High Temperature Relief Valve

High Temperature Relief Valve
Product Introduction:
1.Equipped with heat radiator structure, effectively isolate hightemperature medium from spring components, protecting spring from hightemperature damage for stable performance under hightemperature service.
2.Fulllift structure provides large discharge capacity, fast opening and quick pressure relief when overpressure occurs.
3.Sealing surface hardfaced with cobaltbased alloy, excellent wearresistance, erosionresistance and hightemperature resistance, low leakage rate and long service life.
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Description
Technical Parameters

Wenzhou Starry Valve Co., Ltd. is one of the most reliable manufacturers and suppliers of high temperature relief valve in China. We are committed to providing high quality customized valves with low price. If you're going to buy bulk durable high temperature relief valve, welcome to get quotation from our factory.

 

Features

 

1.Equipped with heat radiator structure, effectively isolate high-temperature medium from spring components, protecting spring from high-temperature damage for stable performance under high-temperature service.

2.Full-lift structure provides large discharge capacity, fast opening and quick pressure relief when overpressure occurs.

3.Sealing surface hard-faced with cobalt-based alloy, excellent wear-resistance, erosion-resistance and high-temperature resistance, low leakage rate and long service life.

4.Adjustable nozzle ring, convenient to modify blow-down pressure to satisfy different process requirements.

5.Optional lifting lever for regular on-site functional inspection.

6.Strictly manufactured per API standards, stable reseating performance after pressure drops back to normal.

 

Applications

 

High temperature relief valve serves as over-pressure protection for high-temperature equipment and pipelines. It opens automatically to release excess medium under over-pressure condition and closes automatically as pressure returns to safe level, preventing equipment and piping from over-pressure damage. Widely used in power-plant boilers, superheated steam headers, thermal-oil systems, heat exchangers, reactors, petrochemical process units, high-temperature gas pipelines and high-temperature pressure vessels. Suitable media: superheated steam, thermal oil, high-temperature hot gas, high-temperature process fluid. Ideal for international EPC projects following API & ASME standards.

High temperature relief valve are used for the equipment and pipeline of the steam, etc. medium what the working temperature with C Type are less than 425°C and l fype are less than 500'C and V Type are less them 550°C. Take for extra pressure protection devices.

 

Materials For Main Parts

 

NO.

Name of part

C Materials

I Materials

V Materials

1

Body

WCB

WC6

WC9

2

Seat

20Cr13

304

12Cr1MoVA

3

Adjusting ring

20Cr13

304

304

4

Disc

20Cr13

17-4PH

17-7PH

5

Guide sleeve

20Cr13

304

304

6

Radiator

ZG230-450

ZG230-450

ZG230-450

7

Bonnet

ZG230-450

ZG230-450

ZG230-450

8

Spring

50CrVA

50CrVA

50CrVA

 

High Temperature Relief Valve Dimensions(mm)

 

Type

DN

do

D

K

g

g1

b

f

f1

Z-φd

DN

D1

K1

g3

g2

b1

f

f1'

Z-φd1

L

LI

~H

A48Y-16C
A48Y-161
A48Y-16V

40

25

150

110

 

85

18

3

 

4-18

50

165

125

 

100

20

3

 

4-18

120

115

540

50

32

165

125

 

100

20

3

 

4-18

65

185

145

 

120

20

3

 

4-18

135

120

618

65

40

185

145

 

120

20

3

 

4-18

80

200

160

 

135

20

3

 

8-18

160

140

710

80

50

200

160

 

135

20

3

 

8-18

100

220

180

 

155

22

3

 

8-18

160

150

730

100

65

220

180

 

155

20

3

 

8-18

150

285

240

 

210

24

3

 

8-23

225

175

892

150

100

285

240

 

210

24

3

 

8-23

200

340

295

 

265

26

3

 

12-23

240

235

113

200

125

340

295

 

265

26

3

 

12-23

250

405

355

 

320

30

3

 

12-26

290

210

113

A48Y-40
A48Y-401
A48Y-40V

25

16

115

85

58

65

16

2

4

4-14

32

140

100

 

78

18

2

 

4-18

110

95

429

32

20

140

100

66

78

18

2

4

4-18

40

150

110

 

85

18

3

 

4-18

115

100

42

40

25

150

110

76

85

18

3

4

4-18

50

165

125

 

100

20

3

 

4-18

120

115

540

50

32

165

125

88

100

20

3

4

4-18

65

185

145

 

120

20

3

 

4-18

135

120

618

65

40

185

145

110

120

22

3

4

8-18

80

200

160

 

135

20

3

 

8-18

160

140

710

80

50

200

160

121

135

22

3

4

8-18

100

220

180

 

155

22

3

 

8-18

160

150

730

100

65

235

190

150

160

24

3

4.5

8-23

150

285

240

 

210

24

3

 

8-23

225

175

892

150

100

300

250

204

218

30

3

4.5

8-26

200

340

295

 

265

26

3

 

12-23

240

235

1135

200

125

375

320

260

282

38

3

4.5

12-30

250

405

355

 

320

30

3

 

12-26

290

310

113

A48Y-64
A48SB-641
A48Y-641
A48SB-64l
A48Y-64V
A48SB-64V

25

16

140

100

58

78

22

2

4

4-18

32

140

100

66

78

18

2

4

4-18

110

100

429

32

20

155

110

66

82

24

2

4

4-23

40

150

110

76

85

18

3

4

4-18

130

110

42

40

25

170

125

76

95

24

3

4

4-23

50

165

125

88

00

20

3

4

4-18

135

120

540

50

32

180

135

88

105

26

3

4

4-23

65

185

145

110

120

22

3

4

818

160

130

68

50

32

180

135

88

105

26

3

4

4-23

80

200

160

121

135

22

3

4

8-18

160

145

710

65

40

205

160

110

130

28

3

4

8-23

80

200

160

121

35

22

3

4

8-18

175

160

710

80

50

215

170

121

140

30

3

4

8-23

100

235

190

150

160

24

3

4.5

8-23

175

160

730

100

65

250

200

150

168

32

3

4.5

8-26

125

270

220

176

188

28

3

4.5

8-25

220

200

800

100

65

250

200

150

168

32

3

4.5

8-26

150

300

250

24

218

30

3

4.5

8-26

220

200

82

150

100

345

280

204

240

38

3

4.5

8-34

200

375

320

260

22

38

3

4.5

12-30

280

280

1135

200

125

405

345

260

300

44

3

4.5

12-36

250

450

385

313

345

42

3

4.5

12-34

300

295

1135

A48Y-100
A48SB-100
A48Y-1001
A48SH-100l
A48Y-100V
A48SB-100V

25

16

140

100

58

78

24

2

4

4-18

32

140

100

66

78

18

2

4

4-18

110

100

429

32

20

155

110

66

82

24

2

4

4-23

40

150

110

76

85

1

3

4

4-18

130

110

42

40

25

170

125

76

95

26

3

4

4-23

50

165

125

88

100

20

3

4

418

135

120

540

50

32

195

145

88

112

28

3

4

4-26

65

185

145

110

120

22

3

4

8-18

160

130

618

50

32

195

145

88

112

28

3

4

4-26

80

200

160

12

135

22

3

4

8-18

160

145

710

65

40

220

170

110

138

32

3

4

8-26

80

200

160

121

135

22

3

4

8-8

175

160

70

80

50

230

180

121

148

34

3

4

8-26

100

235

190

150

60

24

3

4.5

8-23

175

160

730

100

65

265

210

150

172

38

3

4.5

8-30

125

270

220

176

188

28

3

4.5

8-25

220

200

800

100

65

265

210

150

172

38

3

4.5

8-30

150

300

250

204

28

30

3

4.5

8-26

220

200

892

150

100

355

290

204

250

46

3

45

2-34

200

375

320

260

282

38

3

4.5

12-30

280

280

113

200

125

430

360

260

312

54

3

4.5

12-36

250

450

385

313

345

42

3

4.5

12-34

300

295

113

A48SH-40

50

32

160

125

88

105

38

3

4

4-18

80

195

160

/

135

20

3

/

8-18

124

137

525

A48SH-100

50

32

195

145

88

112

50

3

4

4-26

80

200

160

121

135

22

3

4.5

8-18

160

145

580

A48SB-160

80

40

260

205

121

168

65

15

4

8-30

150

300

250

204

218

30

3

4.5

8-25

215

210

1175

 

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