焊接旋启式止回阀

H44H、H44Y型 PN16~PN250旋启式止回阀适用于压力1.6~25MPa,工作温度 -29~+550℃的石油、化工、制药、化肥、电力行业等各种工况的管路上,适用介质为水、油品、蒸汽、酸性介质等。


【产品特点】
H44H、H44Y型旋启式止回阀是靠管路中介质本身的流动产生的力而自动开启和关闭的,属于一种自动阀门。止回阀用于管路系统,其主要作用是防止介质倒流、防止泵及其驱动电机机反转,以及容器内介质的泄放。止回阀还可用于给其中的压力可能升至超过主系统压力的辅助系统提供补给的管路上。



Products and services that meet fluid control requirements

Each process, each facility, and each environmental constraint has its own special requirements. Therefore, Dongyan offers a comprehensive range of products covering different performance levels, pressures, different functions and different materials.

Detail

用途与性能规范

【性能参数】

型号

H44H-16C~250

H44W-16P~250

工作压力(MPa)

1.6~25

适用温度(℃)

≤425

≤550

适用介质

水、蒸汽、油品

弱腐蚀性介质

材料

阀体、阀盖、阀瓣

碳素钢

铬镍钛不锈钢

密封面

碳钢堆焊铁基合金

本体密封


【主要外形和连接尺寸】

公称通径DN

主要外形尺寸和连接尺寸

L

D

D1

D2

b

Z-d

H

H44H-16C H44W-16C H44W-16P H44W-16R H44W-16I

25

160

115

85

65

16

4-14

100

32

180

135

100

78

16

4-18

105

40

200

145

100

85

16

4-18

115

50

230

160

125

100

16

4-18

135

65

290

180

145

120

18

4-18

142

80

310

195

160

135

20

8-18

165

100

350

215

180

155

20

8-18

180

125

400

245

210

185

22

8-18

210

150

480

280

240

210

24

8-23

233

200

500

335

295

265

26

12-23

304

250

550

405

355

320

30

12-25

348

300

650

460

410

375

30

12-25

390

350

750

520

470

435

34

16-25

430

400

850

580

525

485

36

16-30

468

H44H-25 H44W-25 H44W-25P H44W-25R H44W-25I

25

160

115

85

65

16

4-14

100

32

180

135

100

78

16

4-18

105

40

200

145

110

85

16

4-18

115

50

230

160

125

100

20

4-18

160

65

290

180

145

120

22

8-18

175

80

310

195

160

135

22

8-18

185

100

350

230

190

160

24

8-23

220

125

400

270

220

188

28

8-25

248

150

480

300

250

218

30

8-25

276

200

550

360

310

278

34

12-25

350

250

650

425

370

332

36

12-30

410

300

750

485

430

390

40

16-30

430

350

850

550

490

448

44

16-34

518

400

950

610

550

505

48

16-34

560


【结构图片】

升降-旋启止回阀.jpg

Product Application Scope

These devices are suitable for accurately controlling media such as gases, liquids, steam, etc., and maintaining process parameters such as pressure, flow rate, temperature, and liquid level at given values. Especially suitable for work environments where the allowable pressure difference is small and the allowable leakage is also small, and the pressure difference is not significant.

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