蝶式对夹止回阀
面议
标准规范：
设计制造标准：JB/T 8937
结构长度标准：GB/T 12221-2005
连接法兰标准：GB/T 9113
压力温度等级：GB/T 12224-2005
试验检验标准：GB/T 13927-2008
|
阀门全开启 |
常温下阀门全开启时的水流量系数 |
流体的流向 |
|||||
|
DN |
NPS |
Kv(m3/h) |
Cv(U.S) |
Cv(U.K) |
↑ |
→ |
|
|
开启压力近似值KPa |
|||||||
|
50 |
2 |
2.6 |
63 |
74 |
62 |
2 |
1 |
|
65 |
21/2 |
2.4 |
109 |
128 |
107 |
2 |
1 |
|
80 |
3 |
2.3 |
172 |
201 |
169 |
2 |
1 |
|
100 |
4 |
2.0 |
289 |
338 |
283 |
2 |
1 |
|
125 |
5 |
1.8 |
476 |
557 |
466 |
2 |
1 |
|
150 |
6 |
1.5 |
750 |
878 |
735 |
2 |
1 |
|
200 |
8 |
1.3 |
1432 |
1675 |
1403 |
2 |
1 |
|
250 |
10 |
1.2 |
2330 |
2726 |
2283 |
2 |
1 |
|
300 |
12 |
1.0 |
3676 |
4301 |
3602 |
2 |
1 |
|
350 |
14 |
0.9 |
5274 |
6171 |
5169 |
2 |
1 |
|
400 |
16 |
0.8 |
7306 |
8548 |
7160 |
3 |
1 |
|
450 |
18 |
0.8 |
9246 |
10818 |
9061 |
3 |
1 |
|
500 |
20 |
0.8 |
11415 |
13356 |
11187 |
3 |
1 |
|
600 |
24 |
0.7 |
17573 |
20560 |
17222 |
3 |
1 |
|
700 |
28 |
0.7 |
23919 |
27985 |
23441 |
4 |
1 |
|
750 |
30 |
0.7 |
27458 |
32126 |
26909 |
4 |
1 |
|
800 |
32 |
0.7 |
31241 |
36552 |
30616 |
4 |
1 |
|
900 |
36 |
0.7 |
39539 |
46261 |
38748 |
4 |
1 |
|
1000 |
40 |
0.7 |
48814 |
57112 |
47838 |
4 |
1 |
|
1050 |
42 |
0.7 |
53817 |
62966 |
52741 |
4 |
1 |
|
1200 |
48 |
0.7 |
70292 |
82242 |
68886 |
4 |
1 |
