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DIN Cast Steel Bellows Seal Gate Valve

Cast steel bellow seal gate valve also be used on steam, hot oil system pipeline.

Product Description

The key component of the bellows seal gate valve is the metal bellows. The connection between the bonnet and the valve stem adopts an automated roll welding technique. The metal bellows effectively ensures a leak-free valve stem section. An ergonomically designed handwheel provides extended durability and facilitates easier operation.

Applications: Suitable for use with steam, heat transfer oil, toxic and highly corrosive gases, as well as liquid mediums.

 

DIN Bellows Seal Gate Valve Advantage

What is the different between bellow globe valve and bellow gate valve?

1. The bellow seal globe valve more longer than bellow seal gate valve, so pipe line prefer to choice bellow globe valve.

2. Different flow and functions, DIN bellow seal globe valve can not only be used as a cut-off, but also can be used to regulate and control the pressure flow. The bellow seal gate valve is usually used for isolation. Bellow seal globe valve no need full open,the gate valve generally needs to be fully opened or closed.

3. Different installation methods. When use bellow globe valve, the medium can generally be from top to bottom. When medium flow in bellow seal gate valve,there is no no requirement on the direction of import and export.

4. When the bellow seal globe valve working, its handwheel and valve stem are generally rotating together, and will do the lifting action together, the bellow gate valve generally only the handwheel will rotate, besides it only do the lifting action.

 

Technical specification

Face to face: DIN3202

Flange ends: DIN2543-2546

Design standard: DIN

Test& inspection: DIN3230

 

Nominal Pressure

PN

 

Pressure test

Strength test

1.4PN

MPa

Sealing test

1.0PN

Gas seal test

0.5

--

--

Temputer

-20℃~425℃

 

Main Material(mostly) it can OEM

 

NO.

Part name

Material

1

Body

1.4401, SS321,SS304

2

Seat

1.4301, Stl

3

Disc

2Cr13, Stl, 507L

4

Pin

2Cr13

5

Bellows

SS321, SS316 ETC

6

Stem

1.4401, 2Cr13

7

Gasket

Flexible graphite + stainless steel

8

Cover

GS-C25, 1.4401, SS321,SS304

9

Nut

ASTM 194-2H, A194-8

10

Double-headed bolt

ASTM 194-B7, A193-B8

11

Packing

BY Ply-wooden case

12

Gland

GS-C25, 1.4301, 1.4401

13

Locator

1C25

14

Stem nut

Copper alloy, D2, BL2

15

Hand wheel

KTH330-08

16

Cap

1C45

 

Connection Size (DN15-DN350)

 

PN 16

DN

Main connection size

L

D

D1

D2

b

f

H

n-Φd

15

130

95

65

45

16

2

197

4-Φ14

20

150

105

75

58

18

2

197

4-Φ14

25

160

115

85

68

18

2

205

4-Φ14

32

180

140

100

78

18

2

208

4-Φ18

40

200

150

110

88

18

3

230

4-Φ18

50

230

165

125

102

20

3

233

4-Φ18

65

290

185

145

122

22

3

254

4-Φ18

80

310

200

160

138

24

3

277

8-Φ18

100

350

235

180

158

24

3

365

8-Φ18

125

400

250

210

188

26

3

392

8-Φ18

150

480

285

240

212

28

3

420

8-Φ22

200

600

340

295

268

34

3

580

12-Φ22

250

650

405

355

320

33

3

750

12-Φ25

300

750

460

410

375

33

4

925

12-Φ25

350

850

520

470

435

34

4

1030

16-Φ25

250

650

405

355

335

32

3

750

12-Φ30

300

750

460

410

375

34

4

925

16-Φ30

350

850

520

470

435

34

4

1030

16-Φ33

125

400

270

220

188

26

3

410

8-Φ26

150

480

300

250

218

28

3

425

8-Φ26

200

600

340

310

278

34

3

540

12-Φ30

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