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

Stainless steel check valve

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

Main features: Chief features :
1. In the flange bolt connection 1.Bolted bonnet
2.
Horizontal and vertical pipeline for 2. as horizontal or vertical lines
3.
Swing or lift type valve 3.Swing or lift type disc
4.
Standard flange connection 4.Flanged ends

Rotary 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

Swivel 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 Temp

适用介质

水,油品,蒸汽

Water,Oil,Steam

蒸汽,油品

Steam,Oil

丙烷,乙烯

Propane,Ethane

硝酸类

Nitric Acid

Suitable Medium

旋启式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

旋启式止回阀属性

1,本阀门通路两端须堵塞,存在干燥通风的室内。如长期存放,应经常检查防锈蚀。
2,安装前应将阀门清洗干净,并消除在运输过程中造成的缺陷。
3,安装时必须仔细核对阀门上的标志和铭牌是否符合使用要求。
4,升降式垂直瓣止回阀应安装在垂直管道上。
5,升降式水平瓣止回阀应安装在水平管道上。
6,在管线中不要使止回阀承受重量,大型的止回阀应独立支撑,使之不受管系产生的压力的影响。
7,安装止回阀时,应特别注意介质流动方向,应使介质正常流动方向与阀体上指示的箭头方向相一致,否则就会截断介质的正常流动。底阀应安装在水泵吸水管路的底端。
8,通式升降式止回阀应安装于水平管路上,立式升降式止回阀和底阀一般安装在垂直管路上,并且介质自下而上流动。
9,止回阀关闭时,会在管路中产生水锤压力,严重时会导致阀门、管路或设备的损坏,尤其对于大口管路或高压管路,故应引起止回阀选用者的高度注意。

旋启式采用的标准:

本阀门在使用过程中,介质按图示箭头方向流动。
1,当介质按规定方向流动时,阀瓣受介质力的作用,被开启介质逆流时,因阀瓣自重和阀瓣受介质反向力的作用,使阀瓣与阀座的密封面密合而关闭,达到阻止介质逆流的目的。
2,阀体及阀瓣的密封面采用不锈钢堆焊。
3,本阀门的结构长度按GB12221-1989的规定,法兰连接尺寸按JB/T79-1994的规定

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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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