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CN | EN

API bellows gate valve

Technical Parameters

Product model: WZ41H/Y
Nominal diameter: DN15-DN300
Nominal pressure: 150LB-600LB
Connection method: flange, welding
Applicable media: steam, heat transfer oil, hot and cold water, molten salt, other chemical media, etc
Application industries: petroleum, chemical, power, pharmaceuticals, metallurgy, polycrystalline silicon, new energy and other industries
Design standard: ASME B16.34
Structural length: ASME B16.5
Connecting flange: ASME B16.5
Testing and Inspection: API 598
Valve body material: WCB/CF8/CF8M/CF3/CF3M/WC6/WC9



Product Details

PRODUCT OVERVIEW

American Standard bellows gate valve is applicable to various pipelines with class150 ~ 900, PN1.0 ~ 6.0MPa, working temperature of - 29 ~ 425 ℃ (carbon steel) and - 29 ~ 500 ℃ (stainless steel). It is used to cut off or connect the medium in the pipeline. With different materials, the bellows gate valve can be applied to water, steam, oil, acetic acid, oxidizing medium, urea and other media.


PRODUCT FEATURES

1. The metal bellows, the key component of the bellows sealed gate valve, adopts automatic roll welding between the lower end and the valve stem assembly, and the upper end and the connecting plate, forming a metal barrier between the fluid medium and the atmosphere to ensure zero leakage of the valve stem.

2. The valve disc adopts conical design, and the sealing surface is linear with the medium, with better sealing performance and longer service life.

3. Double sealing design (bellows + packing). If the bellows fails, the valve stem packing will also avoid leakage and comply with international sealing standards.

4. There is a greasing joint on the valve cover, which can directly lubricate the valve rod, nut and shaft sleeve, unlike the traditional method of only lubricating the threads.

5. Ergonomically designed handwheel, long service life, easy and convenient operation, more safe and reliable.


MAIN CONNECTION SIZE AND WEIGHT（150LB）

Model

WZ41H、WZ41Y-150LB

Pressure class

150LB

Caliber

mm

15

20

25

32

40

50

65

80

100

125

150

200

250

300

in

1/2

3/4

1

1-1/4

1-1/2

2

2-1/2

3

4

5

6

8

10

12

L

108

117

127

140

165

178

190

203

229

254

267

292

330

356

381

H

200

210

250

260

290

370

398

440

490

530

580

670

760

850

950

W

120

140

140

180

200

220

260

280

300

340

400

450

450

500

500

Weight（kg）

8

9

10

15

22

30

42

55

70

100

140

180

250

350

450


MAIN CONNECTION SIZE AND WEIGHT（300LB）

Model

WZ41H、WZ41Y-300LB

Pressure class

300LB

Caliber

mm

15

20

25

32

40

50

65

80

100

125

150

200

250

300

in

1/2

3/4

1

1-1/4

1-1/2

2

2-1/2

3

4

5

6

8

10

12

L

140

152

165

178

190

216

241

283

305

381

403

419

457

502

762

H

300

210

250

260

290

370

398

440

490

530

580

670

760

850

980

W

120

140

140

180

200

220

260

280

300

340

400

450

450

500

500

Weight（kg）

9

10

12

18

25

38

53

70

88

125

175

225

310

440

560


MAIN CONNECTION SIZE AND WEIGHT（600LB）

Model

WZ41H、WZ41Y-600LB

Pressure class

600LB

Caliber

mm

15

20

25

32

40

50

65

80

100

125

150

200

250

300

in

1/2

3/4

1

1-1/4

1-1/2

2

2-1/2

3

4

5

6

8

10

12

L

165

190

216

229

241

292

330

356

432

508

559

660

787

838

889

H

200

210

250

260

290

370

398

440

490

530

580

670

760

850

980

W

120

140

140

180

200

220

260

280

300

340

400

450

450

500

500

Weight（kg）

11

13

16

24

32

50

70

90

105

165

230

300

400

570

730

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