Flowrite™ 599 Series High Pressure Close-Off Two-Way Valves 2-1/2 to 6-inch
Technical Instructions
Flanged Iron Bodies ANSI Classes 125 and 250
Document Number 155-758
June 14, 2019
Siemens Industry, Inc.
Page 5
Table 4. Cast Iron Valve Body Ratings.
Temperature
Pressure psig (kPa)
°F
°C
ANSI Class 125
ANSI Class 250
–20 to 150
–30 to 66
200 (1387)
500 (3447)
200
93
190 (1310)
460 (3171)
250
121
175 (1206)
415 (2861)
300
149
165 (117)
375 (2585)
400
204
140 (965)
290 (1999)
450
232
125 (861)
250 (1723)
Table 5. Maximum Water Capacity - U.S. Gallons per Minute.
Valve
Size
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 6. Maximum Water Capacity - Cubic Meters per Hour (m3/hr).
Valve
Size
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
