC Body—Spring-Loaded Ball
    Image of Product. Female Inlet × Female Outlet. Front orientation. Contains Annotated. Check Valves. Plastic Threaded Check Valves, PVC Body—Spring-Loaded Ball, Female.
    Image of Product. Female Inlet × Male Outlet. Front orientation. Contains Annotated. Check Valves. Plastic Threaded Check Valves, PVC Body—Spring-Loaded Ball, Male, Female.
    Image of Product. Male Inlet × Male Outlet. Front orientation. Contains Annotated. Check Valves. Plastic Threaded Check Valves, PVC Body—Spring-Loaded Ball, Male.

    Female Inlet × Female

    Outlet

    Female Inlet × Male

    Outlet

    Male Inlet × Male Outlet

    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.
    Pipe
    Size
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    Color
    End-to-End
    Lg.
    Mounting Position
    For Use With
    Ball Material
    Spring Material
    Seal
    Material
    Each
    NPT Female Inlet × NPT Female Outlet
    1/8 1.1125 psi @ 70° F130 to 140Dark Gray2 1/4"Horizontal, VerticalAir, Argon, Helium, Krypton, Neon, Water, Xenon316 Stainless Steel
    		302 Stainless Steel
    		Buna-N
    		7933K24000000
     
    NPT Female Inlet × NPT Male Outlet
    1/8 1125 psi @ 70° F130 to 140Dark Gray2 1/2"Horizontal, VerticalAir, Argon, Helium, Krypton, Neon, Water, Xenon316 Stainless Steel
    		302 Stainless Steel
    		Buna-N
    		7933K2500000
     
    NPT Male Inlet × NPT Male Outlet
    1/8 0.9125 psi @ 70° F130 to 140Dark Gray2 3/4"Horizontal, VerticalAir, Argon, Helium, Krypton, Neon, Water, Xenon316 Stainless Steel
    		302 Stainless Steel
    		Buna-N
    		7933K2600000
     

    High-Pressure Threaded Check Valves

    These valves are rated for up to twice the pressure of standard check valves. They open to allow flow in one direction and close when flow stops or reverses.
    316 Stainless Steel Body—Spring-Loaded Piston
    Image of Product. Female Inlet × Female Outlet. Back orientation. Contains Annotated. Check Valves. High-Pressure Threaded Check Valves, 316 Stainless Steel Body—Spring-Loaded Piston, Female.

    Female Inlet × 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.
    Pipe
    Size
    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
    NPT Female Inlet × NPT Female Outlet
    1/8 0.13,000 psi @ 70° F0.33-5 to 3501 3/4"Horizontal, VerticalAir, Argon, Helium, Krypton, Neon, Water, Xenon316 Stainless Steel
    		302 Stainless Steel
    		Fluoroelastomer
    		7838K53000000
     

    Plastic Threaded Check Valves for Oil and Fuel

    Plastic provides a lightweight alternative to metal. These valves open to allow flow in one direction and close when flow stops or reverses.
    Nylon Body—Ball
    Image of Product. Connector, Male Outlet × Male Outlet. Front orientation. Contains Annotated. Black. Plastic Threaded Check Valves for Oil and Fuel, Nylon Body, Connector Fitting.
    Image of Product. Adapter, Male Inlet × Female Outlet. Front orientation. Contains Annotated. Male. Plastic Threaded Check Valves for Oil and Fuel, Adapter.
    Image of Product. Connector, Female Inlet × Female Outlet. Front orientation. Contains Annotated. 2 1/4" End-to-End Length. Plastic Threaded Check Valves for Oil and Fuel.

    Connector, Male Outlet × Male

    Outlet

    Adapter, Male Inlet × Female

    Outlet

    Connector, Female Inlet ×

    Female Outlet

    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.
    Pipe
    Size
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    Color
    End-to-End
    Lg.
    Fitting
    Type
    For Use With
    Ball Material
    Spring
    Material
    Seal Material
    Each
    NPT Female × NPT Female
    1/8 1.1125 psi @ 70° F0.3335 to 140Black2 1/4"ConnectorDiesel Fuel, Gasoline, OilStainless Steel
    		Stainless Steel
    		Fluoroelastomer
    		5492K201000000
     
    NPT Male × NPT Female
    1/8 1125 psi @ 70° F0.3335 to 140Black2 7/16"AdapterDiesel Fuel, Gasoline, OilStainless Steel
    		Stainless Steel
    		Fluoroelastomer
    		5492K20300000
     
    NPT Male × NPT Male
    1/8 0.9125 psi @ 70° F0.3335 to 140Black2 11/16"ConnectorDiesel Fuel, Gasoline, OilStainless Steel
    		Stainless Steel
    		Fluoroelastomer
    		5492K20400000
     

    High-Temperature Threaded Check Valves

    The heat-resistant rubber seal withstands temperatures up to 500° F. These valves open to allow flow in one direction and close when flow stops or reverses.
    Bronze Body—Spring-Loaded Piston
    Image of Product. 1/8 to 1 1/4 Pipe Size Bronze. Front orientation. Check Valves. High-Temperature Threaded Check Valves, Bronze Body—Spring-Loaded Piston.
    Image of Product. Repair Kit for 1/8 to 1 1/4 Pipe Size Bronze Valves. Front orientation. Valve Repair Kits. High-Temperature Threaded Check Valves, Spring-Loaded Piston Check Valve.

    1/8 to 1 1/4 Pipe

    Size Bronze

    Repair Kit for 1/8

    to 1 1/4 Pipe Size

    Bronze Valves

    Use bronze valves when corrosion is not a concern.
    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.
    Repair Kits—Repair kits include everything you need to rebuild the valve.
    Check Valves
    Repair Kits
    Pipe
    Size
    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
    For Pipe
    Size
    Each
    NPT Female Inlet × NPT Female Outlet
    1/8 Not Rated300 psi @ 70° F250 to 5002 1/4"Horizontal, VerticalAir, Argon, Helium, Krypton, Neon, XenonBrass316 Stainless Steel
    		Silicone Rubber
    		4872K1010000001/8, 1/4, 3/8
    		4872K106000000
     
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