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20 series aluminum manual gear box applies to 90°rotary 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

ΦISO 

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/

Ø50×14

F14

140

600

1:11

1790

400-450

200

11

20165

36/

Ø50×14

F16

165

600

1:19

3250 

450-500

250

17.5

20254

Ø60×18/

Ø65×20/

Ø80×22

F16,F25

165,254

700

1:19

5500 

600-650

300

28


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