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Lift flange check valve

The release date:[2017-08-07]     hits

Lifting flange check valve

product information

Key Features: Chief features :

1. the middle flange bolts 1.Bolted bonnet

2. Horizontal and vertical pipelines 2.For horizontal or vertical lines
3. Swing or lift type discs 3.Swing or lift type disc
4. Standard flange connection 4.Flanged ends

Lifting Flange Check Valve Properties

1, the valve ends must be blocked at both ends, there is dry and ventilated room. Such as long-term storage, should always check the anti-corrosion.
2, the installation should be cleaned before the valve, and eliminate the defects caused in the transport process.
3, the installation must be carefully checked on the valve signs and nameplate is in line with the use requirements.
4, lift vertical flap check valve should be installed in the vertical pipe.
5, lift the level of the valve check valve should be installed in the horizontal pipe.
6, in the pipeline do not make the check valve to bear the weight, large check valve should be independent support, so that the pressure generated by the impact of piping.
7, the installation of check valve, the media should pay special attention to the direction of flow, the media should be the normal flow direction and the direction of the arrow on the valve body is consistent, otherwise it will cut off the normal flow of media. The bottom valve should be installed at the bottom of the pump suction line.
8, the general type of lift check valve should be installed in the horizontal pipe, vertical lift check valve and bottom valve is generally installed in the vertical pipe, and the media from bottom to top flow.
9, the check valve is closed, will produce water hammer in the pipeline pressure, serious will lead to damage to the valve, pipe or equipment, especially for large mouth or high pressure pipeline, it should cause the check valve selection High attention.

★ Lifting Flange Check Valve Standard:

The valve in the use of the process, the media flow direction in the direction of the arrow.
1, when the media flow in the specified direction, the valve by the role of medium force, was opened when the media countercurrent, due to the valve self-weight and the valve by the role of the reverse force of the media, so that the valve flap and seal the sealing surface And close, to prevent the purpose of the media countercurrent.
2, the valve body and the sealing surface of the valve using stainless steel surfacing.
3, the length of the structure of the valve according to the provisions of GB12221-1989, flange connection size according to JB / T79-1994

Lifting Flange Check Valve Product Specification

Product specification

Product

Specification

Design specification

Design Spec

Structure length

Face to Face

Connecting flange

Flange End

Test and test

Test & Check

Pressure - temperature

Pressure-Temp

Product Identification

Marking

Supply specification

Supply

GB / T 12236

GB / T 12235

GB / T 12221

JB / T 79

JB / T 9092

GB / T 9131

GB / T 12220

JB / T 7928

Lifting Flange Check Valve Main Parts Material Main Part Material


Part Name

Body Material

Part Name

Body / bonnet

WCB

WC6

LCB

CF8M

Body / Bonnet

Discs

25

1Cr18Ni9Ti

1Cr18Ni9Ti

1Cr18Ni9Ti

Disk

Around the axis

WCB

25Cr2MoV

LCB

CF8M

Swing Arm

Gasket

18-8 flexible graphite / 18-8Flexible

Graphite Gasket

bolt

35 / 35CrMo

25Cr2MoV

1Cr18Ni9

1Cr18Ni9

Bolt

proper temperature

-29 to 425 ° C

-29 ~ 550 ℃

-46 to 350 ° C

-40 to 550 ° C

Suitable for Temp

Applicable media

Water, oil, steam

Water, Oil, Steam

Steam, oil

Steam, Oil

Propane, ethylene

Propane, Ethane

Nitric acid

Nitric Acid

Suitable Medium

升降式法兰止回阀主要外形和连接尺寸Main External And Connection



主要外形和主要连接尺寸Main External And Connection Dimension

公称通径

DN

主要外形尺寸和连接尺寸(mm)Main external and connection dimensions

重量

WT(kg)

L

D

D1

D2

b

Z-Φd

H

H41H-16C H41W-16C H41W-16P H41W-16R H41W-16I

15

130

96

65

45

14

4-Φ14

77

3

20

150

105

75

55

14

4-Φ14

77

4

25

160

115

85

65

14

4-Φ14

80

5

32

180

135

100

78

16

4-Φ18

85

7

40

200

145

110

85

16

4-Φ18

95

9

50

230

160

125

100

16

4Φ-18

105

10

65

290

180

145

120

18

4-Φ18

120

20

80

310

195

160

135

20

8-Φ18

130

30

100

350

215

180

155

20

8-Φ18

140

39

125

400

245

210

185

22

8-Φ18

155

50

150

480

280

240

210

24

8-Φ23

180

70

200

600

335

295

265

26

12-Φ23

215

161

250

730

405

355

320

32

12-Φ25

260

251

300

850

460

410

375

34

12-Φ25

315

395

H41H-25 H41W-25 H41W-25P H41W-25R H41W-25I

15

130

95

65

45

16

4-Φ14

100

3.4

20

150

105

75

55

16

4-Φ14

105

5

25

160

115

85

65

16

4-Φ14

120

5.7

32

180

135

100

78

18

4-Φ18

130

9.1

40

200

145

110

85

18

4-Φ18

135

11.8

50

230

160

125

100

20

4-Φ18

149

14.4

65

290

180

145

120

22

8-Φ18

160

23

80

310

195

160

135

22

8-Φ18

169

30

100

350

230

190

160

24

8-Φ23

194

44

125

400

270

220

188

28

8-Φ25

222

65

150

480

300

250

218

30

8-Φ25

255

99

200

600

360

310

278

34

12-Φ25

305

190

250

730

425

370

332

36

12-Φ30

355

315

300

850

485

430

390

40

16-Φ30

410

450

Contact us

Pursue the high quality of products and services, strive to realize the sincere and effective communication with customers, constantly dream, run and take off

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Post box: rtv@zjrtfm.com
The ministry of foreign trade:0577-8588 8220 / 0577-8588 8221
E-mail: valve@zjrtfm.com / monica@zjrtfm.com
Web site: www.dekainu.com
Address:Block B-16, Airport New Area, Longwan District, Wenzhou City, Zhejiang Province (Jinhai Erdao 11 Road)

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