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NKZ61H welding manual vacuum isolation valve


NKZ61H welding manual vacuum isolation valve
Stable quality: implement quality monitoring throughout the process, meticulous and comprehensive detection!

Reasonable price: efficient internal cost control, reducing expenses and benefiting customers!

Fast delivery: advanced production lines, sufficient stocking, shortening the delivery time!
Sales: 021-31007323
Fax: 021-333321522
Technology: 021-31007323

product manual Pledge Order process

Product name : NKZ61H welding electric vacuum isolation valve

Product model :

NKZ61H

Applicable medium :

Water, steam or air   Connection Type: Flange, welding
Applicable temperature :

           425 550 425 and 550

  Nominal diameter : DN50-DN700

Common materials :

铬钼钢 Carbon steel, chrome molybdenum steel

Technical consultation :

021-31007323

I. Main structural features and uses:

The main body of this series of valve adopts cast and forged structure, and it has semi-forced two-way bees with parallel double sealing pairs. The sealing surface moves in place and the wedge-shaped tight movement works in steps to achieve zero leakage. The frictional force of the sealing surface is small, the opening and closing is light, and the sealing surface wear is automatically compensated. Simple structure, compact, convenient maintenance and long service life. The bonnet packing chamber is provided with a vacuum sealing structure, which has the function of self-expansion and compression, and each side is sealed with a high-strength expansion material, which completely isolates the system from the atmosphere and has good system air tightness. This series of valve connection types are divided into flange and welding. There are two driving modes: manual and electric.

The valve and NKZ961H welding electric vacuum isolation valve 425 ℃和≤ 550 ℃,工作介质为水、蒸汽或空气的官路上,作为启闭装置,尤其适用于火电厂汽机冷凝和真空负压系统,起真空隔离密封作用。 It is suitable for official roads with working temperature ≤ 425 ℃ and ≤ 550 ℃, and the working medium is water, steam or air. As an on-off device, it is especially suitable for the condensing and vacuum negative pressure systems of steam turbines in thermal power plants.

NKZ61H焊接手动真空隔离阀NKZ61H焊接手动真空隔离阀结构图

2. Main performance specifications and trial pressure:

Nominal pressure
PN / MPa

test pressure

Shell strength test

Upper seal test

Seal test

2.5

3.8

2.8

2.8

4.0

6.0

4.4

4.4

6.4

.6 9 .6

7.0

7.0

10.0

15.0

11.0

11.0

Application range:

product type

Applicable medium

/℃ Applicable temperature / ℃

61 H- C NKZ 61 H- C type
61 H- C NKZ9 61 H- C type

Water, steam, air

≤425

61 H - (YI ) NKZ 61 H- (YI )
61 H - (YI ) NKZ9 61 H- (YI )

Water, steam, air

≤550

主要尺寸及重量 Fourth, the main size and weight

Nominal diameter
DN / mm

Nominal pressure
PN / MPa

/mm Main dimensions and connection dimensions / mm

weight
kg

L

H

D

D1

D2

b

f

zd

Do

50

1.6

250

345

160

125

100

16

3

48

250

28

65

270

395

180

145

120

18

3

48

250

40

80

280

425

195

160

135

20

3

88

300

58

100

300

510

215

180

155

20

3

88

300

75

125

325

570

245

210

185

twenty two

3

88

350

110

150

350

725

280

240

210  

twenty four

3

8-23

350

150

200

400

820

335

295

265

26

3

12-23

400

223

250

450

890

405

355

320

30

3

12-25

450

326

300

500

1070

460

410

375

30

3

12-25

550

432

350

550

1320

520

470

435

34

4

16-25

600

572

400

600

1450

580

525

485

36

4

16-30

650

740

450

650

1560

640

585

545

40

4

20-30

700

955

500

700

1720

705

650

608

44

4

20-34

750

1195

600

800

1880

840

770

718

48

5

20-41

800

1455

700

900

2085

900

840

788

50

5

24-41

850

2110

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