Flowrite VF599 Series Three-Way Valves
Technical Instructions
2-1/2 to 6-inch Flanged Iron Body
Document Number 155-160P25
June 10, 2003
Siemens Industry, Inc.
Page 5
Table 6. Maximum Water Capacity - U.S. Gallons Per Minute.
Flow is Equal Through Both Ports.
Valve
Size
in
Inches
Pressure Differential - psi
Cv\1 2
3
4
5
6
8
10
15
20
25
30
40
50
60
75
2-1/2
63
89 109 126 141 154 178 199 244 282 315 345 398 445 488 546
3
100 141 173 200 224 245 283 316 387 447 500 548 632 707 775 866
4
160 226 277 320 358 392 453 506 620 716 800 876 1012 1131 1239 1386
5
250 354 433 500 559 612 707 791 968 1118 1250 1369 1581 1768 1936 2165
6
400 566 693 800 894 980 1131 1265 1549 1789 2000 2191 2530 2828 3098 3464
Table 7. Maximum Water Capacity - Cubic Meters Per Hour (m
3
/hr)
Flow is Equal Through Both Ports.
Valve
Size
in
mm
Pressure Differential - kPa
1
10
20
30
40
50
60
80 Kvs/100 150 200 300 400 500
65
5.4 17.1 24
30
34
38
42
48
54
66
76
94 108 121
80
8.5
27
38
47
54
60
66
76
85
104 120 147 170 190
100
14
43
61
75
87
97
106 123
137
168 194 237 274 306
125
21
68
96 117 135 151 166 191
214
262 303 371 428 479
150
34 108 153 187 216 242 265 306
342
419 484 592 684 765
Table 8. Close-off Pressures for Electronic Actuators.
Action
Valve
Size
In. (mm)
SKB/C
SKD
El/Mech
Spring Return
El/Mech
Non-Spring Return
psi
(kPa)
psi
(kPa)
psi
(kPa)
psi
(kPa)
NC
(Upper port)
2-1/2 (65)
97
(668)
34
(234)
24
(165)
50
(344)
3 (80)
63
(434)
22
(152)
15
(103)
32
(220)
4 (100)
39
(268)
—
—
10
(68)
20
(137)
5 (125)
25
(172)
—
—
—
—
—
—
6 (150)
17
(117)
—
—
—
—
—
—
NO
(Bottom port)
2-1/2 (65)
153
(518)
38
(262)
23
(158)
48
(330)
3 (80)
101
(342)
25
(172)
16
(110)
32
(220)
4 (100)
65
(448)
—
—
10
(68)
21
(144)
5 (125)
42
(289)
—
—
—
—
—
—
6 (150)
29
(199)
—
—
—
—
—
—
