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Products Name:GB Standard Flanged Gate Valve

Flange valve manufactured by LiangGong Valve Group Co., Ltd. is widely used in petroleum chemical industry, thermal power plant and other oil products, water vapor pipeline to connect or cut off the pipeline medium opening and closing device

Product Description

Product Usage
Flange valve manufactured by LiangGong Valve Group Co., Ltd. is widely used in petroleum chemical industry, thermal power plant and other oil products, water vapor pipeline to connect or cut off the pipeline medium opening and closing device
 
Features
1, compact structure, reasonable design, good valve rigidity, smooth passage, small flow coefficient
2, the sealing surface of stainless steel and carbide, long life
3, Flexible graphite packing, reliable sealing, light and flexible operation
4, the driving mode is manual, pneumatic, electric, gear drive
5, the structure of the elastic wedge single gate, rigid wedge single gate double gate type
 
Executive Standard
Design specifications: GB / T 12234
Structure length: GB / T 12221
Connecting flange: JB / T 79.1
Test and inspection: JB / T 9092
Pressure - Temperature: GB / T 9131
Product Identification: GB / T 12220
 
Performance parameters

Nominal pressurePN(MPa)

case

test pressure(MPa)

Sealed

Sealed (liquid)

Seal (gas)

1.6

2.4

1.8

0.6

1.8

2.5

3.8

2.8

0.6

2.8

4.0

6.0

4.4

0.6

4.4

6.4

9.6

7.0

0.6

7.0

10.0

15.0

11.0

0.6

11.0

16.0

24.0

18.0

0.6

18.0


Suitable medium and applicable temperature

Shell material

Suitable media

Applicable temperature (℃)

Carbon steel (C type)

Water, steam, oil

≤425

Chromium nickel titanium steel (P type)

Nitric acids

≤200

Chrome nickel molybdenum titanium steel (R type)

Acetic acid

≤200

Chrome-molybdenum steel (type I)

Water, steam, oil

≤550

The main part material

Body, bonnet

Valve plate, seat

Valve stem

Stem nut

filler

Handwheel

Carbon steel

High-quality carbon steel + carbide or stainless steel

Chrome stainless steel

Aluminum bronze

Graphite asbestos packing

Malleable iron

Chromium nickel titanium steel

Stainless steel, stainless steel + cemented carbide

Chrome nickel-titanium stainless steel

Aluminum bronze

Teflon

Malleable iron

Chromium nickel molybdenum titanium steel

Stainless steel, stainless steel + cemented carbide

Chrome nickel-titanium stainless steel

Aluminum bronze

Teflon

Malleable iron

Chrome-molybdenum steel

Alloy steel + Carbide

Chrome-molybdenum steel

Aluminum bronze

Flexible asbestos

Malleable iron

The main shape and connection dimensions


Nominal diameter

The main dimensions and connection dimensions

L

D

D1

D2

b

Z-d

H

D0

Z41H-16C

15

130

95

65

45

14-2

4-Φ14

170

120

20

150

105

75

55

14-2

4-Φ14

190

140

25

160

115

85

65

14-2

4-Φ14

205

160

32

180

135

100

78

16-2

4-Φ18

270

180

40

200

145

110

85

16-3

4-Φ18

310

200

50

250

160

125

100

16-3

4-Φ18

358

240

65

265

180

145

120

18-3

4-Φ18

373

240

80

280

195

160

135

20-3

8-Φ18

435

280

100

300

215

180

155

20-3

8-Φ18

500

300

125

325

245

210

185

22-3

8-Φ18

614

320

150

350

280

240

210

24-3

8-Φ23

674

360

200

400

335

295

265

26-3

12-Φ23

811

400

250

450

405

355

320

30-3

12-Φ25

969

450

300

500

460

410

375

30-3

12-Φ25

1145

580

350

550

520

470

435

34-4

16-Φ25

1280

640

400

600

580

525

485

36-4

16-Φ30

1452

640

Z41H-25

15

130

95

65

45

16-2

4-Φ14

170

120

20

150

105

75

55

16-2

4-Φ14

190

140

25

160

115

85

65

16-2

4-Φ14

205

160

32

180

135

100

78

18-2

4-Φ18

270

180

40

200

145

110

85

18-3

4-Φ18

310

200

50

250

160

125

100

20-3

4-Φ18

358

240

65

265

180

145

120

22-3

8-Φ18

373

240

80

280

195

160

135

22-3

8-Φ18

435

280

100

300

230

190

160

24-3

8-Φ23

500

300

125

325

270

220

188

28-3

8-Φ25

614

320

150

350

300

250

218

30-3

8-Φ25

674

360

200

400

360

310

278

34-3

12-Φ25

811

400

250

450

425

370

332

36-3

12-Φ30

969

450

300

500

485

430

390

40-4

16-Φ30

1145

580

350

550

550

490

448

44-4

16-Φ34

1280

640

400

600

610

550

505

48-4

16-Φ34

1452

640

 

Structure picture