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    59 Products

    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
    1/4 Not Rated220 psi @ 70° F2.540 to 180White1 7/16"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
    		46505K3100000
    3/8 Not Rated220 psi @ 70° F2.540 to 180White1 1/2"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
    		46505K3300000
    1/2 Not Rated220 psi @ 70° F2.540 to 180White1 13/16"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
    		46505K3500000
     
    PVC Body—Ball
    Image of Product. Front orientation. Check Valves. Threaded Check Valves for Harsh Chemicals, PVC Body—Ball.
    For Drinking Water—Valves for drinking water meet NSF/ANSI 61.
    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
    Specs.
    Met
    Food Industry
    Std.
    For Use With
    Ball
    Material
    Seal Material
    Each
    NPT Female Inlet × NPT Female Outlet
    1/4 1150 psi @ 70° F1.535 to 140Dark Gray3"Horizontal, VerticalASTM D1784NSF/ANSI 61
    		Air, Butane, Carbon Dioxide, Citric Acid, Deionized Water, Diesel Fuel, Drinking Water, Ethanol, Ethylene Glycol, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Methanol (Methyl Alcohol), Mineral Spirits, Natural Gas, Oil, Oxygen, Phosphoric Acid, Propane, Salt Water, Soap Solutions, Sodium Hydroxide (Caustic Soda), Sodium Hypochlorite (Bleach), WaterPVC
    		Fluoroelastomer
    		4721K11000000
    3/8 3150 psi @ 70° F1.535 to 140Dark Gray3"Horizontal, VerticalASTM D1784NSF/ANSI 61
    		Air, Butane, Carbon Dioxide, Citric Acid, Deionized Water, Diesel Fuel, Drinking Water, Ethanol, Ethylene Glycol, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Methanol (Methyl Alcohol), Mineral Spirits, Natural Gas, Oil, Oxygen, Phosphoric Acid, Propane, Salt Water, Soap Solutions, Sodium Hydroxide (Caustic Soda), Sodium Hypochlorite (Bleach), WaterPVC
    		Fluoroelastomer
    		4721K1200000
    3 250150 psi @ 70° F1.535 to 140Dark Gray10 9/16"Horizontal, VerticalASTM D1784NSF/ANSI 61
    		Air, Butane, Carbon Dioxide, Citric Acid, Deionized Water, Diesel Fuel, Drinking Water, Ethanol, Ethylene Glycol, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Methanol (Methyl Alcohol), Mineral Spirits, Natural Gas, Oil, Oxygen, Phosphoric Acid, Propane, Salt Water, Soap Solutions, Sodium Hydroxide (Caustic Soda), Sodium Hypochlorite (Bleach), WaterPVC
    		Fluoroelastomer
    		4721K22000000
    4 400150 psi @ 70° F1.535 to 140Dark Gray12 15/16"Horizontal, VerticalASTM D1784NSF/ANSI 61
    		Air, Butane, Carbon Dioxide, Citric Acid, Deionized Water, Diesel Fuel, Drinking Water, Ethanol, Ethylene Glycol, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Methanol (Methyl Alcohol), Mineral Spirits, Natural Gas, Oil, Oxygen, Phosphoric Acid, Propane, Salt Water, Soap Solutions, Sodium Hydroxide (Caustic Soda), Sodium Hypochlorite (Bleach), WaterPVC
    		Fluoroelastomer
    		4721K23000000
     
    CPVC Body—Ball
    Image of Product. Front orientation. Check Valves. Threaded Check Valves for Harsh Chemicals, CPVC Body—Ball.
    For Drinking Water—Valves for drinking water meet NSF/ANSI 61.
    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
    Specs.
    Met
    Food Industry
    Std.
    For Use With
    Ball
    Material
    Seal Material
    Each
    NPT Female Inlet × NPT Female Outlet
    3 250150 psi @ 70° F1.535 to 190Dark Gray10 9/16"Horizontal, VerticalASTM D1784NSF/ANSI 61
    		Air, Butane, Carbon Dioxide, Citric Acid, Deionized Water, Diesel Fuel, Drinking Water, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Mineral Spirits, Natural Gas, Nitric Acid, Oxygen, Phosphoric Acid, Propane, Salt Water, Soap Solutions, Sodium Hydroxide (Caustic Soda), Sodium Hypochlorite (Bleach), Sulfuric Acid, WaterCPVC
    		Fluoroelastomer
    		4721K250000000
    4 400150 psi @ 70° F1.535 to 190Dark Gray12 15/16"Horizontal, VerticalASTM D1784NSF/ANSI 61
    		Air, Butane, Carbon Dioxide, Citric Acid, Deionized Water, Diesel Fuel, Drinking Water, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Mineral Spirits, Natural Gas, Nitric Acid, Oxygen, Phosphoric Acid, Propane, Salt Water, Soap Solutions, Sodium Hydroxide (Caustic Soda), Sodium Hypochlorite (Bleach), Sulfuric Acid, WaterCPVC
    		Fluoroelastomer
    		4721K2600000000
     

    Flange-Mount Check Valves for Oil and Fuel

    Install these valves between ANSI flanges. ANSI flanges are sold separately. All valves open to allow flow in one direction and close when flow stops or reverses. Body is 316 stainless steel for excellent corrosion resistance.
    316 Stainless Steel Body
    Image of System. Shown with Flanges (Not Included). Front orientation. Contains MultipleImages. Check Valves. Flange-Mount Check Valves for Oil and Fuel.
    Image of Product. Front orientation. Check Valves. Flange-Mount Check Valves for Oil and Fuel.

    Shown with Flanges (Not

    Included)

    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 Flange
    Class
    Specs. Met
    For Use With
    Disc Material
    Seal Material
    Each
    Flanged × Flanged
    2481,440 psi @ 70° F1.25-20 to 1,0002 3/8"Horizontal, Vertical150, 300, 600
    		API Std 594, API Std 598Butane, Diesel Fuel, Fuel Oil, Gasoline, Kerosene, Natural Gas, Oil, Propane316 Stainless Steel
    		316 Stainless Steel
    		7767K310000000
    2 1/2 901,440 psi @ 70° F1.25-20 to 1,0002 5/8"Horizontal, Vertical150, 300, 600
    		API Std 594, API Std 598Butane, Diesel Fuel, Fuel Oil, Gasoline, Kerosene, Natural Gas, Oil, Propane316 Stainless Steel
    		316 Stainless Steel
    		7767K32000000
    3 1711,440 psi @ 70° F1.25-20 to 1,0002 7/8"Horizontal, Vertical150, 300, 600
    		API Std 594, API Std 598Butane, Diesel Fuel, Fuel Oil, Gasoline, Kerosene, Natural Gas, Oil, Propane316 Stainless Steel
    		316 Stainless Steel
    		7767K33000000
    4 291720 psi @ 70° F1.25-20 to 1,0002 7/8"Horizontal, Vertical150, 300
    		API Std 594, API Std 598Butane, Diesel Fuel, Fuel Oil, Gasoline, Kerosene, Natural Gas, Oil, Propane316 Stainless Steel
    		316 Stainless Steel
    		7767K34000000
    6 705275 psi @ 70° F1.25-20 to 1,0003 7/8"Horizontal, Vertical150
    		API Std 594, API Std 598Butane, Diesel Fuel, Fuel Oil, Gasoline, Kerosene, Natural Gas, Oil, Propane316 Stainless Steel
    		316 Stainless Steel
    		7767K3600000000
    8 1,795275 psi @ 70° F1.25-20 to 1,0005"Horizontal, Vertical150
    		API Std 594, API Std 598Butane, Diesel Fuel, Fuel Oil, Gasoline, Kerosene, Natural Gas, Oil, Propane316 Stainless Steel
    		316 Stainless Steel
    		7767K3700000000
     

    Check Valves with Push-to-Connect Fittings for Harsh Chemicals

    Image of Product. Back orientation. Check Valves. Check Valves with Push-to-Connect Fittings for Harsh Chemicals.
    Connect your inlet tubing into the push-to-connect fittings—no heat, solder, or flux required. These valves have a PVDF body and a fluoroelastomer seal for excellent chemical resistance. They open to allow flow in one direction and close when flow stops or reverses.
    For Tube
    OD
    Pipe
    Size
    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
    PVDF Body
     
    Push-to-Connect Inlet × NPTF Male Outlet
    3/8"1/4
    		300 psi @ 70° F0.50 to 250Black1 3/8"Air, Argon, Butane, Carbon Dioxide, Chlorine, Citric Acid, Deionized Water, Diesel Fuel, Ethanol, Ethylene Glycol, Gasoline, Helium, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Krypton, Mineral Spirits, Natural Gas, Neon, Nitric Acid, Nitrogen, Oil, Oxygen, Phosphoric Acid, Propane, Salt Water, Soap Solutions, Sodium Hypochlorite (Bleach), Sulfuric Acid, Toluene (Methylbenzene), Water, Xenon, XylenePVDF
    		Stainless Steel
    		Fluoroelastomer
    		2048N11000000
     

    Check Valves with Barbed Fittings for Harsh Chemicals

    Prevent backflow in chemical tubing lines. These valves have barbed fittings that grip onto tubing, providing a secure hold. The plastic body and fluoroelastomer seal provide excellent chemical resistance. Valves open to allow flow in one direction and close when flow stops or reverses.
    PVDF Body—Diaphragm
    Image of Product. Front orientation. Diaphragm Check Valve. Check Valves with Barbed Fittings for Harsh Chemicals.
    PVDF valve resists abrasion and UV light.
    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.
    Flow Coefficient
    (Cv)
    For Tube
    ID
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    Color
    End-to-End
    Lg.
    Mounting
    Position
    For Use With
    Diaphragm
    Material
    Seal Material
    Each
    Barbed Male Inlet × Barbed Male Outlet
    Not Rated1/4" 15 psi @ 70° F0.5-20 to 250White1 21/32"HorizontalAir, Butane, Chlorine, Citric Acid, Deionized Water, Diesel Fuel, Ethanol, Ethylene Glycol, Gasoline, Hydrochloric Acid, Nitric Acid, Oil, Propane, Salt Water, Soap Solutions, Sodium Hypochlorite (Bleach), Sulfuric Acid, WaterFluoroelastomer
    		Fluoroelastomer
    		47245K3700000
     
    Polypropylene Body—Spring-Loaded Ball
    Image of Product. Front orientation. Spring-Loaded Ball Check Valve. Check Valves with Barbed Fittings for Harsh Chemicals.
    Polypropylene valves are more corrosion resistant than 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.
    Flow Coefficient
    (Cv)
    For Tube
    ID
    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
    Barbed Male Inlet × Barbed Male Outlet
    0.11/8" 125 psi @ 70° F130 to 140White1 3/8"Any Angle, Horizontal, VerticalAcetone, Air, Argon, Citric Acid, Deionized Water, Diesel Fuel, Ethanol, Ethylene Glycol, Fuel Oil, Gasoline, Helium, Kerosene, Krypton, Mineral Spirits, Neon, Nitrogen, Oil, Propane, Salt Water, Soap Solutions, Toluene (Methylbenzene), Water, Xenon, Xylene316 Stainless Steel
    		302 Stainless Steel
    		Fluoroelastomer
    		7757K4400000
    0.23/16"125 psi @ 70° F130 to 140White1 3/4"Any Angle, Horizontal, VerticalAcetone, Air, Argon, Citric Acid, Deionized Water, Diesel Fuel, Ethanol, Ethylene Glycol, Fuel Oil, Gasoline, Helium, Kerosene, Krypton, Mineral Spirits, Neon, Nitrogen, Oil, Propane, Salt Water, Soap Solutions, Toluene (Methylbenzene), Water, Xenon, Xylene316 Stainless Steel
    		302 Stainless Steel
    		Fluoroelastomer
    		7757K450000
    0.31/4" 125 psi @ 70° F130 to 140White2 1/16"Any Angle, Horizontal, VerticalAcetone, Air, Argon, Citric Acid, Deionized Water, Diesel Fuel, Ethanol, Ethylene Glycol, Fuel Oil, Gasoline, Helium, Kerosene, Krypton, Mineral Spirits, Neon, Nitrogen, Oil, Propane, Salt Water, Soap Solutions, Toluene (Methylbenzene), Water, Xenon, Xylene316 Stainless Steel
    		302 Stainless Steel
    		Fluoroelastomer
    		7757K460000
     
    Nylon Body—Spring-Loaded Ball
    Image of Product. Front orientation. Spring-Loaded Ball Check Valve. Check Valves with Barbed Fittings for Harsh Chemicals.
    Nylon valves are more impact resistant than 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.
    Flow Coefficient
    (Cv)
    For Tube
    ID
    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
    Barbed Male Inlet × Barbed Male Outlet
    0.11/8" 125 psi @ 70° F135 to 140White1 3/8"Any Angle, Horizontal, VerticalAcetone, Air, Argon, Citric Acid, Deionized Water, Diesel Fuel, Ethanol, Ethylene Glycol, Fuel Oil, Gasoline, Helium, Kerosene, Krypton, Mineral Spirits, Neon, Nitrogen, Oil, Propane, Salt Water, Soap Solutions, Toluene (Methylbenzene), Water, Xenon, Xylene316 Stainless Steel
    		302 Stainless Steel
    		Fluoroelastomer
    		6079T5700000
    0.23/16"125 psi @ 70° F135 to 140White1 3/4"Any Angle, Horizontal, VerticalAcetone, Air, Argon, Citric Acid, Deionized Water, Diesel Fuel, Ethanol, Ethylene Glycol, Fuel Oil, Gasoline, Helium, Kerosene, Krypton, Mineral Spirits, Neon, Nitrogen, Oil, Propane, Salt Water, Soap Solutions, Toluene (Methylbenzene), Water, Xenon, Xylene316 Stainless Steel
    		302 Stainless Steel
    		Fluoroelastomer
    		6079T580000
    0.31/4" 125 psi @ 70° F135 to 140White2 1/16"Any Angle, Horizontal, VerticalAcetone, Air, Argon, Citric Acid, Deionized Water, Diesel Fuel, Ethanol, Ethylene Glycol, Fuel Oil, Gasoline, Helium, Kerosene, Krypton, Mineral Spirits, Neon, Nitrogen, Oil, Propane, Salt Water, Soap Solutions, Toluene (Methylbenzene), Water, Xenon, Xylene316 Stainless Steel
    		302 Stainless Steel
    		Fluoroelastomer
    		6079T590000
     

    Ultra-Chemical-Resistant Threaded Check Valves

    The most chemical-resistant check valves in our offering, these have a PFA body to withstand methyl ethyl ketone, sodium hypochlorite, and other extremely harsh chemicals. They open to allow flow in one direction and close when flow stops or reverses.
    PFA Body—Spring-Loaded Piston
    Image of Product. Female × Female. Front orientation. Contains Annotated. Check Valves. Ultra-Chemical-Resistant Threaded Check Valves, PFA Body—Spring-Loaded Piston, Female.
    Image of Product. Female × Male. Front orientation. Contains Annotated. Check Valves. Ultra-Chemical-Resistant Threaded Check Valves, PFA Body—Spring-Loaded Piston, Female, Male.

    Female × Female

    Female × Male

    Image of Product. Male × Female. Front orientation. Contains Annotated. Check Valves. Ultra-Chemical-Resistant Threaded Check Valves, PFA Body—Spring-Loaded Piston, Male, Female.
    Image of Product. Male × Male. Front orientation. Contains Annotated. Check Valves. Ultra-Chemical-Resistant Threaded Check Valves, PFA Body—Spring-Loaded Piston, Male.

    Male × Female

    Male × Male

    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
    Piston
    Material
    Spring
    Material
    Each
    NPT Female Inlet × NPT Female Outlet
    1/4 0.75125 psi @ 150° F10 to 210Semi-Clear White2 3/8"Any Angle, Horizontal, VerticalAcetone, Ammonia, Butane, Carbon Dioxide, Citric Acid, Diesel Fuel, Ethylene Glycol, Fuel Oil, Gasoline, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Methanol (Methyl Alcohol), Methyl Ethyl Ketone (MEK), Mineral Spirits, Natural Gas, Nitric Acid, Nitrogen, Oil, Oxygen, Phosphoric Acid, Propane, Salt Water, Soap Solutions, Sodium Hydroxide (Caustic Soda), Sodium Hypochlorite (Bleach), Sulfuric Acid, Toluene (Methylbenzene), Water, XylenePTFE
    		PTFE
    		47155K710000000
    1/2 4100 psi @ 150° F10 to 210Semi-Clear White3 3/8"Any Angle, Horizontal, VerticalAcetone, Ammonia, Butane, Carbon Dioxide, Citric Acid, Diesel Fuel, Ethylene Glycol, Fuel Oil, Gasoline, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Methanol (Methyl Alcohol), Methyl Ethyl Ketone (MEK), Mineral Spirits, Natural Gas, Nitric Acid, Nitrogen, Oil, Oxygen, Phosphoric Acid, Propane, Salt Water, Soap Solutions, Sodium Hydroxide (Caustic Soda), Sodium Hypochlorite (Bleach), Sulfuric Acid, Toluene (Methylbenzene), Water, XylenePTFE
    		PTFE
    		47155K73000000
     
    NPT Female Inlet × NPT Male Outlet
    1/4 0.75125 psi @ 150° F10 to 210Semi-Clear White2 7/16"Any Angle, Horizontal, VerticalAcetone, Ammonia, Butane, Carbon Dioxide, Citric Acid, Diesel Fuel, Ethylene Glycol, Fuel Oil, Gasoline, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Methanol (Methyl Alcohol), Methyl Ethyl Ketone (MEK), Mineral Spirits, Natural Gas, Nitric Acid, Nitrogen, Oil, Oxygen, Phosphoric Acid, Propane, Salt Water, Soap Solutions, Sodium Hydroxide (Caustic Soda), Sodium Hypochlorite (Bleach), Sulfuric Acid, Toluene (Methylbenzene), Water, XylenePTFE
    		PTFE
    		47155K74000000
     
    NPT Male Inlet × NPT Female Outlet
    1/4 0.75125 psi @ 150° F10 to 210Semi-Clear White2 1/16"Any Angle, Horizontal, VerticalAcetone, Ammonia, Butane, Carbon Dioxide, Citric Acid, Diesel Fuel, Ethylene Glycol, Fuel Oil, Gasoline, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Methanol (Methyl Alcohol), Methyl Ethyl Ketone (MEK), Mineral Spirits, Natural Gas, Nitric Acid, Nitrogen, Oil, Oxygen, Phosphoric Acid, Propane, Salt Water, Soap Solutions, Sodium Hydroxide (Caustic Soda), Sodium Hypochlorite (Bleach), Sulfuric Acid, Toluene (Methylbenzene), Water, XylenePTFE
    		PTFE
    		47155K76000000
     
    NPT Male Inlet × NPT Male Outlet
    1/4 0.75125 psi @ 150° F10 to 210Semi-Clear White2 7/16"Any Angle, Horizontal, VerticalAcetone, Ammonia, Butane, Carbon Dioxide, Citric Acid, Diesel Fuel, Ethylene Glycol, Fuel Oil, Gasoline, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Methanol (Methyl Alcohol), Methyl Ethyl Ketone (MEK), Mineral Spirits, Natural Gas, Nitric Acid, Nitrogen, Oil, Oxygen, Phosphoric Acid, Propane, Salt Water, Soap Solutions, Sodium Hydroxide (Caustic Soda), Sodium Hypochlorite (Bleach), Sulfuric Acid, Toluene (Methylbenzene), Water, XylenePTFE
    		PTFE
    		47155K75000000
     

    High-Temperature Threaded Check Valves for Oil and Fuel

    Image of Product. Front orientation. Check Valves. High-Temperature Threaded Check Valves for Oil and Fuel.
    For more than twice the temperature rating of standard check valves for oil and fuel, these have a heat-resistant fluoroelastomer seal that can withstand temperatures up to 500° F. They open to allow flow in one direction and close when flow stops or reverses.
    Pipe
    Size
    Max. Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    End-to-End
    Lg.
    For Use With
    Piston
    Material
    Spring Material
    Seal Material
    Each
    Bronze Body
     
    NPT Female × NPT Female
    1/4 300 psi @ 70° F250 to 5002 1/4"Butane, Diesel Fuel, Fuel Oil, Natural Gas, PropaneBrass316 Stainless Steel
    		Fluoroelastomer
    		4872K120000000
    3/8 300 psi @ 70° F250 to 5002 1/4"Butane, Diesel Fuel, Fuel Oil, Natural Gas, PropaneBrass316 Stainless Steel
    		Fluoroelastomer
    		4872K13000000
    1/2 300 psi @ 70° F250 to 5002 1/2"Butane, Diesel Fuel, Fuel Oil, Natural Gas, PropaneBrass316 Stainless Steel
    		Fluoroelastomer
    		4872K14000000
    3/4300 psi @ 70° F250 to 5002 3/4"Butane, Diesel Fuel, Fuel Oil, Natural Gas, PropaneBrass316 Stainless Steel
    		Fluoroelastomer
    		4872K15000000
    1 300 psi @ 70° F250 to 5003 3/8"Butane, Diesel Fuel, Fuel Oil, Natural Gas, PropaneBrass316 Stainless Steel
    		Fluoroelastomer
    		4872K16000000
    1 1/4 300 psi @ 70° F250 to 5003 3/4"Butane, Diesel Fuel, Fuel Oil, Natural Gas, PropaneBrass316 Stainless Steel
    		Fluoroelastomer
    		4872K17000000
     

    Pipeline Flame Arresters

    Image of Product. Front orientation. Flame Arresters. Pipeline Flame Arresters.
    To prevent flashback in flammable gas pipelines, an internal flame-arresting element absorbs the heat from a fire to extinguish the flame. These valves are commonly used in pilot lines connected to waste gas burners.
    Pipe
    Size
    Max. Pressure
    @ Temp.
    Max. Temp.,
    ° F
    End-to-End
    Lg.
    For Use With
    Flame-Arresting Element
    Material
    Each
    Aluminum Body
     
    NPT Female
    1/4
    		25 psi @ 176° F1763"Butane, Natural Gas, Propane316 Stainless Steel
    		4717K310000000
    1/2
    		25 psi @ 176° F1763 3/4"Butane, Natural Gas, Propane316 Stainless Steel
    		4717K32000000
    3/4
    		25 psi @ 176° F1763 3/4"Butane, Natural Gas, Propane316 Stainless Steel
    		4717K33000000
    1
    		25 psi @ 176° F1763 3/4"Butane, Natural Gas, Propane316 Stainless Steel
    		4717K34000000
    1 1/2
    		25 psi @ 176° F1763 3/4"Butane, Natural Gas, Propane316 Stainless Steel
    		4717K35000000
    2
    		25 psi @ 176° F1764 3/4"Butane, Natural Gas, Propane316 Stainless Steel
    		4717K36000000
     

    Easy-Install Threaded Check Valves for Harsh Chemicals

    To reduce installation time and allow for maintenance without detaching pipe connections, these valves have union fittings. The plastic body and fluoroelastomer seal provide excellent chemical resistance. Valves open to allow flow in one direction and close when flow stops or reverses.
    PVC Body—Ball
    Image of Product. Assembled View. Front orientation. Check Valves. Easy-Install Threaded Check Valves for Harsh Chemicals.
    Image of Product. Exploded View. Front orientation. Exploded view. Check Valves. Easy-Install Threaded Check Valves for Harsh Chemicals.

    Assembled View

    Exploded View

    PVC and CPVC valves come with unthreaded socket-connect female fittings in addition to the threaded NPT female fittings.
    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
    Specs.
    Met
    For Use With
    Ball
    Material
    Seal Material
    Each
    BSPP Female × BSPP Female
    1/2 6.3150 psi @ 70° F140 to 140Dark Gray4 1/4"Horizontal, VerticalASTM D1784Butane, Kerosene, Liquid Carbon Dioxide, Natural Gas, Nitric Acid, Oxygen, Phosphoric Acid, Propane, Salt Water, Soap Solutions, WaterPVC
    		Fluoroelastomer
    		7909K910000000
    1 25150 psi @ 70° F140 to 140Dark Gray5 3/16"Horizontal, VerticalASTM D1784Butane, Kerosene, Liquid Carbon Dioxide, Natural Gas, Nitric Acid, Oxygen, Phosphoric Acid, Propane, Salt Water, Soap Solutions, WaterPVC
    		Fluoroelastomer
    		7909K93000000
     

    Welding Gas Check Valves for Regulators

    Image of Product. Front orientation. Check Valves. Welding Gas Check Valves for Regulators.
    Stop the reverse flow of gas in your regulator. Check valves do not stop flashbacks.
    Max. Pressure, psi
    Male Hose
    Connection
    Male Pipe
    Connection
    Acetylene
    Hydrogen
    Propane
    Thread
    Direction
    Thread
    Size
    Thread
    Type
    Thread
    Direction
    Pipe
    Size
    Thread
    Type
    Material
    Each
    505050Right Hand9/16"-18
    		UNF
    		Left Hand1/4
    		NPT
    		Brass7957A4000000

    Welding Gas Flashback Arresters for Regulators

    Attach these arresters to the outlet connection of a regulator on a torch that cuts steel up to 11" thick. Arresters extinguish flames and have a check valve to stop reverse gas flow. They are reusable; resetting is not required after flashback.
    Left-Hand Threads—UNF Male × UNF Female
    Image of Product. Front orientation. Welding Gas Flashback Arresters. Welding Gas Flashback Arresters for Regulators, Standard Flashback Arresters.
    Image of Product. Front orientation. Welding Gas Flashback Arresters. Welding Gas Flashback Arresters for Regulators, High Flow Flashback Arresters.
    Image of Product. Front orientation. Welding Gas Flashback Arresters. Welding Gas Flashback Arresters for Regulators, Quick Disconnect Flashback Arresters.

    Standard

    Flashback

    Arresters

    High Flow

    Flashback

    Arresters

    Quick Disconnect

    Flashback Arresters

    Arresters with left-hand threads are for use with acetylene, hydrogen, and propane.
    High Flow Flashback Arresters—High-flow arresters give you twice the airflow rate compared to standard flashback arresters when they’re used at the same inlet pressure. They are often used with larger torch tips.
    Quick Disconnect Flashback Arresters—Quick-disconnect arresters have a fitting that connects and disconnects them from your torch, so you don't have to thread these arresters on and off with a wrench.
    Max. Pressure, psi
    Thread
    Size
    Acetylene
    Hydrogen
    Propane
    Material
    Specs. Met
    Each
    Standard Flashback Arresters
    3/8"-24
    		155050BrassEN 730, ISO 51757942A52000000
    9/16"-18
    		155050BrassEN 730, ISO 517578335A2500000
     
    High Flow Flashback Arresters
    9/16"-18
    		155050BrassEN 730, ISO 517578335A28000000
    7/8"-14
    		155050BrassEN 730, ISO 517578335A51000000
     
    Quick Disconnect Flashback Arresters
    9/16"-18
    		155050BrassEN 561, ISO 728978335A55000000
     
    Right-Hand and Left-Hand Threads—UNF Male × UNF Female
    Image of Product. Front orientation. Welding Gas Flashback Arresters. Welding Gas Flashback Arresters for Regulators, Standard Flashback Arresters.

    Standard

    Flashback

    Arresters

    Arresters with right-hand threads are for use with oxygen.
    Arresters with left-hand threads are for use with acetylene, hydrogen, and propane.
    Max. Pressure, psi
    Thread
    Size
    Oxygen
    Acetylene
    Hydrogen
    Propane
    Material
    Specs. Met
    Pair
    Standard Flashback Arresters
    9/16"-18
    		143155050BrassEN 730, ISO 517578335A430000000
     
    Left-Hand Threads—NPT Female × NPT Female
    Image of Product. Front orientation. Welding Gas Flashback Arresters. Welding Gas Flashback Arresters for Regulators, Female, Standard Flashback Arresters.

    Standard

    Flashback

    Arresters

    Arresters with left-hand threads are for use with acetylene, hydrogen, and propane.
    Max. Pressure, psi
    Pipe
    Size
    Acetylene
    Hydrogen
    Propane
    Material
    Specs. Met
    Each
    Standard Flashback Arresters
    1/4
    		155050BrassEN 730, ISO 517578335A540000000
     

    Welding Gas Check Valves for Torches

    Image of Product. Front orientation. Check Valves. Welding Gas Check Valves for Torches.
    Stop the reverse flow of gas in your torch. Check valves do not stop flashbacks.
    Max. Pressure, psi
    Male Hose
    Connection
    Female Hose
    Connection
    Acetylene
    Hydrogen
    Propane
    Thread
    Direction
    Thread
    Size
    Thread
    Type
    Thread
    Direction
    Thread
    Size
    Thread
    Type
    Material
    Each
    505050Left Hand3/8"-24
    		UNF
    		Left Hand3/8"-24
    		UNF
    		Brass7957A8000000
    505050Left Hand9/16"-18
    		UNF
    		Left Hand9/16"-18
    		UNF
    		Brass7957A200000

    Welding Gas Flashback Arresters for Torches

    These arresters attach directly to torches that cut steel up to 8" thick. They extinguish flames and have a check valve to stop reverse gas flow. They are reusable; resetting is not required after flashback.
    Left-Hand Threads—UNF Male × UNF Female
    Image of Product. Front orientation. Welding Gas Flashback Arresters. Welding Gas Flashback Arresters for Torches, Standard Flashback Arresters.
    Image of Product. Front orientation. Welding Gas Flashback Arresters. Welding Gas Flashback Arresters for Torches, High Flow Flashback Arresters.
    Image of Product. Front orientation. Welding Gas Flashback Arresters. Welding Gas Flashback Arresters for Torches, Quick Disconnect Flashback Arresters.

    Standard

    Flashback

    Arresters

    High Flow

    Flashback

    Arresters

    Quick Disconnect

    Flashback Arresters

    Arresters with left-hand threads are for use with acetylene, hydrogen, and propane.
    High Flow Flashback Arresters—High-flow arresters give you twice the airflow rate compared to standard flashback arresters when they’re used at the same inlet pressure. They are often used with larger torch tips.
    Quick Disconnect Flashback Arresters—Quick-disconnect arresters have a fitting that connects and disconnects them from your torch, so you don't have to thread these arresters on and off with a wrench.
    Max. Pressure, psi
    Thread
    Size
    Acetylene
    Hydrogen
    Propane
    Material
    Specs. Met
    Each
    Standard Flashback Arresters
    9/16"-18
    		155050BrassEN 730, ISO 517578335A22000000
     
    High Flow Flashback Arresters
    3/8"-24
    		155050BrassEN 730, ISO 51757942A1200000
    9/16"-18
    		155050BrassEN 730, ISO 517578335A46000000
    7/8"-14
    		155050BrassEN 730, ISO 517578335A48000000
     
    Quick Disconnect Flashback Arresters
    9/16"-18
    		155072BrassEN 561, ISO 728978335A2400000
     
    Right-Hand and Left-Hand Threads—UNF Male × UNF Female
    Image of Product. Front orientation. Welding Gas Flashback Arresters. Welding Gas Flashback Arresters for Torches, Standard Flashback Arresters.

    Standard

    Flashback

    Arresters

    Arresters with right-hand threads are for use with oxygen.
    Arresters with left-hand threads are for use with acetylene, hydrogen, and propane.
    Max. Pressure, psi
    Thread
    Size
    Oxygen
    Acetylene
    Hydrogen
    Propane
    Material
    Specs. Met
    Pair
    Standard Flashback Arresters
    9/16"-18
    		143155050BrassEN 730, ISO 517578335A410000000
     
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