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    29 Products

    Easy-Set Plastic Threaded Precision Flow-Adjustment Valves

    To ensure consistent and repeatable settings, these valves have color-coded handle threads and numerical markings. One full revolution of the handle reveals a new color to indicate the set point. Turn the handle to adjust flow in small increments for metering, sampling, and other applications requiring fine flow control. The locking knob handle has a ring that prevents accidental adjustment.
    Black Glass-Filled Polyester Plastic Body
    Image of Product. Front orientation. Flow-Adjustment Valves. Easy-Set Plastic Threaded Precision Flow-Adjustment Valves.
    Flow Coefficient (Cv)—Flow coefficient (Cv) is a measurement that indicates how much airflow can pass through a valve.
    Valves
    Mounting Nuts
    Overall
    Pipe
    Size
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Ht.
    Lg.
    Temp. Range,
    ° F
    Seal
    Material
    Panel Cutout
    Dia.
    Seat
    Material
    Needle Material
    End-to-End
    Lg.
    For Use
    With
    Valve
    Type
    Each
    Each
    NPTF Female × NPTF Female
    1/8 0.26200 psi @ 200° F2 13/16"1 15/16"0 to 200Buna-N
    		1"PolypropyleneZinc-Plated Steel1 15/16"Air, OxygenNeedle4891K710000004891K6100000
    1/4 0.48200 psi @ 200° F2 13/16"1 15/16"0 to 200Buna-N
    		1"PolypropyleneZinc-Plated Steel1 15/16"Air, OxygenNeedle4891K72000004891K610000
    3/8 1.06200 psi @ 200° F3 7/8"2 7/8"0 to 200Buna-N
    		1 3/8"PolypropyleneZinc-Plated Steel2 7/8"Air, OxygenNeedle4891K73000004891K620000
    1/2 1.35200 psi @ 200° F3 7/8"2 7/8"0 to 200Buna-N
    		1 3/8"PolypropyleneZinc-Plated Steel2 7/8"Air, OxygenNeedle4891K74000004891K620000
    3/4 1.96200 psi @ 200° F4 3/16"3"0 to 200Buna-N
    		1 3/8"PolypropyleneZinc-Plated Steel3"Air, OxygenNeedle4891K75000004891K620000
     
    Black Glass-Filled Polyester Plastic Body with Internal Check Valve
    Image of Product. Front orientation. Flow-Adjustment Valves. Easy-Set Plastic Threaded Precision Flow-Adjustment Valves.
    Internal check valves actuate when the pressure changes to stop flow control from the controlled direction and allow free flow in the opposite direction. Valves with an internal check valve are often used to control the speed of air cylinders and air-powered motors.
    Flow Coefficient (Cv)—Flow coefficient (Cv) is a measurement that indicates how much airflow can pass through a valve.
    Valves
    Mounting Nuts
    Overall
    Pipe
    Size
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Ht.
    Lg.
    Temp. Range,
    ° F
    Seal
    Material
    Panel Cutout
    Dia.
    Seat
    Material
    Needle Material
    End-to-End
    Lg.
    For Use
    With
    Valve
    Type
    Each
    Each
    NPTF Female × NPTF Female
    1/8 0.26200 psi @ 200° F2 13/16"1 15/16"0 to 200Buna-N
    		1"PolypropyleneZinc-Plated Steel1 15/16"Air, OxygenNeedle48995K310000004891K6100000
    1/4 0.48200 psi @ 200° F2 13/16"1 15/16"0 to 200Buna-N
    		1"PolypropyleneZinc-Plated Steel1 15/16"Air, OxygenNeedle48995K33000004891K610000
    3/8 1.06200 psi @ 200° F3 7/8"2 7/8"0 to 200Buna-N
    		1 3/8"PolypropyleneZinc-Plated Steel2 7/8"Air, OxygenNeedle48995K35000004891K620000
    1/2 1.35200 psi @ 200° F3 7/8"2 7/8"0 to 200Buna-N
    		1 3/8"PolypropyleneZinc-Plated Steel2 7/8"Air, OxygenNeedle48995K37000004891K620000
    3/4 1.96200 psi @ 200° F4 3/16"3"0 to 200Buna-N
    		1 3/8"PolypropyleneZinc-Plated Steel3"Air, OxygenNeedle48995K390000004891K620000
     

    Threaded Precision Flow-Adjustment Valves for Chemicals

    To withstand aggressive and corrosive solutions in chemical-processing applications, these valves have a fluoroelastomer seal and a plastic body. Turn the handle to adjust flow in small increments for metering, sampling, and other applications requiring fine flow control.
    White PVDF Body
    Image of Product. Front orientation. Flow-Adjustment Valves. Threaded Precision Flow-Adjustment Valves for Chemicals, White, 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.
    Pipe
    Size
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Max. Temp.,
    ° F
    Panel Cutout
    Dia.
    Seat
    Material
    End-to-End
    Lg.
    Valve
    Type
    For Use With
    Seal Material
    Needle
    Material
    Each
    NPT Female × NPT Female
    1/4 0.64150 psi @ 70° F3001 5/16"PTFE2 1/2"NeedleWater, Oil, Citric Acid, Deionized Water, Diesel Fuel, Ethanol, Ethylene Glycol, Fuel Oil, Gasoline, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Methanol (Methyl Alcohol), Mineral Spirits, Phosphoric Acid, Salt Water, Soap Solutions, Sodium Hydroxide (Caustic Soda), Sodium Hypochlorite (Bleach), Sulfuric AcidFluoroelastomer
    		Polypropylene2547N110000000
    3/8 0.72150 psi @ 70° F3001 5/16"PTFE2 1/2"NeedleWater, Oil, Citric Acid, Deionized Water, Diesel Fuel, Ethanol, Ethylene Glycol, Fuel Oil, Gasoline, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Methanol (Methyl Alcohol), Mineral Spirits, Phosphoric Acid, Salt Water, Soap Solutions, Sodium Hydroxide (Caustic Soda), Sodium Hypochlorite (Bleach), Sulfuric AcidFluoroelastomer
    		Polypropylene2547N12000000
    1/2 0.79150 psi @ 70° F3001 5/16"PTFE2 1/2"NeedleWater, Oil, Citric Acid, Deionized Water, Diesel Fuel, Ethanol, Ethylene Glycol, Fuel Oil, Gasoline, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Methanol (Methyl Alcohol), Mineral Spirits, Phosphoric Acid, Salt Water, Soap Solutions, Sodium Hydroxide (Caustic Soda), Sodium Hypochlorite (Bleach), Sulfuric AcidFluoroelastomer
    		Polypropylene2547N13000000
     
    Black Polypropylene Body
    Image of Product. Front orientation. Flow-Adjustment Valves. Threaded Precision Flow-Adjustment Valves for Chemicals, Black, 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.
    Overall
    Pipe
    Size
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Ht.
    Lg.
    Temp. Range,
    ° F
    Seal Material
    Panel Cutout
    Dia.
    Seat
    Material
    Needle
    Material
    End-to-End
    Lg.
    For Use With
    Valve
    Type
    Each
    NPT Female × NPT Female
    1/4 0.64150 psi @ 70° F3 7/16"2 1/2"40 to 260Fluoroelastomer
    		1 5/16"PTFEPolypropylene2 1/2"Water, Citric Acid, Ethylene Glycol, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Nitric Acid, Salt Water, Soap SolutionsNeedle4803K250000000
    3/8 0.72150 psi @ 70° F3 7/16"2 1/2"40 to 260Fluoroelastomer
    		1 5/16"PTFEPolypropylene2 1/2"Water, Citric Acid, Ethylene Glycol, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Nitric Acid, Salt Water, Soap SolutionsNeedle4803K26000000
    1/2 0.79150 psi @ 70° F3 7/16"2 1/2"40 to 260Fluoroelastomer
    		1 5/16"PTFEPolypropylene2 1/2"Water, Citric Acid, Ethylene Glycol, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Nitric Acid, Salt Water, Soap SolutionsNeedle4803K27000000
     

    Plastic Threaded Precision Flow-Adjustment Valves

    Plastic provides a lightweight alternative to metal valves. Turn the handle to adjust flow in small increments for metering, sampling, and other applications requiring fine flow control. These valves have a hex nut and threads below the handle for mounting through instrument panels.
    White Polypropylene Body
    Image of Product. Female × Female. Front orientation. Flow-Adjustment Valves. Plastic Threaded Precision Flow-Adjustment Valves, White, Straight, Female, NPT Thread.
    Image of Product. Female × Male. Front orientation. Flow-Adjustment Valves. Plastic Threaded Precision Flow-Adjustment Valves, White, Straight, Male, Female, NPT Thread.
    Image of Product. Male × Male. Front orientation. Flow-Adjustment Valves. Plastic Threaded Precision Flow-Adjustment Valves, White, Straight, Male, NPT Thread.

    Female ×

    Female

    Female × Male

    Male × Male

    Valves
    Mounting Nuts
    Overall
    Pipe
    Size
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Ht.
    Lg.
    Temp. Range,
    ° F
    Seal
    Material
    Panel Cutout
    Dia.
    Seat
    Material
    Needle
    Material
    End-to-End
    Lg.
    For Use With
    Valve
    Type
    Each
    Each
    NPT Female × NPT Female
    1/8 0.4125 psi @ 140° F2 5/8"2"35 to 140EPDM
    		7/8"PolypropylenePolypropylene2"Water, Air, Argon, Helium, Krypton, Neon, XenonNeedle7792K510000007781K8800000
    1/4 0.4125 psi @ 140° F2 5/8"2"35 to 140EPDM
    		7/8"PolypropylenePolypropylene2"Water, Air, Argon, Helium, Krypton, Neon, XenonNeedle7792K55000007781K880000
     
    NPT Female × NPT Male
    1/8 0.3125 psi @ 140° F2 5/8"2 1/4"35 to 140EPDM
    		7/8"PolypropylenePolypropylene2 1/4"Water, Air, Argon, Helium, Krypton, Neon, XenonNeedle7792K52000007781K880000
    1/4 0.4125 psi @ 140° F2 5/8"2 3/8"35 to 140EPDM
    		7/8"PolypropylenePolypropylene2 3/8"Water, Air, Argon, Helium, Krypton, Neon, XenonNeedle7792K56000007781K880000
     
    NPT Male × NPT Male
    1/4 0.4125 psi @ 140° F2 5/8"2 11/16"35 to 140EPDM
    		7/8"PolypropylenePolypropylene2 11/16"Water, Air, Argon, Helium, Krypton, Neon, XenonNeedle7792K57000007781K880000
     

    Precision Flow-Adjustment Valves with Push-to-Connect Fittings

    Insert tubing into the fittings on these valves—no heat, solder, or flux required. Turn the handle to adjust flow in small increments for metering, sampling, and other applications requiring fine flow control. All valves have a hex nut and threads below the handle for mounting through instrument panels.
    White Polypropylene Body
    Image of Product. Front orientation. Flow-Adjustment Valves. Precision Flow-Adjustment Valves with Push-to-Connect Fittings.
    Valves
    Mounting Nuts
    Overall
    For Tube
    OD
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Ht.
    Lg.
    Temp. Range,
    ° F
    Seal
    Material
    Panel Cutout
    Dia.
    Seat
    Material
    Needle
    Material
    End-to-End
    Lg.
    For Use With
    Valve
    Type
    Each
    Each
    Push to Connect × Push to Connect
    1/4" 0.3125 psi @ 140° F2 5/8"2 11/16"35 to 140EPDM
    		7/8"PolypropylenePolypropylene2 13/16"Water, Air, Argon, Helium, Krypton, Neon, XenonNeedle7792K710000007781K8800000
    3/8" 0.4125 psi @ 140° F2 5/8"2 11/16"35 to 140EPDM
    		7/8"PolypropylenePolypropylene2 13/16"Water, Air, Argon, Helium, Krypton, Neon, XenonNeedle7792K72000007781K880000
     

    Precision Flow-Adjustment Valves with Barbed Fittings

    Barbs grip onto tubing, providing a secure hold. Turn the handle on these valves to adjust flow in small increments for metering, sampling, and other applications requiring fine flow control. All have a hex nut and threads below the handle for panel mounting.
    White Polypropylene Body
    Image of Product. Front orientation. Flow-Adjustment Valves. Precision Flow-Adjustment Valves with Barbed Fittings.
    Valves
    Mounting Nuts
    Overall
    For Tube
    ID
    Flow Coefficient
    (Cv)
    Max. Pressure
    @ Temp.
    Ht.
    Lg.
    Temp. Range,
    ° F
    Seal
    Material
    Panel Cutout
    Dia.
    Seat
    Material
    Needle
    Material
    End-to-End
    Lg.
    For Use With
    Valve
    Type
    Each
    Each
    Barbed × Barbed
    1/4" 0.3125 psi @ 140° F2 5/8"3 5/16"35 to 140EPDM
    		7/8"PolypropylenePolypropylene3 3/8"Water, Air, Argon, Helium, Krypton, Neon, XenonNeedle7792K610000007781K8800000
    3/8" 0.3125 psi @ 140° F2 5/8"3 5/16"35 to 140EPDM
    		7/8"PolypropylenePolypropylene3 3/8"Water, Air, Argon, Helium, Krypton, Neon, XenonNeedle7792K63000007781K880000
    1/2"0.4125 psi @ 140° F2 5/8"3 5/16"35 to 140EPDM
    		7/8"PolypropylenePolypropylene3 3/8"Water, Air, Argon, Helium, Krypton, Neon, XenonNeedle7792K65000007781K880000
     
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