nominal sizes

Out diameter

Bolt hole center circle diameter

Connect the extruding part diameter

inner diameter

Flange thickness

Connect the extruding part height

Trapezoidal groove center circle diameter

Trapezoidal groove depth

Trapezoidal slot width

Bolt hole diameter and number

Bolt diameter

DN

D

D1

D2

D3

t

f

L

E

F

n-d

M

20

117

82.5

63.5

19

22.3

6.4

42.9

6.4

8.7

4-19

16

25

124

89

69.8

25

23.9

6.4

50.8

6.4

8.7

4-19

16

40

156

114.5

90.5

38

27.1

6.4

68.3

6.4

8.7

4-23

20

50

165

127

108

51

30.3

8

82.6

8

11.9

8-19

16

65

190

149

127

64

33.4

8

101.6

8

11.9

8-23

20

80

210

168

146

76

36.6

8

123.8

8

11.9

8-23

20

100

254

200

174.6

102

46.1

8

149.2

8

11.9

8-23

20

125

279

235

209.6

127

43

8

181.0

8

11.9

8-23

20

150

318

270

241.3

152

44.6

8

211.1

8

11.9

12-23

20

200

381

330

301.6

203

49.3

8

269.9

8

11.9

12-25

22

250

444

387.5

355.6

254

55.7

8

323.9

8

11.9

16-30

27

300

521

451

412.5

305

58.8

8

381

8

11.9

16-33

30