Bray 40_41 - Manual (Page 20)

Bray/McCannalok HPBV – Valve Sizing Coefficients
All information herein is proprietary and confidential and may not be copied or reproduced without the expressed written consent of BRAY INTERNATIONAL, Inc.
The technical data herein is for general information only. Product suitability should be based solely upon customer’s detailed knowledge and experience with their application. Coefficients : 20
ASME 300 Series 42/43/4B - Valve Sizing Coefficient (Kv)
Valve
Size
mm
Disc Position (Degrees)
90º 80º 70º 60º 50º 40º 30º 20º 10º
65 136 116 85 67 43 26 14 7 3
80 158 152 132 105 74 48 27 12 4
100 320 311 269 213 149 98 54 26 9
125 674 576 427 307 203 125 67 35 14
150 853 746 606 452 316 205 118 67 22
200 1,706 1,467 1,160 810 537 345 205 103 40
250 2,260 1,919 1,484 1,024 665 435 252 128 52
300 3,412 2,900 2,133 1,442 938 606 367 188 78
350 3,497 2,986 2,218 1,510 1,024 708 418 205 85
400 6,653 5,579 3,881 2,533 1,570 989 623 358 154
450 8,104 6,824 5,263 3,864 2,653 1,680 921 375 80
500 9,383 8,163 6,227 4,606 3,173 1,987 1,066 452 94
600 15,354 12,880 9,724 7,310 5,050 3,156 1,706 708 154
750 24,737 20,813 16,122 11,686 7,251 5,118 2,755 1134 247
900 38,385 32,499 24,908 17,913 12,624 7,762 3,975 1476 324
1,050 51,180 46,062 35,826 25,590 16,207 11,089 6,398 2218 384
1,200 70,799 63,122 49,474 34,973 22,178 14,501 8,530 3753 682
1,350 Please Consult Factory
ASME 600 Series 44/45 - Valve Sizing Coefficient (Kv)
Valve
Size
mm
Disc Position (Degrees)
90º 80º 70º 60º 50º 40º 30º 20º 10º
80 141 135 115 88 57 39 10 7 3
100 256 230 179 128 81 60 38 26 4
150 735 662 519 368 234 173 112 61 13
200 1,280 1,152 896 640 409 294 178 67 17
250 1,877 1,680 1,314 938 597 427 256 119 34
300 2,644 2,380 1,851 1,322 853 580 341 162 47
350 3,327 2,815 2,047 1,339 938 623 358 171 60
400 4,265 3,583 2,474 1,621 1,024 682 427 213 81
450 5,118 4,265 3,327 2,388 1,621 1,024 563 247 111
500 6,824 5,886 4,521 3,327 2,303 1,450 810 341 122
600 9,383 7,933 5,971 4,436 3,071 1,919 1,024 427 154
750 12,795 11,089 8,530 7,165 4,350 2,388 1,407 512 171