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DN40-DN300 Butterfly Valve

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Medium Capability:

Freshwater, Sea water, Air, steam, food, medicine and kinds of oil, acid, alkali, salt.
Feature:
Long service life with reliable seal and without frequent maintenance. Butterfly valve have flow characteristics three times better than globe valve, and about 75% of a same size gate valve。Butterfly valve can be used for on/off service and throttling，They are superior in Multi-function as compared to gate or globe valves. Butterfly valve can be widely used in chemical field due to trim options and choice of elastomeric liner . 
Butterfly valve have feature of light in weight and small in size, for example, weight andsize of a 10” butterfly valve are 1/9 and 1/6 of a 10” gate valve. So butterfly valve is easy to install and save cost of piping system. Butterfly valve with resilient seat design can be bubble tight as compared to metal seated gate or globe valves. Butterfly valves offer 90-degree open to close. Butterfly valve is approximate 35-40% cost of a same size gate valve. Also low installed cost than gate valve.      
Properly installed butterfly valves are self cleaning and are less susceptible to failure due to trash material in pipe.


（1）Taper Pin Designed Butterfly Valve DN40-DN300
    

Item

Qty

Part Name

1

1

Body

2

2

Long Bushing

3

1

Seat

4

1

Stem

5

1

Disc

6

1~2

Taper pin

7

1

Nameplate

8

2

Short Bushing

9

1

“O” Ring

10

1

Key



Structure and Parts List for Taper Pin Designed Butterfly Valve DN40-DN300
Nominal Pressure:PN10/PN16/PN20

（2）Split Stem Designed Butterfly Valve DN40-DN300
    

Item

Qty

Part Name

1

1

Body

2

1

Seat

3

1

Lower Stem

4

1

Disc

5

5

Short Bushing

6

3

“O” Ring

7

1

Upper Stem

8

2

Roll Pin

9

1

Nameplate

10

1

Key

 
Structure and Parts List for Split Stem Designed Butterfly Valve DN40-DN300
Nominal Pressure：PN10/PN16

（3）Throughout Stem without Pin Butterfly Valve DN40-DN300
 
Item
Qty
Part Name

1

1

Body

2

1

Lower Stem

3

1

Seat

4

1

Stem

5

1

Disc

6

3

Short Bushing

7

1

“O” Ring

8

1

Roll Pin

9

1

Nameplate

10

1

Key

 
Structure and Parts List for Throughout Stem without Pin Butterfly Valve DN40-DN300
Nominal Pressure：PN10/PN16

 

Body

DISC

Stem

Bushing

Seat

Material

 

Material

 

WorkingTemperature

(℃)

C.I

DI

416SS

Lubricative Bronze

NR

-20℃-+85℃

D.I

WCB

431SS

Macromolecule +PTFE

HYPALON

-18℃-+135℃

WCB

AL-Brz

316SS

316SS+PTFE

EPDM

-30℃-+110℃

AL-Brz

Stainless Steel

 

 

NEOPRENE

-7℃-+93℃

StainlessSteel

 

 

 

NBR

-12℃-+82℃

 

 

 

 

WRR

-10℃-+50℃

 

 

 

 

VITON

-23℃-+150℃

 

 

 

 

HRR

-20℃-+150℃

 

 

 

 

PTFE

+10℃-+150℃

Outline Dimensions for DN40-DN300 Butterfly Valve

Valve Size

Inch mm

A

Min.

B

C

D

E

F

Long Neck

Short Neck

Long Neck

Short Neck

1 1/2

40

12.5

24.0

70.0

84

150

100

32

252

212

2

50

52.9

32.3

76.3

89

161

100

32

273

212

2 1/2

65

64.5

46.1

89.0

108

175

113

32

296

234

3

80

78.8

64.4

103.9

120

181

124

32

308

251

4

100

104.0

86.3

135.0

150

200

152

32

346

298

5

125

123.3

110.6

159.0

181

213

152

32

372

311

6

150

155.6

134.8

188.4

208

226

165

32

397

336

8

200

202.5

192.4

238.1

260

260

205

45

480

425

10

250

250.5

241.7

292.4

320

292

253

45

540

495

12

300

301.6

291.8

344.1

375

337

277

45

624

564


Valve Size

Inch mm

G

H

I

J

K

L

P

m

M

R

1 1/2

40

33.0

35.0

12.6

77

50

7

4

M16

19

110

2

50

42.0

45.0

12.6

77

50

7

4

M16

19

125

2 1/2

65

44.7

47.6

12.6

77

50

7

4

M16

19

145

3

80

45.2

49.0

12.6

77

50

7

8

M16

19

160

4

100

52.1

54.7

15.8

92

70

10

8

M16

19

180

5

125

54.4

58.0

18.9

92

70

10

8

M16

19

210

6

150

55.8

58.6

18.9

92

70

10

8

M20

23

240

8

200

60.6

63.4

22.1

125

102

12

8

M20

23

295

10

250

65.6

70.0

28.5

125

102

12

12

M20

23

350

12

300

76.9

80.1

31.6

140

102

12

12

M20

23

400

Note：Dimensions for mounting flange above mentioned conform BS4504 PN10, and top mounting conform to ISO5211. When required, standards from other countries or any special requirements are also available.

Weight for DN40-DN300 Butterfly Valves

Valve Size

PN10/PN16

（Based on different type of body）

PN20

（Based on different type of body）

Inch

mm

WL

WLs

WS

WSs

LL

LLs

WL

WLs

WS

WSs

LL

LLs

1 1/2

40

2.0

1.7

2.2

1.8

3.3

2.8

2.0

1.7

2.2

1.8

3.3

2.8

2

50

2.3

2.0

2.5

2.2

3.8

3.2

2.3

2.0

2.5

2.2

3.8

3.2

2 1/2

65

3.0

2.6

3.2

3.0

4.2

4.0

3.0

2.6

3.2

3.0

4.2

4.0

3

80

3.4

2.8

3.6

3.4

4.7

4.2

3.4

2.8

3.6

3.4

4.7

4.2

4

100

4.7

4.5

4.9

4.6

8.5

7.2

4.7

4.5

4.9

4.6

8.5

7.2

5

125

6.8

6.5

7.0

7.3

10.9

9.7

6.8

6.5

7.0

7.3

10.9

9.7

6

150

7.7

7.4

7.8

7.6

14.2

12.4

9.7

9.4

9.8

9.6

16.2

11.4

8

200

13.2

13.0

13.2

13.1

19.5

18.8

16.3

16.1

16.3

16.2

22.6

21.9

10

250

20.6

19.5

21.0

19.0

32.0

29.0

26.1

25.0

26.5

24.5

37.5

34.5

12

300

28.2

24.9

32.5

29.2

40.0

36.7

34.9

31.6

39.2

35.9

46.7

43.4



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