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低温截止阀
 

 

截止阀是一种常用的截断阀,主要用来接通或截断管路中的介质,一般不用于调节流量。截止阀适用的压力、温度范围很大,但一般用于中、小口径的管道。
截止阀的主要优点:
1)与闸阀相比,截止阀的结构较简单,制造与维修都较方便。
2)密封面不易磨损、擦伤,密封性较好,寿命较长。
3)启闭时阀瓣行程较小,启闭时间较短,阀门高度较小。

主要零件材料及性能规范

主要零部件

阀体、阀盖

WCB

ZG1Cr18Ni9Ti

ZG1Cr18Ni12Mo2Ti

ZG1Cr5Mo

阀瓣

1Cr13

 

1Cr18Ni12Mo2Ti

1Cr5Mo

阀杆

1Cr13

1Cr18Ni9Ti

1Cr18Ni12Mo2Ti

1Cr5Mo

阀杆螺母

ZguAL10Fe3/球墨铸铁

填料

柔性石墨、石墨石棉盘根

主要

参数

适用介质

蒸汽、油品、水等

硝酸类

醋酸类

蒸汽、油品、水等

适用温度℃

425

200

200

425

 

 

型号

公称

通径

NPS(in)

压力级

Class

主要结构尺寸(mm)

阀体

材料

性能规范

D

D0

L

H

适用温度()

适用介质

SFD46J-41C150C

3/4"

150

99

100

117

360

LCB

-46

NH3,丙烷等

"

1"

"

108

140

127

459

"

"

"

"

2"

"

152

200

203

491

"

"

"

"

3"

"

190

250

241

565

"

"

"

"

4"

"

229

250

292

676

"

"

"

"

6"

"

279

350

406

765

"

"

"

"

8"

"

343

460

495

873

"

"

"

"

10"

"

406

560

622

1071

"

"

"

"

12"

"

483

610

699

1318

"

"

"

SFD101J-41C150C

3/4"

150

99

100

117

420

LC3

-101

乙烯等

"

1"

"

108

140

127

520

"

"

"

"

2"

"

152

200

203

550

"

"

"

"

3"

"

190

250

241

625

"

"

"

"

4"

"

229

250

292

736

"

"

"

"

6"

"

279

350

406

825

"

"

"

"

8"

"

343

460

495

943

"

"

"

"

10"

"

406

560

622

1141

"

"

"

"

12"

"

483

610

699

1388

"

"

"

SFD196J-41C150P

3/4"

150

99

100

117

420

ZGOCr18Ni9

-196

液氮、乙烯、液化天然气等

"

1"

"

108

140

127

520

"

"

"

"

2"

"

152

200

203

550

"

"

"

"

3"

"

190

250

241

625

"

"

"

"

4"

"

229

250

292

736

"

"

"

"

6"

"

279

350

406

825

"

"

"

"

8"

"

343

460

495

843

"

"

"

"

10"

"

406

560

622

1141

"

"

"

"

12"

"

483

610

699

1388

"

"

"

SFD46J-41C300C

2"

300

165

200

267

545

LCB

-46

NH3、丙烷气

"

3"

"

210

250

318

641

"

"

"

"

4"

"

254

350

356

778

"

"

"

"

6"

"

318

510

445

921

"

"

"

"

8"

"

381

510

559

959

"

"

"

"

10"

"

444

610

622

1029

"

"

"

"

12"

"

521

680

711

1268

"

"

"

SFD101J-41C300C

2"

300

165

200

267

565

LC3

-101

乙烯等

"

3"

"

210

250

318

671

"

"

"

"

4"

"

254

350

356

808

"

"

"

"

6"

"

318

510

445

51

"

"

"

"

8"

"

381

510

559

989

"

"

"

"

10"

"

444

610

622

1059

"

"

"

"

12"

"

521

680

711

1298

"

"

"

SFD196J-61C600P

3/4"

600

35

140

133

420

ZGOCr18Ni9

-196

液氮、乙烯、液化天然气等

"

1"

"

41

180

127

487

"

"

"

"

11/2"

"

70

180

241

549

"

"

"

"

2"

"

165

250

292

678

"

"

"

SFD196J-61C600P

3"

600

210

300

356

838

ZGOCr18Ni9

-196

液氮、乙烯、液化天然气等

"

4"

"

273

400

432

949

"

"

"

"

6"

"

356

610

559

1249

"

"

"