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  • Declutch Override Gear Box

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    20 series aluminum manual gear box applies to 90rotary type butterfly valve, ball valve and plug valve etc. With electrostatic coating on the surface, the aluminum alloy housing is pleasing in appearance and highly corrosion-resistant and wear-proof.


    Structure & Material

    No.

    Parts

    QTY

    Material

    1

    Screw

    4

    Stainless steel

    2

    Indicator Cover

    1

    Plastic

    3

    Cover

    1

    Aluminum

    4

    O-ring(Cover)

    2

    NBR

    5

    Key

    1

    Carbon steel with black oxidation

    6

    Worm

    1

    Nodular cast iron

    7

    O-ring(Back)

    1

    NBR

    8

    Body

    1

    Aluminum

    9

    Adjust screw

    2

    Carbon steel with black oxidation

    10

    Gasket(Adjust screw)

    2

    Carbon steel with zinc coating

    11

    Nut(Adjust screw)

    2

    Carbon steel with zinc coating

    12

    Cover of Nut(Adjust screw)

    2

    NBR

    13

    Bearing

    2

    Powder metallurgy

    14

    Worm

    1

    Carbon steel #45

    15

    O-ring(Front)

    1

    NBR

    16

    Worm shaft

    1

    Carbon steel #45 /Stainless steel

    17

    Handle wheel

    1

    Carbon steel with epoxy coated

    18

    Key

    1

    Carbon steel with black oxidation


    Dimensions

    Model

    Square

    ISO 5211

    Flange

    Type

    ISO 

    Holes

    Ø

    Outptut/Input
    Torque Ratio

    Reference

    Output

    Torque(Nm)

    Butterfly

    valve

    Ball valve

    Model

    WT(KG)

    20070

    8/9/11/

    14/17

    F05,F07

    50,70

    140

    1:9.6

    180

    32-150

    50

    1.2

    20090

    8/9/11/

    14/17

    F07,F09

    70,90

    200

    1:12.5

    300

    32-200

    63

    2.1

    20102

    17/19/22

    F07,F10

    70,102

    250

    1:12.5

    540

    200-300

    80

    3.5

    20125

    17/19/22

    F10,F12

    102,125

    300

    1:12.5

    675

    250-350

    100

    4.8

    20140

    22/27

    F14

    140

    400

    1:10

    1310

    350-400

    150

    9.5

    20140B

    22/27/

    Ø5014

    F14

    140

    600

    1:11

    1790

    400-450

    200

    11

    20165

    36/

    Ø5014

    F16

    165

    600

    1:19

    3250 

    450-500

    250

    17.5

    20254

    Ø6018/

    Ø6520/

    Ø8022

    F16,F25

    165,254

    700

    1:19

    5500 

    600-650

    300

    28


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