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Series | Code | Description |
BWX | BKX300 | NELES BWX-SERIES, METAL SEATED DOUBLE ECCENTRIC VALVE, RATING ASME 300 (BWX_D) |
The type BWX_D refers to cryogenic and warm temperatures.
The values for the standard valve are based on single U-shape seat construction and for standard materials.
The valve is designed for control and on/off purposes. Temperature range starts from -273 ... +475 °C, pressure rating ANSI class 300, PN25 and PN40. Use BWX_D for for Double flanged, lug and wafer.
Cv-values
SIZE | Relative opening h |
DN | INCH | RN | 10 % | 20 % | 30 % | 40 % | 50 % | 60 % | 70 % | 80 % | 90 % | 100 % |
RN = Reduction Number |
100 | 4 | 0 | 10 | 25 | 43 | 66 | 101 | 149 | 214 | 284 | 309 | 310 |
150 | 6 | 0 | 32 | 81 | 142 | 218 | 332 | 490 | 704 | 939 | 1021 | 1022 |
200 | 8 | 0 | 69 | 174 | 307 | 472 | 717 | 1058 | 1521 | 2028 | 2204 | 2205 |
250 | 10 | 0 | 108 | 271 | 478 | 735 | 1117 | 1650 | 2372 | 3163 | 3437 | 3438 |
300 | 12 | 0 | 166 | 415 | 731 | 1126 | 1710 | 2525 | 3630 | 4840 | 5261 | 5262 |
350 | 14 | 0 | 241 | 605 | 1065 | 1640 | 2491 | 3679 | 5288 | 7051 | 7664 | 7665 |
400 | 16 | 0 | 317 | 795 | 1400 | 2155 | 3272 | 4832 | 6946 | 9262 | 10067 | 10068 |
450 | 18 | 0 | 428 | 1072 | 1887 | 2904 | 4411 | 6514 | 9364 | 12486 | 13572 | 13573 |
500 | 20 | 0 | 538 | 1349 | 2374 | 3654 | 5550 | 7840 | 11579 | 16645 | 22194 | 24124 |
600 | 24 | 0 | 759.6 | 1906 | 3353 | 5163 | 7840 | 11579 | 16645 | 22194 | 24124 | 24125 |
Cv/d2-values
SIZE | Relative opening h |
DN | INCH | RN | 10 % | 20 % | 30 % | 40 % | 50 % | 60 % | 70 % | 80 % | 90 % | 100 % |
RN = Reduction Number |
100 | 4 | 0 | 0.128 | 0.151 | 0.187 | 0.22 | 0.256 | 0.288 | 0.313 | 0.335 | 0.359 | 0.376 |
150 | 6 | 0 | 0.132 | 0.155 | 0.185 | 0.216 | 0.252 | 0.291 | 0.315 | 0.339 | 0.364 | 0.383 |
200 | 8 | 0 | 0.088 | 0.124 | 0.161 | 0.198 | 0.239 | 0.282 | 0.32 | 0.35 | 0.377 | 0.398 |
250 | 10 | 0 | 0.088 | 0.124 | 0.161 | 0.199 | 0.24 | 0.284 | 0.32 | 0.349 | 0.375 | 0.396 |
300 | 12 | 0 | 0.1 | 0.133 | 0.168 | 0.204 | 0.245 | 0.288 | 0.322 | 0.35 | 0.376 | 0.396 |
350 | 14 | 0 | 0.088 | 0.124 | 0.159 | 0.197 | 0.24 | 0.284 | 0.322 | 0.352 | 0.378 | 0.4 |
400 | 16 | 0 | 0.088 | 0.124 | 0.159 | 0.197 | 0.24 | 0.284 | 0.322 | 0.352 | 0.378 | 0.4 |
450 | 18 | 0 | 0.088 | 0.124 | 0.159 | 0.197 | 0.24 | 0.284 | 0.322 | 0.352 | 0.378 | 0.4 |
500 | 20 | 0 | 0.088 | 0.124 | 0.159 | 0.197 | 0.24 | 0.284 | 0.322 | 0.352 | 0.378 | 0.4 |
600 | 24 | 0 | 0.088 | 0.124 | 0.159 | 0.197 | 0.24 | 0.284 | 0.322 | 0.352 | 0.378 | 0.4 |
FL-values
SIZE | Relative opening h |
DN | INCH | RN | 10 % | 20 % | 30 % | 40 % | 50 % | 60 % | 70 % | 80 % | 90 % | 100 % |
RN = Reduction Number |
100 | 4 | 0 | 0.86 | 0.86 | 0.85 | 0.85 | 0.83 | 0.82 | 0.79 | 0.76 | 0.74 | 0.73 |
150 | 6 | 0 | 0.86 | 0.86 | 0.85 | 0.83 | 0.82 | 0.79 | 0.76 | 0.73 | 0.69 | 0.68 |
200 | 8 | 0 | 0.86 | 0.85 | 0.84 | 0.82 | 0.8 | 0.77 | 0.74 | 0.7 | 0.65 | 0.63 |
250 | 10 | 0 | 0.86 | 0.85 | 0.84 | 0.82 | 0.8 | 0.77 | 0.74 | 0.7 | 0.65 | 0.63 |
300 | 12 | 0 | 0.86 | 0.85 | 0.84 | 0.82 | 0.8 | 0.77 | 0.74 | 0.69 | 0.64 | 0.61 |
350 | 14 | 0 | 0.86 | 0.85 | 0.84 | 0.82 | 0.79 | 0.76 | 0.73 | 0.68 | 0.61 | 0.58 |
400 | 16 | 0 | 0.86 | 0.85 | 0.84 | 0.82 | 0.79 | 0.76 | 0.73 | 0.68 | 0.61 | 0.58 |
450 | 18 | 0 | 0.86 | 0.85 | 0.83 | 0.81 | 0.79 | 0.76 | 0.72 | 0.66 | 0.59 | 0.55 |
500 | 20 | 0 | 0.86 | 0.85 | 0.83 | 0.81 | 0.78 | 0.75 | 0.72 | 0.66 | 0.58 | 0.53 |
600 | 24 | 0 | 0.86 | 0.85 | 0.83 | 0.81 | 0.79 | 0.76 | 0.72 | 0.66 | 0.59 | 0.55 |
XT-values
SIZE | Relative opening h |
DN | INCH | RN | 10 % | 20 % | 30 % | 40 % | 50 % | 60 % | 70 % | 80 % | 90 % | 100 % |
RN = Reduction Number |
100 | 4 | 0 | 0.53 | 0.53 | 0.53 | 0.53 | 0.53 | 0.52 | 0.51 | 0.47 | 0.43 | 0.42 |
150 | 6 | 0 | 0.53 | 0.53 | 0.53 | 0.53 | 0.52 | 0.5 | 0.46 | 0.41 | 0.37 | 0.36 |
200 | 8 | 0 | 0.53 | 0.53 | 0.53 | 0.53 | 0.52 | 0.48 | 0.43 | 0.38 | 0.33 | 0.31 |
250 | 10 | 0 | 0.53 | 0.53 | 0.53 | 0.53 | 0.52 | 0.48 | 0.43 | 0.38 | 0.33 | 0.31 |
300 | 12 | 0 | 0.53 | 0.53 | 0.53 | 0.53 | 0.51 | 0.47 | 0.42 | 0.37 | 0.32 | 0.29 |
350 | 14 | 0 | 0.53 | 0.53 | 0.53 | 0.52 | 0.51 | 0.46 | 0.41 | 0.36 | 0.3 | 0.27 |
400 | 16 | 0 | 0.53 | 0.53 | 0.53 | 0.52 | 0.51 | 0.46 | 0.41 | 0.36 | 0.3 | 0.27 |
450 | 18 | 0 | 0.53 | 0.53 | 0.53 | 0.52 | 0.5 | 0.45 | 0.4 | 0.34 | 0.27 | 0.24 |
500 | 20 | 0 | 0.53 | 0.53 | 0.53 | 0.52 | 0.5 | 0.45 | 0.4 | 0.34 | 0.27 | 0.22 |
600 | 24 | 0 | 0.53 | 0.53 | 0.53 | 0.52 | 0.5 | 0.45 | 0.4 | 0.34 | 0.27 | 0.24 |
z-values
SIZE | Relative opening h |
DN | INCH | RN | 10 % | 20 % | 30 % | 40 % | 50 % | 60 % | 70 % | 80 % | 90 % | 100 % |
RN = Reduction Number |
100 | 4 | 0 | 0.38 | 0.38 | 0.36 | 0.33 | 0.31 | 0.29 | 0.27 | 0.25 | 0.24 | 0.23 |
150 | 6 | 0 | 0.38 | 0.36 | 0.33 | 0.3 | 0.29 | 0.26 | 0.25 | 0.23 | 0.21 | 0.2 |
200 | 8 | 0 | 0.38 | 0.35 | 0.32 | 0.29 | 0.28 | 0.25 | 0.24 | 0.22 | 0.19 | 0.18 |
250 | 10 | 0 | 0.38 | 0.35 | 0.32 | 0.29 | 0.28 | 0.25 | 0.24 | 0.22 | 0.19 | 0.18 |
300 | 12 | 0 | 0.38 | 0.35 | 0.32 | 0.29 | 0.27 | 0.25 | 0.23 | 0.21 | 0.19 | 0.18 |
350 | 14 | 0 | 0.38 | 0.34 | 0.31 | 0.29 | 0.27 | 0.25 | 0.23 | 0.2 | 0.18 | 0.17 |
400 | 16 | 0 | 0.38 | 0.34 | 0.31 | 0.29 | 0.27 | 0.25 | 0.23 | 0.2 | 0.18 | 0.17 |
450 | 18 | 0 | 0.38 | 0.34 | 0.31 | 0.28 | 0.26 | 0.24 | 0.22 | 0.2 | 0.17 | 0.16 |
500 | 20 | 0 | 0.38 | 0.34 | 0.3 | 0.28 | 0.26 | 0.24 | 0.22 | 0.2 | 0.17 | 0.16 |
600 | 24 | 0 | 0.38 | 0.34 | 0.31 | 0.28 | 0.26 | 0.24 | 0.22 | 0.2 | 0.17 | 0.16 |
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File creation day: 22.4.2024 (day.month.year)