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welded ball valve

Five Advantages:
1. integral seamless steel tube pressed full-auto welded without leaking outward.
2. PTFE+25% carbon fiber and disc spring feely compensating structure zero leakage.
3. can be directly buried without need of a high ground well,saving the engineering cost.
4. both valve and pipeline are made of the same material, without the condition of uneven stress.
5. in multiple connection combination, for use with special working conditions.
This series of products are reliable sealing performance, maintenance-free for 20 years, switch torque light,can be installed in heat transfer stations, district heating pipe network, branch pipes, heat exchanger unit, heat transfer equipment or ancillary equipment connected to other.use for cut off . The main use of the urban heat, city gas, city water supply and drainage lines

Specification:

NO.

Name

Material

1

Body

ASTM, A53

2

Ball

AISI 304

3

End piece

ASTM A53

4

Seat

25% C +PTFE

5

Stem-s

AISI304

6

Spring

SM20C

7

O-ring

Viton

8

DU-bushing

Spcb+ptfe

9

Stem neck

AISI 1020(SM20C)

10

Thrust bearing

PTFE

Size

NPS

A

B

L

D

D1

D2

GB      EN

DN15

3/8

129

64

210

15

18

21.3

42

DN20

3/4

129

64

230

15

25

26.7

42

DN25

1

159

76

230

20

32

33.4

48

DN32

11/4

159

85

260

25

42

42.2

60

DN40

11/2

230

95

300

32

48

48.3

76

DN50

2

230

100

300

40

57

60.3

89

DN65

21/2

300

159

300

50

76

76.1

114

DN80

3

300

170

300

65

89

88.9

140

DN100

4

450

192

325

80

108

114.3

185

DN125

5

450

208

325

100

133

141.3

216

DN150

6

450

241

350

125

159

168.3

219

Size

NPS

A

B

L

D

D1

D2

GB      EN

DN15

3/8

129

90

210

15

18

21.3

42.7

DN20

3/4

159

103

230

20

25

26.7

48

DN25

1

159

107

260

25

32

33.4

60

DN32

11/4

230

120

260

32

42

42.2

76

DN40

11/2

230

126

300

40

48

48.3

76

DN50

2

230

177

300

50

57

60.3

114

DN65

21/2

300

186

300

65

76

76.1

140

DN80

3

400

210

300

80

89

88.9

165

DN100

4

400

214

325

100

108

114.3

216

DN125

5

450

220

350

125

133

141.3

219

DN150

6

450

280

490

150

159

168.3


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