Gas ball valve

RQ41F-16-40C.P.R

The product description

Gas ball valves can be special in natural gas, coal gas, liquefied gas and other gas and non corrosive gas pipeline control and flow control, used in natural gas, the artificial coal gas, liquefied petroleum gas long distance pipeline, city gas pipeline network, are two typical structure type of floating ball, full size design, stainless steel ball, has the advantages of simple structure, convenient installation, easy opening and closing operation, easy maintenance, Safety, reliability, high corrosion resistance.

Working principle:

Derived gas ball valve spring a column type plug type electrostatic device, namely in the spheroid and the valve stem, valve stem and valve body between the conductive spring, sphere and the static channel formed between the stem and stem, reach the purpose of removal of static electricity, avoid electrostatic spark to ignite flammable medium, ensure the safety of the system when the one thousand fire and make the soft seal loss such as ptfe ethylene, Ball valves still operate reliably and have good sealing performance to prevent fire expansion.

Product features:

1. Gas ball valve is a special ball valve specially designed for gas and liquefied gas pipelines. It has small friction between sealing surfaces in the process of opening and closing, easy maintenance and long service life

2. PTFE(polytetrafluoroethylene) and other materials as a seal, with good lubricity and elasticity, small friction with the sphere, long service life.

3. Fast opening and closing, opening and closing only need to rotate the ball 90°, convenient and fast.

4 ball valve fluid resistance is small, fully open ball channel, valve body channel and connecting pipeline sectional area is equal, and into a straight line, media through the ball valve, equivalent to flow through a straight pipe, ball valve fluid resistance in all types of valves is the least.

5. Equipped with manual, turbine drive, pneumatic, electric (explosion-proof) can achieve remote automatic control, can meet the user's various working conditions test requirements, more than DN150 ball valve uses turbine drive.

The performance specification

Nominal pressure PN

1.6

2.5

4.0

Shell test pressure PN

2.4

3.75

6.0

High pressure seal test pressure

1.76

2.75

4.4

Applicable medium

Liquefied natural gas, natural gas. Oil. Steam

Suitable temperature

-40～+150°C

Flange connection standard

JB/T:2.5.4.0MPa

Main dimensions unit：mm

DN

2.5MPa

L

H

D

D1

D2

b

f

Z-Ød

D0

15

130

82

95

65

45

16

2

4-14

130

20

140

100

105

75

55

16

2

4-14

140

25

150

104

115

85

65

16

2

4-14

150

32

165

134

135

100

78

18

3

4-18

170

40

180

140

145

110

85

18

3

4-18

230

50

200

155

160

125

100

20

3

4-18

230

65

220

180

180

145

120

22

3

8-18

300

80

250

200

195

160

135

22

3

8-18

400

100

280

222

230

190

160

24

3

8-23

400

125

320

236

270

220

188

28

3

8-25

1100

150

360

295

300

250

218

30

3

8-25

1100

200

400

342

360

310

278

34

4

12-25

1500

Nominal diameterDN/mm

Nominal pressurePN/MPa

Main external dimensions and connection dimensions

The valve weightkg

Flange dimensionmm

L

H

D

D1

D2

b

f

D6

F2

z-d

W

h

DO

Dn

50

4.0

250

345

160

125

100

20

3

88

4

4-18

300

35

48

48

64

65

270

395

180

145

120

22

3

110

4

8-18

300

49

52

66

82

80

280

425

195

160

135

22

3

121

4

8-18

350

65

58

78

95

100

300

510

230

190

160

24

3

150

4.5

8-23

350

87

68

100

117

125

325

570

270

220

188

28

3

176

4.5

8-25

400

124

68

125

144

150

350

725

300

250

218

30

3

204

4.5

8-25

400

172

72

151

172

200

400

820

375

320

282

38

3

260

4.5

12-30

450

275

88

199

223

250

450

890

445

385

345

42

3

313

4.5

13-34

550

392

102

251

278

300

500

1070

510

450

408

46

4

364

4.5

16-34

650

515

116

301

330

350

550

1320

570

510

465

52

4

422

5

16-34

750

684

120

34g

382

400

600

1450

655

585

535

58

4

474

5

16-41

850

902

142

396

432