User Guide

Technical Instructions Flowrite 599 Series Two-Way Valves, 1/2 to 2-Inch, Bronze Body, ANSI 250
Document Number 155-184P25
August 25, 2009
Page 6 Siemens Industry, Inc.
Table 3. Maximum Water Capacity - U.S. Gallons per Minute.
Valve
Size
in
inches
Pressure Differential - psi
Cv\1 2 3 4 5 6 8 10 15 20 25 30 40 50 60 75
1/2
1.0 1.4 1.7 2.0 2.2 2.5 2.8 3.2 3.9 4.5 5.0 5.5 6.3 7.1 7.8 8.7
1.6 2.3 2.8 3.2 3.6 3.9 4.5 5.1 6.2 7.2 8.0 8.8 10.1 11.3 12.4 13.9
2.5 3.5 4.3 5.0 5.6 6.1 7.1 7.9 97 11.2 12.5 13.7 15.8 17.7 19.4 22
4 5.7 7 8.0 8.9 10 11.3 12.6 15.5 17.9 20.0 21.9 25 28 31 35
3/4 6 8.9 10.9 12.6 14.1 15.4 17.8 20 24 28 32 35 40 45 49 55
1 10 14.1 17.3 20 22 24 28 32 39 45 50 55 63 71 77 87
1-1/4 16 23 28 32 36 39 45 51 62 72 80 88 101 113 124 139
1-1/2 25 35 43 50 56 61 71 79 97 112 125 137 158 177 194 217
2 40 57 69 80 89 98 113 126 155 179 200 219 253 283 310 346
Table 4. Maximum Water Capacity - Cubic Meters per Hour (m
3
/hr).
Valve Size
inches
mm
Pressure Differential - kPa
1 10 20 30 40 50 60 80
Kvs/
100
150 200 300 400 500
15
0.09 0.3 0.4 0.5 0.5 0.6 0.7 0.8 0.9 1.0 1.2 1.5 1.7 1.9
0.14 0.4 0.6 0.8 0.9 1.0 1.1 1.2 1.4 1.7 1.9 2.4 2.7 3.1
0.2 0.7 1.0 1.2 1.4 1.5 1.7 1.9 2.2 2.6 3.0 3.7 4.3 4.8
0.3 1.1 1.5 1.9 2.2 2.4 2.7 3.1 3.4 4.2 4.9 6.0 6.9 7.7
20 0.5 1.7 2.4 3.0 3.4 3.8 4.2 4.9 5.4 6.7 7.7 9.4 10.9 12.1
25 0.9 2.7 3.8 4.7 5.4 6.1 6.7 7.7 8.6 10.5 12.2 14.9 17.2 19.2
32 1.4 4.4 6.2 7.6 8.7 9.8 10.7 12.3 13.8 16.9 19.5 23.9 27.6 30.9
40 2.2 6.8 9.6 11.8 13.6 15.2 16.7 19.2 22 26 30 37 43 48
50 3.4 10.9 15.4 18.8 22 24 27 31 34 42 49 60 69 77