关闭性能
Shut-Off Capabilities
弹性阀座
Resilient Seats |
无泄漏关闭/无滴漏关闭
Leak tight/drip tight |
金属阀座
Metal Seats |
符合MSS SP-81和TAPPI TIS 405-8标准
Meet MSS-SP-81 and TAPPI TIS 405-8 |
压力等级
Pressure Ratings
DN50~DN900
2-36" (DN50-DN900) |
150 psi冷工作压力(1030 kPa)
150 psi C.W.P. (1030 kPa) |
注：
Note: |
CRW阀座的阀门压力等级局限于50 psi (350 kPa)。请联系美国DeZurik（德朱瑞克）公司并告知应用环境。
Valves with CRW seats are limted to 50 psi (350
kPa). Contact DeZurik with service conditions. |
流量系数值，K系数，开启面积
Cv/Kv Values, K Factors, Area of Opening
阀门通径
Valve Size |
Kv*
Cv*
100%开启
100% Open |
K系数
K Factor
** |
开启面积
平方厘米
Area of
Opening
cm2
in2 |
DN50
2" |
259
300 |
0.20 |
20
3.1 |
DN80
3" |
584
675 |
0.18 |
46
7.1 |
DN100
4" |
1038
1200 |
0.17 |
81
7.1 |
DN125
5" |
1622
1875 |
0.16 |
127
19.6 |
DN150
6" |
2336
2700 |
0.15 |
183
28.3 |
DN200
8" |
4148
4795 |
0.14 |
325
50.3 |
DN250
10" |
6479
7494 |
0.13 |
506
78.5 |
DN300
12" |
9334
10790 |
0.13 |
730
113.1 |
DN350
14" |
11375
13150 |
0.13 |
890
137.9 |
DN400
16" |
15069
17420 |
0.12 |
1179
182.7 |
DN450
18" |
19282
22290 |
0.12 |
1688
261.6 |
DN500
20" |
24014
27760 |
0.12 |
1878
291.0 |
DN600
24" |
35030
40495 |
0.11 |
2740
424.6 |
DN750
30" |
55441
64090 |
0.11 |
4336
672.0 |
DN900
36" |
80519
93080 |
0.10 |
6297
975.9 |
| * |
Cv = 在1 psi压降下，每分钟流过的美制加仑水流量。
Cv = Flow in GPM of water at 1 psi pressure
drop.
Kv = 在100 kPa压降下，每小时流过的立方米水流量。
Kv = Flow in m3/hr. of water
at 100 kPa pressure drop. |
| ** |
可以根据下列公式计算管道的有效长度：
The equivalent length of pipe may be calculated
according to the following formula: |
|
| |
|
|
|
在此：
Where |
L = 管道有效长度，英尺
L = Equivalent length of pipe in feet
K = 系数 - 阀门的阻滞系数
K = factor - Resistance coefficient of valve
D = 管道直径，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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