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  •  Ammonia use Angle type stop valve

Ammonia use Angle type stop valve

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Product description

The product description

The sealing surface of ammonia stop valve is babbitt alloy, tetrafluoron, nylon and so on. Long service life. Is installed in the refrigeration system equipment or pipeline, to connect and cut off the refrigerant flow channel, in the process of use in the temperature range change environment can naturally achieve chemical treatment performance. Suitable for opening and closing of ammonia, ammonia liquid medium and liquefied gas pipeline with temperature of -40~+150 degrees Celsius. Mainly suitable for refrigeration, refrigeration, chemical, petroleum, food, smelting, liquefied gas and other units.

Working principle:

The opening and closing parts of J44B Angle ammonia globe valve are plug shaped disc, the sealing surface is flat or conical, and the disc moves in a straight line along the center line of the fluid. Stem movement form, there are lifting rod type (stem lifting, handwheel not lifting), there are lifting rotary rod type (hand wheel or stem rotating lifting together, nut in the valve body).

Globe valve is only suitable for full open and full closed, not allowed for adjustment and throttling.

Product features:

The middle flange is square structure, and the valve stem is connected by inter-rod.

The sealing surface of the valve body is ball convex, and the valve foot is sealed by line.

Babbitt alloy sealing surface, good sealing performance, long service life.

Main parts and materials

Part name

Valve body, valve cover

The seat

Packing

Packing gland, stem

Gasket

AJ44B/F-25C

Cast steel

Babbitt/ptfe

Polytetrafluoroethylene

Carbon steel

Teflon

AJ44B/F-25P

Stainless steel

Babbitt/ptfe

Polytetrafluoroethylene

Stainless steel

Teflon

AJ44B/F-25

Gray cast iron

Babbitt/ptfe

Polytetrafluoroethylene

Carbon steel

Teflon

The product specification

Nominal pressure

Test pressure

Applicable medium

Suitable temperature


PN(MPa)

PS(MPa)

(℃)



2.5

3.8

Ammonia, ammonia liquid NH3

Babbitt alloy -40℃+150℃

Four fluorine - 40 ℃ to + 200 ℃

4.0

6.4




Main dimensions AJ44B-25  AJ44B/F-25P  AJ44B/F-25C

 

Nominal diameter                                          Size

DN(mm)

L

D

D1

D2

D4

b

f

f1

Z-φd

Close

Open

D3














10

65

90

60

40

35

16

2

4

4-φ14

165

185

110

15

65

95

65

45

40

16

2

4

4-φ14

165

185

110

20

75

105

75

55

51

18

2

4

4-φ14

170

200

120

25

80

115

85

65

58

18

2

4

4-φ14

197

210

120

32

90

135

100

78

66

20

3

4

4-φ18

199

213

140

40

100

145

110

85

76

20

3

4

4-φ18

248

264

160

50

115

160

125

100

88

22

3

4

4-φ18

265

295

180

65

145

180

145

120

110

24

3

4

8-φ18

310

349

220

80

155

195

160

135

121

26

3

4

8-φ18

340

357

240

100

175

230

190

160

150

30

3

4.5

8-φ23

380

413

280

125

200

270

220

188

176

32

3

4.5

8-φ25

430

451

320

150

240

300

250

218

204

32

3

4.5

8-φ25

505

492

360

200

300

360

310

278

260

34

3

4.5

12-φ25

550

806

400

250

325

425

370

335

31

36

3

4.5

12-φ30

730

880

450

300

375

485

430

390

364

40

3

4.5

16-φ30

0

995

550