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    12 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
     
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