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9525 Owensmounth Ave. Unit E
Chatsworth, CA 91311
Tel: 818.350.0423
Fax: 818.350.0424 |
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Optimum Self Drain Angles
| Valve Size |
Self Drain Angle |
| 1/4" |
41° |
| 3/8" |
30° |
| 1/2" |
25° |
| 3/4" |
18° |
| 1" |
30° |
| 1½" |
25° |
| 2" |
23° |
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Flow Co-Efficients (Cv Data)
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% Open Cv Value |
| Valve Size |
0% |
10% |
20% |
30% |
40% |
50% |
60% |
70% |
80% |
90% |
100% |
| 1/2" |
0 |
.5 |
1 |
1.4 |
1.7 |
1.9 |
1.9 |
2 |
2.3 |
2.6 |
3 |
| 3/4" |
0 |
1.1 |
2 |
3.7 |
4.3 |
4.8 |
5 |
5 |
5.4 |
6 |
6.8 |
| 1" |
0 |
1.4 |
2.1 |
4.3 |
6.9 |
8.8 |
10.9 |
13.1 |
14.2 |
15.6 |
17.3 |
| 1½" |
0 |
4 |
9.3 |
14.2 |
18.9 |
22 |
25 |
28.9 |
34 |
37.8 |
43.6 |
| 2" |
0 |
7.6 |
16.5 |
22.3 |
27.5 |
35.6 |
43.5 |
48.2 |
54.3 |
58.6 |
66 |
| Tolerance +/- 10% |
Cv Units - US gallons/minute |
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