主要技术参数:
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-16T
|
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
|
主要零件材料:
规格型号
|
阀体
|
阀瓣
|
弹簧
|
H71H-16Q、H71H-25Q
|
QT400-15
|
25
|
50CrCA
|
H71W-25H、H71W-40H
|
2Cr13
|
1Cr13
|
1Cr18Ni9Ti
|
H71W-16P、H71W-25P
|
ZG1Cr18Ni9Ti
|
1Cr18Ni9Ti
|
1Cr18Ni9Ti
|
流体力学性能:H71对夹升降式止回阀的流体阻力系数、流量系数及开启压力:
公称通径
|
阀门全开启时的流体阻力系数
|
常温下阀门全开启时的水讲E量系数
|
流体的流向
|
|||||
DN
|
NPS
|
Kvm3=/h
|
CVU.S
|
CVU.K
|
↑
|
↓
|
→
|
|
开启压力近似值KPa
|
||||||||
15
|
1/2
|
6.4
|
2.6
|
3.0
|
2.5
|
3
|
2
|
2.5
|
20
|
3/4
|
5.1
|
6.4
|
7.5
|
6.3
|
3
|
2
|
2.5
|
25
|
4
|
4.1
|
12.6
|
14.8
|
12.3
|
3
|
2
|
2.5
|
32
|
11/4
|
4.1
|
19.7
|
23.1
|
19.3
|
3
|
2
|
2.5
|
40
|
11/2
|
3.8
|
29.5
|
63.9
|
28.9
|
3
|
2
|
2.5
|
50
|
2
|
3.5
|
54.6
|
99.9
|
63.5
|
3
|
2
|
2.5
|
65
|
21/2
|
3.5
|
85.4
|
150
|
83.7
|
3
|
2
|
2.5
|
80
|
3
|
3.2
|
128
|
286
|
125
|
3
|
2
|
2.5
|
100
|
4
|
2.8
|
244
|
286
|
249
|
3
|
2
|
2.5
|
125
|
5
|
2.9
|
375
|
439
|
368
|
3
|
1
|
2.2
|
150
|
6
|
3.1
|
522
|
611
|
512
|
3
|
1
|
2.2
|
200
|
8
|
3.2
|
915
|
1070
|
897
|
3
|
1
|
2.2
|
主要连接尺寸H71W-16P不锈钢对夹式止回阀
公称通径DN
|
15
|
20
|
25
|
32
|
40
|
50
|
65
|
80
|
100
|
125
|
150
|
200
|
|
结构长度
|
长系列
|
25
|
31.5
|
35.5
|
40
|
45
|
56
|
63
|
71
|
80
|
110
|
125
|
160
|
短系列
|
16
|
19
|
22
|
28
|
31.5
|
40
|
46
|
50
|
60
|
90
|
105
|
140
|