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 The high temperature high school presses the check valve
Product Name:
The high temperature high school presses the check valve
Description:


高温高中压止回阀

型号: H41Y 口径: DN15-DN350
压力: 1.6MPA-16MPA 材质: 铬钼钢

止回阀(cheek valve):止回阀又称单向阀或逆止阀,其作用是防止管路中的介质倒流。水泵吸水关的底阀也属于止回阀类。

启闭件靠介质流动和力量自行开启或关闭,以防止介质倒流的阀门叫止回阀。止回阀属于自动阀类,主要用于介质单向流动的管道上,只允许介质向一个方向流动,以防止发生事故。

止回阀按结构划分,可分为升降式止回阀旋启式止回阀和蝶式止回阀三种。升降式止回阀可分为立式和卧式两种。旋启式止回阀分为单瓣式、双瓣式和多瓣式三种。蝶式止回阀为直通式、以上几种止回阀在连接形式上可分为螺纹连接、法兰连接和焊接三种。

型号

公称压力PN(Mpa)

试验压力Ps(Mpa)

适用温度(oc)

适用介质

密度

气密封

壳体

H41Y-25I

2.5

2.75

0.6

3.75

≤550

蒸汽、水、油品等

H41Y-40I

4.0

4.4

0.6

6.0

H41Y-64I

6.4

7.04

0.6

9.6

H41Y-100I

10.0

11.0

0.6

15.0

H41Y-25P

2.5

2.75

0.6

3.75

≤150

弱腐蚀性介质

H41Y-40P

4.0

4.4

0.6

6.0

H41Y-64P

6.4

7.04

0.6

9.6

H41Y-100P

10.0

11.0

0.6

15.0

主要零件材料

零件

阀门、阀盖、阀瓣

阀体、阀瓣密封面

垫片

螺栓

材料

I

铬钼钢

硬质合金

钢带石棉缠绕式垫片

铬钼钒钢

P

铬钼钛不锈钢

硬质合金

聚四氟乙烯

不锈钢

主要尺寸及重量

公称通径DN(mm)

尺寸(mm)

重量(kg)

L

D

D1

D2

·b

f

Z –φd

H

D3

15

130

95

65

45

16

2

4-φ14

100

-

5

20

150

105

75

55

16

2

4 –φ14

105

-

7

25

160

115

85

65

16

2

4 –φ14

115

110

9

32

190

135

100

78

18

2

4 –φ18

120

120

10

40

200

145

110

85

18

3

4-φ18

140

135

15

50

230

160

125

100

20

3

4-φ18

150

150

20

65

290

180

145

120

22

3

8-φ18

160

175

25

80

310

195

160

135

22

3

8-φ18

175

200

32

100

350

230

190

160

24

3

8-φ23

200

230

57

125

400

270

220

188

28

3

8-φ25

230

273

-

150

480

300

250

218

30

3

8-φ25

265

330

-

200

600

360

310

278

34

3

12-φ25

300

365

-


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