|
| 型号 |
公称压力PN(MPa) |
试验压力PS(MPa) |
工作温度(℃) |
适用介质 |
| 壳体 |
密封 |
| H71W-16P |
1.6 |
2.4 |
1.76 |
≤200 |
水、蒸体、油品等 |
| H71H-25Q |
2.5 |
3.75 |
2.75 |
≤235 |
| H71W-25H |
≤300 |
| H71W-25P |
≤200 |
硝酸等腐蚀性介质 |
| H71W-40H |
4.0 |
6.0 |
4.4 |
≤300 |
水、蒸体、油品等 |
| H71W-40P |
≤200 |
硝酸等腐蚀性介质 |
|
|
| 规格型号 |
阀体 |
阀瓣 |
弹簧 |
| H71W-25H、RH71W-40H |
2Cr13 |
1Cr13 |
1Cr18 Ni9Ti |
| H71W-16P、RH71W-25P |
ZG1Cr18 Ni9Ti |
1Cr18 Ni9Ti |
1Cr18 Ni9Ti |
|
|
◆ 对夹式止回阀规格尺寸表：
|
公称通径 DN(mm)
|
L
|
D
|
|
1.6
|
2.5
|
4．0
|
|
15
|
25
|
48
|
48
|
48
|
|
20
|
31.5
|
58
|
58
|
58
|
|
25
|
35.5
|
68
|
68
|
68
|
|
32
|
40
|
80
|
80
|
80
|
|
40
|
45
|
90
|
90
|
90
|
|
50
|
56
|
105
|
105
|
105
|
|
65
|
63
|
125
|
125
|
125
|
|
80
|
71
|
140
|
140
|
140
|
|
100
|
80
|
160
|
165
|
165
|
|
125
|
110
|
190
|
195
|
195
|
|
150
|
125
|
215
|
225
|
225
|
|
200
|
160
|
270
|
285
|
290
|
|
250
|
200
|
330
|
340
|
350
|
|
300
|
250
|
385
|
400
|
415
|
|
|
|
