Bray/McCannalok High Performance Butterfly Valves Technical Manual

Bray/McCannalok High Performance Butterfly s TM123-6/1/215

TABLE OF CONTENTS Seating & Unseating Torques 1 ASME 15 - Torques (Lb-in) 2 ASME 15 - Torques (Lb-in) 3 ASME 3 - Torques (Lb-in) 4 ASME 6 - Torques (Lb-in) 5 ASME 15 - Torques (N-m) 6 ASME 15 - Torques (N-m) 7 ASME 3 - Torques (N-m) 8 ASME 6 - Torques (N-m) 9 Dynamic Torques 1 Dynamic Torque Coefficient 11 Subchoked and Choked Flow 12 Subchoked Liquid Flow, Line-size 13 Choked Gas Flow, Reduced-size 13 Maximum Allowable Stem Torques (Lb-in)* 14 Maximum Allowable Stem Torques (N-m)* 15 Sizing Coefficients (Cv) 16 ASME 15 Series 4/41/4A - Sizing Coefficient (Cv) 16 ASME 3 Series 42/43/4B - Sizing Coefficient (Cv) 17 ASME 6 Series 44/45 - Sizing Coefficient (Cv) 17 Sizing Coefficients (Kv) 18 ASME 15 Series 4/41/4A - Sizing Coefficient (Kv) 18 ASME 3 Series 42/43/4B - Sizing Coefficient (Kv) 19 ASME 6 Series 44/45 - Sizing Coefficient (Kv) 19 Pressure-Temperature Charts - Standard McCannalok s 2 Pressure-Temperature Charts - Firesafe McCannalok s 22 Pressure Temperature Charts - Cryogenic McCannalok s 23 Examples of Typical Flange to Bolting 25 For information on this product and other Bray products please visit us at our web page - www.bray.com

SEATING & UNSEATING TORQUES orientation to the flow of media affects the torque. Torque values are presented in two categories: FLOW Seat Retainer UPSTREAM FLOW Seat Retainer DOWNSTREAM 1

Inches ASME 15 - Torques (Lb-in) Series 4/41/4A Standard - Differential Pressure (psig) Less than 15 psig >15-2 psig >2-25 psig >25-285 psig Retainer Upstream Retainer Downstream Retainer Upstream Retainer Downstream Retainer Upstream Retainer Downstream Retainer Upstream Retainer Downstream 2 Please Consult Factory 2.5 17 2 19 24 21 28 215 3 3 185 22 21 26 225 3 23 32 4 275 32 3 37 315 42 32 46 5 55 65 64 8 75 94 73 1,4 6 69 81 77 96 825 1,1 84 1,2 8 1,28 1,5 1,4 1,7 1,5 1,95 1,57 2,1 1 2,4 2,8 2,64 3,3 2,82 3,76 2,87 4,1 12 3,5 4,1 4, 5, 4,4 5,9 4,55 6,5 14 5,4 6,3 5,92 7,4 6,4 8,5 6,65 9,5 16 7,7 9,1 9,4 11,3 1,1 13,5 1,5 15, 18 11,9 14, 13,6 17, 15, 2, 15,4 22, 2 15,3 18, 17,1 21,3 18,5 24,7 18,9 27, 24 24,65 29, 27,68 34,6 3, 4,1 3,8 44, 26 24,65 29, 27,68 34,6 3, 4,1 3,8 44, 28 34,85 41, 37,6 47, 44,3 59,2 44,5 63,5 3 39,95 47, 42,96 53,7 5,8 67,7 52,5 75, 32 45, 53, 48,8 61, 57,6 76,8 58,8 84, 34 45, 53, 48,8 61, 57,6 76,8 58,8 84, 36 54, 64, 64,8 81, 73,5 98, 77, 11, 4 62, 73, 73,6 92, 82,5 11, 84,7 121, 42 71, 83, 84, 15, 95,25 127, 11, 143, 48 98, 115, 121,6 152, 142,5 19, 151,9 217, 54 136, 16, 169,6 212, 198, 265, 211,4 32, 6 Please Consult Factory 2

ASME 15 - Torques (Lb-in) Series 4/41/4A Fire Safe - Differential Pressure (psig) Less than 15 psig >15-2 psig >2-25 psig >25-285 psig Inches Retainer Upstream Retainer Downstream Retainer Upstream Retainer Downstream Retainer Upstream Retainer Downstream Retainer Upstream Retainer Downstream 2.5 68 72 69 77 7 81 71 84 3 75 8 76 83 77 87 78 9 4 85 9 88 98 89 1,5 91 1,1 5 1,42 1,5 1,47 1,63 1,5 1,75 1,6 1,85 6 1,66 1,75 1,69 1,88 1,8 2, 1,9 2,1 8 2,6 2,8 2,69 2,95 2,75 3,1 2,86 3,2 1 3,9 4,2 4,1 4,53 4,25 4,86 4,4 5,1 12 6,5 6,9 6,6 7,35 6,7 7,79 6,9 8,1 14 12,3 13, 12,6 14, 13,2 15,5 13,6 17, 16 15,2 16, 15,8 17,6 16,3 19,2 16,32 2,4 18 18, 19, 18,9 21, 19, 22,5 19,2 24, 2 21,8 23, 22,5 25, 23,8 28, 28,8 36, 24 31, 33, 34,2 38, 37,4 44, 5,4 63, 26 28 3 32 34 Please Consult Factory 36 4 42 Series 4/41/4A Metal Seated - Differential Pressure (psig) 2.5 614 646 624 694 631 727 64 758 3 674 723 683 745 689 781 72 815 4 765 814 79 877 8 947 821 996 5 1,271 1,347 1,32 1,474 1,35 1,579 1,445 1,669 6 1,496 1,582 1,528 1,7 1,615 1,86 1,71 1,884 8 2,343 2,59 2,432 2,661 2,489 2,781 2,563 2,886 1 3,52 3,772 3,711 4,77 3,88 4,369 3,982 4,585 12 5,863 6,176 5,966 6,652 6,3 7,3 6,189 7,266 14 11,119 11,752 11,43 12,614 11,946 14,12 12,294 15,368 16 13,726 14,368 14,22 15,928 14,735 17,299 14,77 18,38 18 16,236 17,43 17,67 18,816 17,195 2,363 17,338 21,672 2 19,685 2,723 2,34 22,575 21,491 25,116 25,834 32,364 24 27,962 29,865 3,746 34,276 33,585 39,6 45,18 56,7 3 Please Consult Factory 3

Inches ASME 3 - Torques (Lb-in) Series 42/43/4B Standard - Differential Pressure (psig) Less than 15 psig >15-35 psig >35-55 psig >55-74 psig Retainer Upstream Retainer Downstream Retainer Upstream Retainer Downstream Retainer Upstream Retainer Downstream Retainer Upstream Retainer Downstream 2.5 17 2 29 36 38 51 47 67 3 185 22 31 38 4 53 49 69 4 27 32 42 53 55 73 7 1, 5 55 65 1, 1,25 1,39 1,85 1,8 2,55 6 85 1, 1,32 1,65 1,72 2,3 2,1 3, 8 1,58 1,85 2,48 3,1 3,23 4,3 3,7 5,3 1 2,8 3,3 4,4 5,5 5,7 7,6 7, 1, 12 4,25 5, 6,64 8,3 8,63 11,5 1,5 15, 14 7,3 8,6 1,72 13,4 13,7 18,3 15,4 22, 16 11,9 14, 17,2 21,5 21,8 29, 26,6 38, 18 15,3 18, 21,6 27, 27,1 36,1 31,5 45, 2 2,4 24, 29,4 36,7 37, 49,3 42,7 61, 24 32,3 38, 45,6 57, 57,5 76,7 66,5 95, 3 68, 8, 11,6 127, 129, 172, 147, 21, 36 11,15 119, 144, 18, 18, 24, 23, 29, 4 115,6 136, 168, 21, 222, 296, 278,6 398, 48 127,5 15, 217,6 272, 321, 428, 43,2 576, 54 Please Consult Factory Series 42/43/4B Fire Safe - Differential Pressure (psig) 2.5 68 72 775 86 86 1,1 88 1,1 3 75 8 855 95 935 1,1 96 1,2 4 85 9 1,8 1,2 1,275 1,5 1,36 1,7 5 1,42 1,5 2,7 2,3 2,635 3,1 2,88 3,6 6 2, 2,1 2,61 2,9 3,15 3,7 3,44 4,3 8 3, 3,15 3,87 4,3 4,675 5,5 4,96 6,2 1 6,9 7,3 9,18 1,2 11,5 13, 12, 15, 12 1,45 11, 13,2 14,7 15,64 18,4 16,8 21, 14 18,5 19, 21,6 24, 22,1 26, 22,4 28, 16 26,6 28, 34,2 38, 37,4 44, 39,2 49, 18 2 24 3 36 Please Consult Factory Series 42/43/4B Metal Seated - Differential Pressure (psig) 2.5 611 65 7 771 776 95 795 99 3 674 721 766 852 837 993 869 1,8 4 768 812 97 1,82 1,15 1,353 1,228 1,525 5 1,277 1,356 1,867 2,61 2,372 2,787 2,61 3,247 6 1,792 1,884 2,354 2,622 1,939 3,33 3,16 3,849 8 2,712 2,822 3,479 3,892 4,193 4,961 4,454 5,586 1 6,245 6,67 8,234 9,2 9,923 11,648 1,752 13,47 12 9,45 9,845 11,84 13,34 14,76 16,523 15,17 19,5 14 16,191 17,81 19,44 21,72 19,824 23,452 2,115 25,116 16 24,2 25,284 3,917 34,352 33,51 39,424 35,476 44,198 18 2 24 3 Please Consult Factory 4

Inches ASME 6 - Torques (Lb-in) Series 44/45 Standard - Differential Pressure (psig) Less than 15 psig >15-6 psig >6-15 psig >15-148 psig Retainer Upstream Retainer Downstream Retainer Upstream Retainer Downstream Retainer Upstream Retainer Downstream Retainer Upstream Retainer Downstream 3 4 48 7 87 9 1,2 1, 1,45 4 85 96 1,28 1,6 1,58 2,1 1,9 2,7 6 1,45 1,7 2,56 3,2 3,45 4,6 4,1 5,8 8 3,5 4,1 5,76 7,2 7,6 1,1 9,8 14, 1 7,1 8,3 9,6 12, 13,5 18, 16,8 24, 12 1,1 11,8 11,2 14, 19,5 26, 21, 3, 14 11,9 14, 19,2 24, 24,8 33, 3, 43, 16 14, 16,5 28,4 35,5 34,5 46, 45,5 65, 18 16,2 19, 34,4 43, 49, 65, 64,4 92, 2 21,3 25, 45,6 57, 66, 88, 87, 124, 24 33, 39, 71, 89, 94, 125, 123, 175, 3 71, 83, 137, 172, 18, 24, 217, 31, Series 44/45 Fire Safe - Differential Pressure (psig) 3 4 6 8 1 12 14 16 3 4 6 8 1 12 14 16 Please Consult Factory Series 44/45 Metal Seated - Differential Pressure (psig) Please Consult Factory 5

mm ASME 15 - Torques (N-m) Series 4/41/4A Standard - Differential Pressure (Bar) Less than 1.3 Bar >1.3-14 Bar >14-17.2 Bar >17.2-2 Bar Retainer Upstream Retainer Downstream Retainer Upstream Retainer Downstream Retainer Upstream Retainer Downstream Retainer Upstream Retainer Downstream 5 Please Consult Factory 65 19 23 21 27 24 32 24 34 8 21 25 24 29 25 34 26 36 1 31 36 34 42 36 47 36 52 125 62 73 72 9 8 16 82 118 15 78 92 87 18 93 124 95 136 2 145 17 158 192 17 22 177 237 25 271 316 411 373 319 425 324 463 3 396 463 452 565 497 667 514 735 35 61 712 669 836 723 961 751 1,74 4 87 1,28 1,22 1,277 1,141 1,526 1,187 1,695 45 1,345 1,582 1,537 1,921 1,695 2,26 1,74 2,486 5 1,729 2,34 1,932 2,47 2,91 2,791 2,136 3,51 6 2,785 3,277 3,128 3,91 3,39 4,531 3,48 4,972 65 2,785 3,277 3,128 3,91 3,39 4,531 3,48 4,972 7 3,938 4,633 4,249 5,311 5,6 6,69 5,29 7,176 75 4,514 5,311 4,854 6,68 5,74 7,65 5,933 8,475 8 5,85 5,989 5,514 6,893 6,59 8,678 6,644 9,492 85 5,85 5,989 5,514 6,893 6,59 8,678 6,644 9,492 9 6,12 7,232 7,322 9,153 8,36 11,74 8,71 12,43 1, 7,6 8,249 8,317 1,396 9,323 12,43 9,571 13,673 1,5 8,23 9,379 9,492 11,865 1,763 14,351 11,413 16,159 1,2 11,74 12,995 13,741 17,176 16,13 21,47 17,165 24,521 1,35 15,368 18,8 19,165 23,956 22,374 29,945 23,888 34,126 1,5 Please Consult Factory 6

ASME 15 - Torques (N-m) Series 4/41/4A Fire Safe - Differential Pressure (Bar) Less than 1.3 Bar >1.3-14 Bar >14-17.2 Bar >17.2-2 Bar mm Retainer Upstream Retainer Downstream Retainer Upstream Retainer Downstream Retainer Upstream Retainer Downstream Retainer Upstream Retainer Downstream 65 77 81 78 87 79 92 8 95 8 85 9 86 94 87 98 88 12 1 96 12 99 111 11 119 13 124 125 16 17 166 184 17 198 181 29 15 188 198 191 212 23 226 215 237 2 294 316 34 333 311 35 323 362 25 441 475 463 512 48 549 497 576 3 735 78 746 831 757 88 78 915 35 1,39 1,469 1,424 1,582 1,492 1,752 1,537 1,921 4 1,718 1,88 1,785 1,989 1,842 2,17 1,844 2,35 45 2,34 2,147 2,136 2,373 2,147 2,543 2,17 2,712 5 2,463 2,599 2,543 2,825 2,689 3,164 3,254 4,68 6 3,53 3,729 3,865 4,294 4,226 4,972 5,695 7,119 65 7 75 8 85 Please Consult Factory 9 1, 1,5 Series 4/41/4A Metal Seated - Differential Pressure (Bar) 65 69 73 71 78 71 82 72 86 8 76 82 77 84 78 88 79 92 1 86 92 89 99 9 17 93 112 125 144 152 149 166 153 178 163 189 15 169 179 173 192 182 24 192 213 2 265 283 275 31 281 314 29 326 25 396 426 419 461 43 494 45 518 3 662 698 674 752 681 791 699 821 35 1,256 1,328 1,288 1,425 1,35 1,583 1,389 1,736 4 1,551 1,623 1,67 1,8 1,665 1,955 1,669 2,77 45 1,834 1,926 1,928 2,126 1,943 2,31 1,959 2,449 5 2,224 2,341 2,298 2,551 2,428 2,838 2,919 3,657 6 3,159 3,374 3,474 3,873 3,795 4,474 5,97 6,46 75 Please Consult Factory 7

mm ASME 3 - Torques (N-m) Series 42/43/4B Standard - Differential Pressure (Bar) Less than 1.3 Bar >1.3-24 Bar >24-38 Bar >38-51 Bar Retainer Upstream Retainer Downstream Retainer Upstream Retainer Downstream Retainer Upstream Retainer Downstream Retainer Upstream Retainer Downstream 65 19 23 33 41 43 58 53 76 8 21 25 35 43 45 6 55 78 1 31 36 47 6 62 82 79 113 125 62 73 113 141 157 29 23 288 15 96 113 149 186 194 26 237 339 2 179 29 28 35 365 486 418 599 25 316 373 497 622 644 859 791 1,13 3 48 565 75 938 975 1,3 1,187 1,695 35 825 972 1,211 1,514 1,548 2,68 1,74 2,486 4 1,345 1,582 1,944 2,43 2,463 3,277 3,6 4,294 45 1,729 2,34 2,441 3,51 3,62 4,79 3,56 5,85 5 2,35 2,712 3,322 4,147 4,181 5,571 4,825 6,893 6 3,65 4,294 5,153 6,441 6,498 8,667 7,515 1,735 75 7,684 9,4 11,481 14,351 14,577 19,436 16,611 23,73 9 11,43 13,447 16,272 2,34 2,34 27,12 22,939 32,77 1, 13,63 15,368 18,984 23,73 25,86 33,448 31,482 44,974 1,2 14,48 16,95 24,589 3,736 36,273 48,364 45,562 65,88 1,35 Please Consult Factory Series 42/43/4B Fire Safe - Differential Pressure (Bar) 65 77 81 88 97 97 114 99 124 8 85 9 97 17 16 124 18 136 1 96 12 122 136 144 17 154 192 125 16 17 234 26 298 35 325 47 15 226 237 295 328 356 418 389 486 2 339 356 437 486 528 622 56 71 25 78 825 1,37 1,153 1,249 1,469 1,356 1,695 3 1,181 1,243 1,492 1,661 1,767 2,79 1,898 2,373 35 2,4 2,147 2,441 2,712 2,497 2,938 2,531 3,164 4 3,6 3,164 3,865 4,294 4,226 4,972 4,43 5,537 45 5 6 75 9 Please Consult Factory Series 42/43/4B Metal Seated - Differential Pressure (Bar) 65 69 73 79 87 88 12 9 112 8 76 81 87 96 95 112 98 122 1 87 92 11 122 13 153 139 172 125 144 153 211 233 268 315 294 367 15 22 213 266 296 219 376 351 435 2 36 319 393 44 474 561 53 631 25 76 746 93 1,4 1,121 1,316 1,215 1,522 3 1,63 1,112 1,338 1,53 1,59 1,867 1,714 2,147 35 1,829 1,93 2,196 2,454 2,24 2,65 2,273 2,838 4 2,714 2,857 3,493 3,881 3,786 4,454 4,8 4,994 45 5 6 7 Please Consult Factory 8

mm ASME 6 - Torques (N-m) Series 44/45 Standard - Differential Pressure (Bar) Less than 1.3 Bar >1.3-41.4 Bar >41.4-72.4 Bar >72.4-12 Bar Retainer Upstream Retainer Downstream Retainer Upstream Retainer Downstream Retainer Upstream Retainer Downstream Retainer Upstream Retainer Downstream 8 45 54 79 98 12 136 113 164 1 96 18 145 181 179 237 215 35 15 164 192 289 362 39 52 463 655 2 396 463 651 814 859 1,141 1,17 1,582 25 82 938 1,85 1,356 1,526 2,34 1,898 2,712 3 1,141 1,333 1,266 1,582 2,24 2,938 2,373 3,39 35 1,345 1,582 2,17 2,712 2,82 3,729 3,39 4,859 4 1,582 1,865 3,29 4,12 3,899 5,198 5,142 7,345 45 1,831 2,147 3,887 4,859 5,537 7,345 7,277 1,396 5 2,47 2,825 5,153 6,441 7,458 9,944 9,831 14,12 6 3,729 4,47 8,23 1,57 1,622 14,125 13,899 19,775 75 8,23 9,379 15,481 19,436 2,34 27,12 24,521 35,3 Series 44/45 Fire Safe - Differential Pressure (Bar) 8 1 15 2 25 3 35 4 8 1 15 2 25 3 35 4 Please Consult Factory Series 44/45 Metal Seated - Differential Pressure (Bar) Please Consult Factory 9

DYNAMIC TORQUES When a media flows through a butterfly valve, static pressure does not act uniformly on the surfaces of the valve disc. Dynamic torque will cause rotary motion when unchecked by the actuator or manual operator possibly resulting in opening or closing of the valve. If the dynamic torque is of a magnitude that is greater than the bearing and packing friction torque and there is no actuator in place to maintain disc position, the opening or closing action could result in injury to operating personnel or an interruption of the process. Sudden closure (slamming) can cause water hammer damage in lines carrying liquid. In high performance butterfly valves which have the disc offset from the stem and have non-symmetrical disc faces, dynamic torque acts to close the valve if the valve is installed with the seat retainer downstream, but can act to close or open the valve, depending on the position of the disc, if the seat retainer is upstream. Seat Retainer Upstream FLOW Seat Retainer Downstream FLOW Dynamic torque should be calculated as part of the valve actuator sizing procedure or to determine if hand lever operation is acceptable. In this regard, the total torque of all service conditions must be considered. The total torque when the disc is in the seat consists of: 1. Seating torque 2. Stem packing torque 3. Eccentricity torque 4. Stem bearing torque The total torque when the disc is in the seat is published as seating/unseating torque. When the disc is out of the seat, the total torque consists of dynamic torque, stem packing torque, and stem bearing torque. Total torque changes with the disc position. Maximum total torque can occur at shutoff (disc in the seat), at breakaway (motion initiation), or at any open disc position where the product of valve pressure drop and dynamic torque coefficient peaks in combination with prevailing bearing and packing torque. Estimating Dynamic Torque Dynamic torque can be estimated using the following empirical equations: Liquid Flow: Imperial Metric Gas Flow: Imperial Metric Td (Lb-in) = Ct D³ p Td (N-m) =.1 Ct D³ p Td (Lb-in) = Ct D³ Y p Td (N-m) =.1 Ct D³ Y p Dynamic Torque - Terminology Ct - dynamic torque coefficient (see graphs and tables on page 11 for values of Ct.) Positive value of Ct means that the dynamic torque acts to close the valve and a negative value of Ct to open the valve. D - nominal valve size (in or mm) Fk - ratio of specific heat factor (dimensionless) Fk = k/1.4 or Fk = 1 for air k - ratio of specific heat (dimensionless) p - effective pressure drop across the valve (psi or bar) p1 - valve inlet pressure (psia or bar abs.) Td - dynamic torque (Lb-in or N-m) x - x = p/p1 Y - gas expansion factor (dimensionless) Y = 1 x / (3 Fk xt) xt - gas critical pressure ratio (dimensionless) Values of xt change with disc position and are identical for seat retainer upstream and downstream. º Open xt º Open xt 1º.46 55.31 15º.46 6.28 2º.46 65.27 25.45 7.25 3.44 75.24 35.42 8.22 4.39 85.21 45.35 9º.19 5.33 1

DYNAMIC TORQUE COEFFICIENT Figure 1 - Seat Retainer Downstream Dynamic Torque Coefficient.55.5.45.4.35.3.25.2.15.1.5 Angle of Opening Ct Down Ct Values with the Seat Retainer Down Stream Bray/McCannalok Dynamic Torque Coefficient Seat Retainer Downstream 1 15 2 25 3 35 4 45 5 55 6 65 7 75 8 85 9..12.22.31.44.58.73.88.114.141.176.212.26.38.37.431.496.362 Figure 2 - Seat Retainer Upstream.15.1.5 -.5 -.1 -.15 -.2 -.25 -.3 -.35 -.4 Angle of Opening Ct up Dynamic Torque Coefficient Ct Values with the Seat Retainer Up Stream Bray/McCannalok Dynamic Torque Coefficient Seat Retainer Upstream 1 15 2 25 3 35 4 45 5 55 6 65 7 75 8 85 9..15.18.2.23.27.37.46.55.63.78.86.93.1.84.32 -.17 -.37 11

SUBCHOKED AND CHOKED FLOW For Condition Use Note Subchoked Flow Pipe and Equal With Pipe Reducers Nominal Pressure Drop Ct from graphs/tables on page 2 and page 21 Nominal Ct from graphs/tables on page 2 and page 21 Pressure Drop as if valve were installed in valve-sized pipe with same flow rate Choked Flow Pipe and Equal With Pipe Reducers Nominal Ct from graphs/tables on page 2 and page 21 Actual Pressure drop through valve. Nominal Ct from graphs/tables on page 2 and page 21 Actual pressure drop through valve/reducer assembly. If actual pressure drop at the choked condition is not known, estimate by evaluating the pressure in the piping at the valve outlet needed to sustain the choked flow rate through the piping downstream of the valve; then subtracting it from the valve inlet pressure. If the pressure drop at the choked condition is not known, estimate the line pressure just downstream of the valve/ reducer assembly which is needed to sustain the choked flow rate of the valve/reducer assembly through the downstream piping; then subtract this pressure from the line pressure just ahead of the valve/reducer assembly, to get the actual pressure drop. For Condition Use Note Subchoked Flow Pipe and Equal With Pipe Reducers Nominal Pressure Drop Ct from graphs/tables on page 2 and page 21 Nominal Ct from graphs/tables on page 2 and page 21 Pressure Drop (and expansion factor Y) as if valve were installed in valve-sized pipe with same flow rate. In calculating Y, use the line pressure just upstream of the inlet reducer for p1 and xt from the table on page 11. Choked Flow Pipe and Equal With Pipe Reducers Nominal Gas expansion factor Y of 2/3 Ct from graphs/tables on page 2 and page 21 p = p1 Fk xt Nominal Gas expansion factor Y of 2/3 Ct from graphs/tables on page 2 and page 21 p = p1 Fk xt Use xt from the table on page 11. Use the line pressure just upstream of the inlet reducer for p1 and xt from the table page 11 in calculating p, on page 13. 12

SUBCHOKED LIQUID FLOW, LINE-SIZE VALVE Example Calculations A 24 class 15 McCannalok is to be installed in a 24 line carrying water. It has been determined that the flow is not choked and the following pressure drops through the valve have been calculated: Estimate the maximum dynamic torque in Lb-in for the valve considering installation with the seat retainer upstream. Substituting produces following results: Thus the peak dynamic torque will occur between 3 and 4 degrees open. Verify dynamic torque at 35 degrees: Data 75 psi with the valve 2 degrees open 7 psi with the valve 3 degrees open 35 psi with the valve 4 degrees open 3.5 psi with the valve 55 degrees open 1.1 psi with the valve 6 degrees open.2 psi with the valve 7 degrees open.5 psi with the valve 8 degrees open.3 psi with the valve 9 degrees open Td = Ct D³ p 2 degrees, Td =.2 x 24³ x 75 = 2,7 Lb-in (tends to close the valve) 3 degrees, Td =.27 x 24³ x 7 = 26,1 Lb-in 4 degrees, Td =.46 x 24³ x 35 = 22,3 Lb-in 55 degrees, Td =.78 x 24³ x 3.5 = 3,8 Lb-in 6 degrees, Td =.86 x 24³ x 1.1 = 1,3 Lb-in 7 degrees, Td =.1 x 24³ x.2 = 3 Lb-in 8 degrees, Td =.32 x 24³ x.5 = 2 Lb-in 9 degrees, Td = -.369 x 24³ x.3 = -15 Lb-in (tends to open the valve) Approximate pressure drop = (7+35)/2 = 52.5 psi. The peak dynamic torque of approximately 27, Lb-in occurs at about 35 degrees open. At 35 degrees: Td =.37 x 24³ x 52.5 = 27, Lb-in When sizing the valve operator, total torque must be considered. The total torque when the disc is in the seat consists of seating torque, stem packing torque, eccentricity torque and stem bearing torque. The total torque when the disc is in the seat is published as seating/ unseating torque (see pages. 1-9. When the disc is out of the seat, total torque consists of dynamic torque, stem packing torque, and stem bearing torque. CHOKED GAS FLOW, REDUCED-SIZE VALVE Example Calculations 2 (DN 5) class 3 McCannalok butterfly valve is installed in a 6 mm (24 ) line flowing air and the disc is set at 45 degrees. The flow is choked. A pressure gauge tapped into the pipe just above the upstream reducer shows 24.5 bar. Estimate the dynamic torque in N-m, given that the seat retainer is installed downstream. Calculations: p = p1 Fk xt p = 25.5 x 1. x.35 = 8.9 bar Td =.1 Ct D³ Y p Data Td =.1 x.114 x 5³ x.667 x 8.9 = 8,5 N-m Thus the dynamic torque at 45º open is about 8,5 N-m, and acts to close the valve. D = 5 mm Fk = 1. Ct =.114 Y =.667 for choked flow p1 = 24.5 + 1. = 25.5 bar absolute, (1 atm. = 1.13 bar, i.e. about 1. bar) xt at 45º =.35 13

MAXIMUM ALLOWABLE STEM TORQUES (Lb-in)* Standard, Fire Safe and Metal Seated s inches ASME 15 ASME 3 ASME 6 Series S4/41/4A Series S42/43/4B Series 44/45 2 1,347 Please Consult Factory 2.5 1,968 1,968 Please Consult Factory 3 1,968 1,968 3,368 4 1,968 1,968 5,63 5 3,368 3,368 Please Consult Factory 6 3,368 5,63 9,945 8 5,544 1,292 27,818 1 1,251 18,511 64,635 12 14,454 27,818 81,314 14 27,818 64,635 136,42 16 64,635 136,42 221,381 18 81,314 136,42 375,962 2 136,42 149,811 55,24 24 149,811 375,962 82,18 26 149,811 Please Consult Factory 28 221,381 Please Consult Factory 3 375,962 771,674 Please Consult Factory 32 375,962 Please Consult Factory 34 375,962 Please Consult Factory 36 431,471 82,18 4 771,674 1,484,117 42 771,674 1,484,117 48 82,18 1,622,749 54 1,484,117 2,364,969 6 1,622,749 * Based on stem Material Code 54P (17-4 PH stainless steel, ASTM A564 Type 63 H115D) 14

MAXIMUM ALLOWABLE STEM TORQUES (N-m)* Standard, Fire Safe and Metal Seated s mm ASME 15 ASME 3 ASME 6 Series S4/41/4A Series S42/43/4B Series 44/45 5 152 Please Consult Factory 65 222 222 Please Consult Factory 8 222 222 38 1 222 222 636 125 38 38 Please Consult Factory 15 38 636 1,124 2 626 1,163 3,143 25 1,158 2,91 7,33 3 1,633 3,143 9,187 35 3,143 7,33 15,371 4 7,33 15,371 25,13 45 9,187 15,371 42,478 5 15,371 16,926 62,165 6 16,926 42,478 9,616 65 16,926 Please Consult Factory 7 25,13 Please Consult Factory 75 42,478 87,187 Please Consult Factory 8 42,478 Please Consult Factory 85 42,478 Please Consult Factory 9 48,75 9,616 1 87,187 167,683 15 87,187 167,683 12 9,616 183,346 135 167,683 267,26 15 183,346 * Based on stem Material Code 54P (17-4 PH stainless steel, ASTM A564 Type 63 H115D) 15

VALVE SIZING COEFFICIENTS (Cv) Cv stands for Sizing Coefficient. Cv varies with the valve size, angle of opening and the manufacturer s valve style. Cv is defined as the volume of water in USGPM that will flow through a given restriction or valve opening with a pressure drop of one (1) psi at room temperature. Inches ASME 15 Series 4/41/4A - Sizing Coefficient (Cv) Disc Position (Degrees) 9º 8º 7º 6º 5º 4º 3º 2º 1º 2.5 16 136 1 78 5 3 16 8 3 3 185 178 155 123 87 56 32 14 5 4 375 365 315 25 175 115 63 31 1 5 79 675 5 36 238 146 78 41 16 6 1,35 1,7 75 51 33 218 14 81 35 8 2,8 2,23 1,59 1,6 685 456 28 165 65 1 4,3 3,45 2,43 1,63 1,5 7 45 25 1 12 6,65 5,33 3,75 2,53 1,63 1,8 7 39 155 14 7,65 6,1 4,3 2,9 1,89 1,25 81 45 175 16 9,8 7,86 5,51 3,7 2,42 1,53 1,2 58 23 18 1,5 9,1 6,96 5,1 3,52 2,22 1,18 5 17 2 13,5 11,7 8,8 6,5 4,5 2,82 1,53 64 2 24 2, 17,1 12,8 9,57 6,64 3,88 2,2 92 24 26 2, 17,1 12,8 9,57 6,64 3,88 2,2 92 24 28 28, 23,9 18,2 13,5 9,3 5,7 3,1 1,3 29 3 32, 27,3 2,9 15,5 1,7 6,7 3,6 1,51 32 32 34, 29,1 22,3 16,5 11,4 7,15 3,85 1,61 34 34 34, 29,1 22,3 16,5 11,4 7,15 3,85 1,61 34 36 48,5 41,1 31,7 23,2 16,4 1,2 5,43 2,26 48 4 62, 55,2 44, 33,3 23,8 15,2 8,6 3,52 67 42 65, 58, 46,1 35, 25, 16, 9, 3,7 7 48 91, 8,9 63,7 43,6 29,1 2, 11, 4,6 92 54 125, 111, 87,5 6, 4, 27,5 15, 6, 1,2 6 16, 14, 15, 75, 5, 31, 17, 7, 1,4 16

Inches ASME 3 Series 42/43/4B - Sizing Coefficient (Cv) Disc Position (Degrees) 9º 8º 7º 6º 5º 4º 3º 2º 1º 2.5 16 136 1 78 5 3 16 8 3 3 185 178 155 123 87 56 32 14 5 4 375 365 315 25 175 115 63 31 1 5 79 675 5 36 238 146 78 41 16 6 1, 875 71 53 37 24 138 79 26 8 2, 1,72 1,36 95 63 45 24 121 47 1 2,65 2,25 1,74 1,2 78 51 295 15 61 12 4, 3,4 2,5 1,69 1,1 71 43 22 92 14 4,1 3,5 2,6 1,77 1,2 83 49 24 1 16 7,8 6,54 4,55 2,97 1,84 1,16 73 42 18 18 9,5 8, 6,17 4,53 3,11 1,97 1,8 44 94 2 11, 9,57 7,3 5,4 3,72 2,33 1,25 53 11 24 18, 15,1 11,4 8,57 5,92 3,7 2, 83 18 3 29, 24,4 18,9 13,7 8,5 6, 3,23 1,33 29 36 45, 38,1 29,2 21, 14,8 9,1 4,66 1,73 38 42 6, 54, 42, 3, 19, 13, 7,5 2,6 45 48 83, 74, 58, 41, 26, 17, 1, 4,4 8 54 Please Consult Factory Inches ASME 6 Series 44/45 - Sizing Coefficient (Cv) Disc Position (Degrees) 9º 8º 7º 6º 5º 4º 3º 2º 1º 3 165 158 135 13 67 46 12 8 3 4 3 27 21 15 95 7 45 3 5 6 8 765 6 425 27 2 13 7 15 8 1,5 1,35 1,5 75 48 345 29 78 2 1 2,2 1,97 1,54 1,1 7 5 3 14 4 12 3,1 2,79 2,17 1,55 1, 68 4 19 55 14 3,9 3,3 2,4 1,57 1,1 73 42 2 7 16 5, 4,2 2,9 1,9 1,2 8 5 25 95 18 6, 5, 3,9 2,8 1,9 1,2 66 29 13 2 8, 6,9 5,3 3,9 2,7 1,7 95 4 143 24 11, 9,3 7, 5,2 3,6 2,25 1,2 5 18 3 15, 13, 1, 8,4 5,1 2,8 1,65 6 2 17

VALVE SIZING COEFFICIENTS (Kv) Kv stands for Sizing Coefficient. Kv varies with the valve size, angle of opening and the manufacturer s valve style. Kv is defined as the volume of water in Cubic Meters/Hour (m3/hr) that will flow through a given restriction or valve opening with a pressure drop of one (1) bar at room temperature. mm ASME 15 Series 4/41/4A - Sizing Coefficient (Kv) Disc Position (Degrees) 9º 8º 7º 6º 5º 4º 3º 2º 1º 65 136 116 85 67 43 26 14 7 3 8 158 152 132 15 74 48 27 12 4 1 32 311 269 213 149 98 54 26 9 125 674 576 427 37 23 125 67 35 14 15 1,152 913 64 435 281 186 119 69 3 2 2,388 1,92 1,356 94 584 389 239 141 55 25 3,668 2,943 2,73 1,39 896 597 384 213 85 3 5,672 4,546 3,199 2,158 1,39 921 597 333 132 35 6,525 5,23 3,668 2,474 1,612 1,66 691 384 149 4 8,359 6,75 4,7 3,156 2,64 1,35 87 495 196 45 8,957 7,762 5,937 4,35 3,3 1,894 1,7 427 145 5 11,516 9,98 7,56 5,545 3,839 2,45 1,35 546 171 6 17,6 14,586 1,918 8,163 5,664 3,31 1,877 785 25 65 17,6 14,586 1,918 8,163 5,664 3,31 1,877 785 25 7 23,884 2,387 15,525 11,516 7,933 4,862 2,644 1,19 247 75 27,296 23,287 17,828 13,222 9,127 5,715 3,71 1,288 273 8 29,2 24,822 19,22 14,75 9,724 6,99 3,284 1,373 29 85 29,2 24,822 19,22 14,75 9,724 6,99 3,284 1,373 29 9 41,371 35,58 27,4 19,79 13,989 8,71 4,632 1,928 49 1, 52,886 47,86 37,532 28,45 2,31 12,966 7,336 3,3 572 1,5 55,445 49,474 39,323 29,855 21,325 13,648 7,677 3,156 597 1,2 77,623 69,8 54,336 37,191 24,822 17,6 9,383 3,924 785 1,35 16,625 94,683 74,638 51,18 34,12 23,458 12,795 5,118 1,24 1,5 136,48 119,42 89,565 63,975 42,65 26,443 14,51 5,971 1,194 18

mm ASME 3 Series 42/43/4B - Sizing Coefficient (Kv) Disc Position (Degrees) 9º 8º 7º 6º 5º 4º 3º 2º 1º 65 136 116 85 67 43 26 14 7 3 8 158 152 132 15 74 48 27 12 4 1 32 311 269 213 149 98 54 26 9 125 674 576 427 37 23 125 67 35 14 15 853 746 66 452 316 25 118 67 22 2 1,76 1,467 1,16 81 537 345 25 13 4 25 2,26 1,919 1,484 1,24 665 435 252 128 52 3 3,412 2,9 2,133 1,442 938 66 367 188 78 35 3,497 2,986 2,218 1,51 1,24 78 418 25 85 4 6,653 5,579 3,881 2,533 1,57 989 623 358 154 45 8,14 6,824 5,263 3,864 2,653 1,68 921 375 8 5 9,383 8,163 6,227 4,66 3,173 1,987 1,66 452 94 6 15,354 12,88 9,724 7,31 5,5 3,156 1,76 78 154 75 24,737 2,813 16,122 11,686 7,251 5,118 2,755 1134 247 9 38,385 32,499 24,98 17,913 12,624 7,762 3,975 1476 324 1,5 51,18 46,62 35,826 25,59 16,27 11,89 6,398 2218 384 1,2 7,799 63,122 49,474 34,973 22,178 14,51 8,53 3753 682 1,35 Please Consult Factory mm ASME 6 Series 44/45 - Sizing Coefficient (Kv) Disc Position (Degrees) 9º 8º 7º 6º 5º 4º 3º 2º 1º 8 141 135 115 88 57 39 1 7 3 1 256 23 179 128 81 6 38 26 4 15 735 662 519 368 234 173 112 61 13 2 1,28 1,152 896 64 49 294 178 67 17 25 1,877 1,68 1,314 938 597 427 256 119 34 3 2,644 2,38 1,851 1,322 853 58 341 162 47 35 3,327 2,815 2,47 1,339 938 623 358 171 6 4 4,265 3,583 2,474 1,621 1,24 682 427 213 81 45 5,118 4,265 3,327 2,388 1,621 1,24 563 247 111 5 6,824 5,886 4,521 3,327 2,33 1,45 81 341 122 6 9,383 7,933 5,971 4,436 3,71 1,919 1,24 427 154 75 12,795 11,89 8,53 7,165 4,35 2,388 1,47 512 171 19

PRESSURE-TEMPERATURE CHARTS - STANDARD MCCANNALOK VALVES Figure 3 Stainless Steel Body with PTFE Seat Temperature ºF 6 5 4 3 2 1-2 Pressure Bar 2 4 6 8 1 3 ASME 15 ASME 3 ASME 6-29 2 4 6 8 1 12 14 16 Pressure psig 2 1 Temperature ºC Carbon Steel Body with PTFE Seat Temperature ºF 6 5 4 3 2 1-2 Pressure Bar 2 4 6 8 1 ASME 15 ASME 3 ASME 6-29 2 4 6 8 1 12 14 16 Pressure psig 3 2 1 Temperature ºC Note: s in all pressure classes are rated to a maximum pressure rating of 15 psig (1.3 bar) in steam service applications. 2

PRESSURE TEMPERATURE CHARTS - STANDARD MCCANNALOK VALVES Figure 4 Stainless Steel Body with RTFE Seat Temperature ºF 6 5 4 3 2 1-2 Pressure Bar 2 4 6 8 1 3 ASME 15 ASME 3 ASME 6-29 2 4 6 8 1 12 14 16 Pressure psig 2 1 Temperature ºC Carbon Steel Body with RTFE Seat Temperature ºF 6 5 4 3 2 1-2 Pressure Bar 2 4 6 8 1 ASME 15 ASME 3 ASME 6-29 2 4 6 8 1 12 14 16 Pressure psig 3 2 1 Temperature ºC Note: s in all pressure classes are rated to a maximum pressure rating of 15 psig (1.3 bar) in steam service applications. 21

PRESSURE-TEMPERATURE CHARTS - FIRESAFE MCCANNALOK VALVES Figure 5 Carbon Steel Body with Inconel Seat Pressure Bar Temperature ºF 9 2 4 6 8 1 12 6 8 7 5 6 4 5 3 4 3 2 2 1 ASME 15 ASME 3 ASME 6 1-2 -29 2 4 6 8 1 12 14 16 Temperature ºC Pressure psig Stainless Steel Body with Inconel Seat Pressure Bar 1 2 4 6 8 1 12 6 8 5 Temperature ºF 6 4 2-2 ASME 15 ASME 3 ASME 6-29 2 4 6 8 1 12 14 16 4 3 2 1 Temperature ºC Pressure psig Cryogenic with 22

PRESSURE TEMPERATURE CHARTS - CRYOGENIC MCCANNALOK VALVES Figure 6 Cryogenic with Stainless Steel Body and Polar Seat Pressure Bar Temperature ºF 15 1 5-5 -1-15 2 4 6 8 1 12 6 4 2-5 -1 Temperature ºC -2-32 ASME 15 ASME 3 ASME 6-15 -196 2 4 6 8 1 12 14 16 Pressure psig Low Temperature with Carbon Steel Body and Polar Seat Pressure Bar 15 2 4 6 8 1 12 6 Temperature ºF 1 75 5 25-6 ASME 15 ASME 3 ASME 6-51 2 4 6 8 1 12 14 16 4 2 Temperature ºC Pressure psig 23

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EXAMPLES OF TYPICAL FLANGE TO VALVE BOLTING* Examples of Typical Flange to Bolting* Lug Style Bolting Seat Retainer Gasket Gasket Raised Face Flange Washer **Minimum Bolt Engagement Must Be Equal to Diameter of Bolt Body Raised Face Flange Washer ** Minimum Bolt Engagement Must Be Equal to Diameter of Bolt Flange Width Including Raised Face If Applicable Gasket Width Seat Retainer Width Seat Retainer Side ONLY! Washer Width Minimum Bolt Engagement Equal to Bolt Diameter Bolt Length Wafer Style Bolting Gasket Seat Retainer Gasket Flat Face Flange Flat Face Flange Washer Face to Face Washer Flange Width x2 Including Raised Face If Applicable Gasket Width x2 Face to Face Washer Width x2 Width of Nut x2 4 Threads (2 Per Side) Overall Length Note: Please refer to Appropriate Bray Dimensional Drawings for specific valve drilling information. Applies to Wafer and Lug s as follows: ASME Class 15 26 s and larger ASME Class 3 14 s and larger ASME Class 6 1 s and larger Please refer to ASME B-16.5 or B-16.47 for Flange and Bolt Dimension Information * Double flange style bolting not shown. ** Lug Threads may be tapped from both sides and therefore tap may not be continuous. 25

All statements, technical information, and recommendations in this bulletin are for general use only. Consult Bray representatives or factory for the specific requirements and material selection for your intended application. The right to change or modify product design or product without prior notice is reserved. Patents issued and applied for worldwide. Bray is a registered trademark of Bray International, Inc. 215 Bray International, Inc. All rights reserved. TM_123_S4_6_1_215 Bray Controls Division of Bray International, Inc. 13333 Westland East Blvd. Houston, Texas 7741 Tel: 281.894.5454 www.bray.com