阀门选型
Valve Selections
关断性能
Shut-Off Capabilities
金属阀座
Metal Seats |
符合美国阀门及配件工业制造商标准化协会MSS-SP-81标准和美国纸浆与造纸工业技术协会TAPPI TIS 405-8标准
Meet MSS-SP-81 and TAPPI TIS 405-8 |
压力等级
Pressure Ratings
通径DN50~DN600
2"-24" DN50-DN600 |
150 PSIG冷水工作压力(1035 kPa)
150 PSIG C.W.P. (1035 kPa) |
通径DN750~DN900
30"-36" DN750-DN900 |
75 PSIG冷水工作压力(520 kPa)
75 PSIG C.W.P. (520 kPa) |
通径DN1050~DN1200
42"-48" DN1050-DN1200 |
40 PSIG冷水工作压力(345 kPa)
40 PSIG C.W.P. (345 kPa) |
Cv/Kv值,F系数,开启面积
Cv/Kv Values, K Factors, Area of Opening
阀门通径
Valve Size |
Cv*/Kv*
100%开启
100% Open |
K系数**
K factor** |
开启面积
Area of
Opening
cm2/in2 |
DN50
2" |
300
259 |
0.20 |
20
3.1 |
DN80
3" |
675
584 |
0.18 |
46
7.1 |
DN100
4" |
1200
1038 |
0.17 |
81
12.6 |
DN125
5" |
1875
1622 |
0.16 |
127
19.6 |
DN150
6" |
2700
2336 |
0.15 |
183
28.3 |
DN200
8" |
4795
4148 |
0.14 |
325
50.3 |
DN250
10" |
7494
6479 |
0.13 |
506
78.5 |
DN300
12" |
10790
9334 |
0.13 |
730
113.1 |
DN350
14" |
13150
11375 |
0.13 |
890
137.9 |
DN400
16" |
17420
15069 |
0.12 |
1179
182.7 |
DN450
18" |
22290
19282 |
0.12 |
1688
261.6 |
DN500
20" |
27760
24014 |
0.12 |
1878
291.0 |
DN600
24" |
40495
35030 |
0.11 |
2740
424.6 |
DN750
30" |
64090
55441 |
0.11 |
4336
672.0 |
DN900
36" |
93080
80519 |
0.10 |
6297
975.9 |
* |
Cv = 在压降1 psi下的流量,单位为美制加仑/分钟 Cv
= Flow in GPM of water at 1 psi pressure drop.
Kv = 在压降100 kPa下的流量,单位为立方米/小时
Kv = Flow in m3/hr. of water
at 100 kPa pressure drop. |
** |
根据下列公式可以用来计算的管道有效长度:
The equivalent length of pipe may be calculated
according to the following formula: |
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在此
Where |
L = 管道有效长度,单位为英尺 L = Equivalent length
of pipe in feet
K = 系数 - 阀门的阻流系数 K = factor - Resistance
coefficient of valve
D = 管道直径,单位为英尺 D = Pipe diameter in feet
f = 摩擦系数,与管道类型有关
f = Friction factor, relating to type of pipe |
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