Your location is:Products >> Urban construction industry >> Soft seal butterfly valve
Return to superior

Soft seal butterfly valve

Product Overview

Soft seal butterfly valve is a kind of valve whose closing part (butterfly plate) is a disc and rotates around the valve shaft to open and close. It mainly plays the role of cutting off and throttling on the pipeline. The butterfly plate is driven by the valve rod. If it is turned 90 degrees, it can be opened and closed once. By changing the deflection angle of the butterfly plate, the medium flow can be controlled. The commonly used butterfly valves are clip type butterfly valve, lug type butterfly valve and flange type butterfly valve. Butterfly valve is suitable for producing furnace, gas, natural gas, liquefied petroleum gas, city gas, cold and hot air, chemical smelting and power generation environmental protection, building water supply and drainage and other engineering systems to transport all kinds of corrosive and non corrosive fluid medium, used to regulate and cut off the flow of medium.

Structural characteristics

1. The inclined elliptical butterfly plate radial dynamic balance sealing system is adopted, the force on both sides of the valve inlet and outlet is approximately balanced, the opening torque of the valve is small, the positive and reverse sealing performance is reliable, and the bidirectional pressure bearing capacity is 100%;
2. The sealing surface of the valve is made of integral metal sealing ring, which is machined with high precision. The sealing cross-section is elliptical, which forms a sealing pair with the metal sealing surface of the valve seat. When the valve is opened and closed, the sealing surface of butterfly plate contacts or disengages instantaneously along the 360 ° circle, which can quickly and accurately realize the opening or closing action;
3. Three eccentric structure is adopted, that is, an angle eccentricity is added on the basis of double eccentric butterfly valve.

Execution standard

Design specification: GB/T 12238, JB/T8527
Flange connection: GB/T 9113, JB/T79, HG20592
Structure length: GB/T12221
Tests and inspection: GB/T13927

Performance parameter

Main material: cast steel, stainless steel, chromium-molybdenum steel, alloy steel, duplex steel
Product specification: DN50~2000mm
Pressure class: PN0.6~ 4.0mpa
Applicable medium: air, water, steam, gas, oil, acid, alkali, salt with weakly corrosive medium, etc
Applicable temperature: Carbon steel: -29℃~425℃ Stainless steel: -40℃~600℃
Driving mode: worm drive, pneumatic drive, electric drive, hydraulic drive

Product Dimensions

DN

L

D

D1

D2

b

f

N-d0

A

K

E

F

H

H1

H2

Φ2

N-d1

50

108

165

125

102

18

3

4-Φ18

180

65

50

13

83

338

28

12.6

4-Φ7

65

112

185

145

122

18

3

8-Φ18

180

65

50

13

93

358

28

12.6

4-Φ7

80

114

200

160

138

20

3

8-Φ18

245

65

50

13

100

413

28

12.6

4-Φ7

100

127

220

180

158

20

3

8-Φ18

240

90

70

13

114

428

28

15.77

4-Φ10

125

140

250

210

188

22

3

8-Φ18

240

90

70

13

125

444

28

18.92

4-Φ10

150

140

285

240

212

22

3

8-Φ22

350

90

70

13

143

553

28

18.92

4-Φ10

200

152

340

295

268

24

3

12-Φ22

350

125

102

13

170

678

38

22.1

4-Φ12

250

165

405

355

320

26

3

12-Φ26

550

125

102

13

198

742

38

28.45

4-Φ12

300

178

460

410

378

28

4

12-Φ26

600

125

102

20

223

803

38

31.6

4-Φ12

350

190

520

470

438

30

4

16-Φ26

600

150

125

20

270

866

45

31.6

4-Φ14

400

216

580

525

490

32

4

16-Φ30

600

175

140

20

300

940

51

33.15

4-Φ18

450

222

640

585

550

40

4

20-Φ30

750

175

140

20

340

995

51

37.95

4-Φ18

500

229

715

650

610

44

4

20-Φ33

750

175

140

22

355

1058

57

41.12

4-Φ18

600

267

840

770

725

54

5

20-Φ36

750

210

165

30

410

1163

70

50.63

4-Φ22

700

292

910

840

795

40

5

24-Φ36

750

300

254

30

478

1283

66

63.35

8-Φ18

800

318

1025

950

900

42

5

24-Φ39

750

300

254

30

529

1398

66

63.35

8-Φ18

900

330

1125

1050

1000

44

5

28-Φ39

1250

300

254

34

584

1498

118

75

8-Φ18

1000

410

1255

1170

1115

46

5

28-Φ42

1500

300

254

34

357

1608

142

85

8-Φ18

1200

470

1485

1390

1330

52

5

32-Φ48

1500

350

298

34

799

1876

150

105

8-Φ22

1400

530

1685

1590

1530

58

5

36-Φ48

-

415

356

40

919

-

200

120

8-Φ32

Privacy policy

This privacy Statement applies to all users of the Site and the services provided by the Site.We solemnly promise to respect and protect users' personal privacy. We will not publish any information related to users without users' authorization, unless required by law or procedure.We will regularly review privacy protection measures, track security technology trends, and update technology and management measures.< br/> 1. Users shall provide necessary personal information, usually including name, gender, contact number and E-mail address, when using the services of leaving messages, consulting and interactive questions on the website of China National Industry Holding Group Co., LTD.We will keep the user information and relevant requirements confidential management.
2. We will adopt technical and management measures to protect users' privacy.When sensitive information is provided to us by users, we will take reasonable steps to protect sensitive information of users, and we will also take reasonable security measures to protect personal information that has been stored.This website will strictly manage and protect the data provided by users, and will use the corresponding technology to prevent the loss, theft or change of users' personal data.
3. The website of China National Engineering Holding Group Co., Ltd. will strictly protect users' personal privacy and promise not to arbitrarily disclose users' personal information without users' consent.However, under the following exceptions, the aforementioned promises will not be warranted to disclose the user's relevant information.These circumstances include, but are not limited to: (1) when the user behavior on this site violates the measures for the administration of international networking of computer information network security protection, the measures for the administration of Internet information service, the "Internet electronic bulletin service management regulations" and "the standing committee of the National People's Congress on maintaining Internet security decision", or may damage or interfere with the rights and interests of other users or cause others to suffer damage, disclosure of personal information is to identify the user, contact, or to take legal action when necessary action.
(2) Personal information that must be disclosed or made public as required by laws and regulations.
(3) When judicial organs or other authorized organs perform official duties according to law and require websites to disclose specific personal data.
4. The website of China National Engineering Holding Group Co., Ltd. has taken complete technical measures to protect the integrity and confidentiality of users' information.However, the website of China National Industry Holding Group Co., Ltd. shall not bear any legal liability for the damage, disclosure and loss of user information caused by force majeure or special external forces such as computer virus infection or hacker attack, but we will take necessary measures to reduce the loss of users.
5. At any time when users think that the website of China National Industry Holding Group Co., Ltd. does not comply with this statement, please inform us by E-mail to GuoGong@GFGFV.com and we will make every effort to take corresponding improvement measures.

Legal notices

I. GUOGONG HOLDING GROUP CO.,LTD. independently owns or co-owns with relevant content providers the copyright of relevant content on this website.Any person who intends to use the text, pictures, video/audio and other information on the Website shall contact the website in advance and obtain explicit written permission.Without permission, any media, websites, business organizations and individuals should not be allowed to copy the contents of this website or work in the countries holding group co., LTD., belongs to a mirror on the server, and may not be all or part of this site page, make commercial links and their content, and shall not distort and tamper with the content on this web site is.
Second, all pages in the official website of creative format framework, animation, interactive design, structure, color, text, ICONS and other appropriate combination, in the form of digital published in digital form and fixed on the computer's hard drive space, contact by the public with the help of a network host, give a person with visual aesthetic feeling, this is not a simple arrangement of facts, has the originality.The above description is protected by this copyright notice.
Iii. We have tried our best to obtain permission from the copyright owner for the information reproduced on this website. If there is any omission, please contact this website.
Iv. The views expressed or implied in the relevant articles and materials reproduced on this website do not represent that of China National Industry Holding Group Co., LTD.
V. This website cannot control or guarantee the accuracy, timeliness and completeness of the information of each website linked to it.
The right to modify and update the website Statement belongs to the website of China National Industry Holding Group Co., LTD.
+86 0578-2626111
qrCode