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    31 Products

    Flange-Mount Check Valves

    Sandwich these valves between two ANSI flanges for backflow prevention at a fraction of the weight of flanged check valves and a reduced pipeline footprint. ANSI flanges are sold separately. All valves open to allow flow in one direction and close when flow stops or reverses.
    Cast Iron Body
    Image of System. Shown with Flanges (Not Included). Front orientation. Contains MultipleImages. Check Valves. Flange-Mount Check Valves.
    Image of Product. Front orientation. Check Valves. Flange-Mount Check Valves.

    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
    For Use With
    Disc
    Material
    Seal
    Material
    Each
    Flanged × Flanged
    260200 psi @ 70° F1.25-20 to 2502 1/8"Horizontal, Vertical125
    		Air, Argon, Helium, Krypton, Neon, Water, XenonBronzeBuna-N
    		5023K31000000
    2 1/2 100200 psi @ 70° F1.25-20 to 2502 1/8"Horizontal, Vertical125
    		Air, Argon, Helium, Krypton, Neon, Water, XenonBronzeBuna-N
    		5023K3200000
    3 170200 psi @ 70° F1.25-20 to 2502 1/4"Horizontal, Vertical125
    		Air, Argon, Helium, Krypton, Neon, Water, XenonBronzeBuna-N
    		5023K33000000
    4 340200 psi @ 70° F1.25-20 to 2502 1/2"Horizontal, Vertical125
    		Air, Argon, Helium, Krypton, Neon, Water, XenonBronzeBuna-N
    		5023K44000000
    5 520200 psi @ 70° F1.25-20 to 2502 3/4"Horizontal, Vertical125
    		Air, Argon, Helium, Krypton, Neon, Water, XenonBronzeBuna-N
    		5023K45000000
    6 850200 psi @ 70° F1.25-20 to 2503"Horizontal, Vertical125
    		Air, Argon, Helium, Krypton, Neon, Water, XenonBronzeBuna-N
    		5023K46000000
    8 1,600200 psi @ 70° F1.25-20 to 2503 3/4"Horizontal, Vertical125
    		Air, Argon, Helium, Krypton, Neon, Water, XenonBronzeBuna-N
    		5023K47000000
    10 2,400200 psi @ 70° F1.25-20 to 2504 1/4"Horizontal, Vertical125
    		Air, Argon, Helium, Krypton, Neon, Water, XenonBronzeBuna-N
    		5023K51000000
     

    Flanged Check Valves

    Bolt these valves to ANSI flanges. They open to allow flow in one direction and close when flow stops or reverses. All have a removable cap that provides easy access to internal components for maintenance.
    Cast Iron Body
    Image of Product. Front orientation. Check Valves. Flanged Check 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.
    Max. Steam Pressure
    @ Temp.
    Min. Opening
    Pressure, psi
    Temp. Range,
    ° F
    End-to-End
    Lg.
    Mounting
    Position
    Flange
    OD
    No. of Bolt
    Holes
    Bolt Hole
    Size
    Bolt Circle
    Dia.
    Bolts
    Included
    Includes
    Specs. Met
    For Use With
    Disc
    Material
    Seal
    Material
    Each
    Flanged × Flanged—Pressure Class 125
    2110200 psi @ 70° F125 psi @ 353° F1-20 to 4058"Horizontal6"45/8"4 3/4"NoRemovable CapASTM A126 Class B, MSS SP-71Air, Steam, WaterBronzeBronze8200T110000000
    2 1/2 193200 psi @ 70° F125 psi @ 353° F1-20 to 4058 1/2"Horizontal7"43/4"5 1/2"NoRemovable CapASTM A126 Class B, MSS SP-71Air, Steam, WaterBronzeBronze8200T12000000
    3 292200 psi @ 70° F125 psi @ 353° F1-20 to 4059 1/2"Horizontal7 1/2"43/4"6"NoRemovable CapASTM A126 Class B, MSS SP-71Air, Steam, WaterBronzeBronze8200T13000000
    4 468200 psi @ 70° F125 psi @ 353° F1-20 to 40511 1/2"Horizontal9"83/4"7 1/2"NoRemovable CapASTM A126 Class B, MSS SP-71Air, Steam, WaterBronzeBronze8200T14000000
    5 735200 psi @ 70° F125 psi @ 353° F1-20 to 40513"Horizontal10"83/4"8 1/2"NoRemovable CapASTM A126 Class B, MSS SP-71Air, Steam, WaterIronBronze8200T1500000000
    6 1,060200 psi @ 70° F125 psi @ 353° F1-20 to 40514"Horizontal11"87/8"9 1/2"NoRemovable CapASTM A126 Class B, MSS SP-71Air, Steam, WaterIronBronze8200T1600000000
    8 1,880200 psi @ 70° F125 psi @ 353° F1-20 to 40519 1/2"Horizontal13 1/2"83/4"11 3/4"NoRemovable CapASTM A126 Class B, MSS SP-71Air, Steam, WaterIronBronze8200T1700000000
     

    Compact Flange-Mount Check Valves

    Less than half the end-to-end length of standard flange-mount check valves, these can be installed between ANSI flanges in pipelines with limited clearance. ANSI flanges are sold separately. Valves open to allow flow in one direction and close when flow stops or reverses. All have a 316 stainless steel body for excellent corrosion resistance.
    316 Stainless Steel Body—Spring-Loaded Piston
    Image of System. Shown with Flanges (Not Included). Front orientation. Contains MultipleImages. Check Valves. Compact Flange-Mount Check Valves.
    Image of Product. Front orientation. Check Valves. Compact Flange-Mount Check Valves.

    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
    For Use With
    Piston Material
    Spring Material
    Seal Material
    Each
    Flanged × Flanged
    1/2 2.4720 psi @ 100° F0.5-10 to 4001/4"Any Angle, Horizontal, Vertical150, 300
    		Air, Argon, Helium, Krypton, Neon, Water, Xenon316 Stainless Steel
    		316 Stainless Steel
    		Viton® Fluoroelastomer
    		1969N110000000
    3/44.4720 psi @ 100° F0.5-10 to 4001/4"Any Angle, Horizontal, Vertical150, 300
    		Air, Argon, Helium, Krypton, Neon, Water, Xenon316 Stainless Steel
    		316 Stainless Steel
    		Viton® Fluoroelastomer
    		1969N12000000
    1 6.1720 psi @ 100° F0.5-10 to 4001/4"Any Angle, Horizontal, Vertical150, 300
    		Air, Argon, Helium, Krypton, Neon, Water, Xenon316 Stainless Steel
    		316 Stainless Steel
    		Viton® Fluoroelastomer
    		1969N13000000
    1 1/4 12.7720 psi @ 100° F0.5-10 to 4001/4"Any Angle, Horizontal, Vertical150, 300
    		Air, Argon, Helium, Krypton, Neon, Water, Xenon316 Stainless Steel
    		316 Stainless Steel
    		Viton® Fluoroelastomer
    		1969N14000000
    1 1/2 18.8720 psi @ 100° F0.5-10 to 4001/4"Any Angle, Horizontal, Vertical150, 300
    		Air, Argon, Helium, Krypton, Neon, Water, Xenon316 Stainless Steel
    		316 Stainless Steel
    		Viton® Fluoroelastomer
    		1969N15000000
    232720 psi @ 100° F0.5-10 to 4001/4"Any Angle, Horizontal, Vertical150, 300
    		Air, Argon, Helium, Krypton, Neon, Water, Xenon316 Stainless Steel
    		316 Stainless Steel
    		Viton® Fluoroelastomer
    		1969N16000000
    3 89720 psi @ 100° F0.5-10 to 4005/16"Any Angle, Horizontal, Vertical150, 300
    		Air, Argon, Helium, Krypton, Neon, Water, Xenon316 Stainless Steel
    		316 Stainless Steel
    		Viton® Fluoroelastomer
    		1969N18000000
    4 144720 psi @ 100° F0.5-10 to 4003/8"Any Angle, Horizontal, Vertical150, 300
    		Air, Argon, Helium, Krypton, Neon, Water, Xenon316 Stainless Steel
    		316 Stainless Steel
    		Viton® Fluoroelastomer
    		1969N19000000
     

    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
     

    Flanged Check Valves for Harsh Chemicals

    Bolt these valves to ANSI flanges. The glass-filled vinyl ester body and PTFE seal stand up to a wide range of harsh chemicals. Valves open to allow flow in one direction and close when flow stops or reverses.
    Glass-Filled Vinyl Ester Body—Ball
    Image of Product. Front orientation. Check Valves. Flanged Check Valves for Harsh Chemicals.
    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 Flange
    Class
    Flange
    OD
    No. of Bolt
    Holes
    Bolt Hole
    Size
    Bolt Circle
    Dia.
    Bolts
    Included
    Specs. Met
    For Use With
    Ball
    Material
    Seal
    Material
    Each
    Flanged × Flanged
    1 35200 psi @ 250° F1-40 to 250Beige5"Vertical150
    		4 1/4"45/8"3 1/8"NoASME B16.10, ASME B16.5Ammonia, Chlorine, Citric Acid, Deionized Water, Diesel Fuel, Ethanol, Ethylene Glycol, Fuel Oil, Gasoline, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Methanol (Methyl Alcohol), Methyl Ethyl Ketone (MEK), Mineral Spirits, Oil, Phosphoric Acid, Salt Water, Soap Solutions, Toluene (Methylbenzene), Water, XylenePTFE
    		PTFE
    		1869N10000000
    254140 psi @ 250° F1-40 to 250Beige7"Vertical150
    		6"43/4"4 3/4"NoASME B16.10, ASME B16.5Ammonia, Chlorine, Citric Acid, Deionized Water, Diesel Fuel, Ethanol, Ethylene Glycol, Fuel Oil, Gasoline, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Methanol (Methyl Alcohol), Methyl Ethyl Ketone (MEK), Mineral Spirits, Oil, Phosphoric Acid, Salt Water, Soap Solutions, Toluene (Methylbenzene), Water, XylenePTFE
    		PTFE
    		1869N3000000
     
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