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| Series | Code | Description |
| L1 | LANSI150 | SERIES L1 HIGH PERFORMANCE TRIPLE ECCENTRIC METAL SEATED BUTTERFLY VALVE, PRESSURE CLASSES ASME150 & PN10-16 |
Patented Neles™ Neldisc™ triple-eccentric design is a key for meeting the challenges of control applications from simple to severe. The valve is very well suited for applications requiring large capacity and good rangeability at low differential pressures. Number of special constructions developed from the versatile Neldisc™ design offer a powerful tool for standardization. The same valve is excellent for shut-off in wide range of applications. Fully metallic seating is mechanically induced and does not rely on assistance from differential pressure. Temperature range available -200 ... +600 °C. Wafer (L1) and lug (L2) type bodies to fit ANSI 150 or DIN 10, 16 and 25 pipe flanges.
Cv-values
| SIZE | Relative opening h |
| DN | INCH | RN | 10 % | 20 % | 30 % | 40 % | 50 % | 60 % | 70 % | 80 % | 90 % | 100 % |
| RN = Reduction Number |
| 80 | 3 | 0 | 12.5 | 31.3 | 51 | 75 | 103 | 137 | 174 | 208 | 238 | 245 |
| 100 | 4 | 0 | 17 | 40.4 | 73 | 108 | 152 | 198 | 255 | 321 | 413 | 450 |
| 125 | 5 | 0 | 25 | 54.6 | 92 | 140 | 202 | 284 | 394 | 542 | 757 | 840 |
| 150 | 6 | 0 | 37.8 | 82.6 | 139 | 212 | 306 | 430 | 596 | 820 | 1116 | 1500 |
| 200 | 8 | 0 | 76.8 | 168 | 283 | 432 | 622 | 874 | 1212 | 1668 | 2268 | 3050 |
| 250 | 10 | 0 | 123 | 269 | 453 | 691 | 995 | 1398 | 1939 | 2669 | 3622 | 4870 |
| 300 | 12 | 0 | 184 | 403 | 680 | 1037 | 1492 | 2097 | 2909 | 4003 | 5429 | 7300 |
| 350 | 14 | 0 | 265 | 580 | 978 | 1492 | 2147 | 3018 | 4186 | 5762 | 7809 | 10500 |
| 400 | 16 | 0 | 346 | 756 | 1274 | 1944 | 2797 | 3931 | 5454 | 7506 | 10189 | 13700 |
| 450 | 18 | 0 | 442 | 966 | 1628 | 2484 | 3574 | 5023 | 6969 | 9591 | 13089 | 17600 |
| 500 | 20 | 0 | 550 | 1204 | 2030 | 3096 | 4455 | 6261 | 8686 | 11954 | 16287 | 21900 |
| 600 | 24 | 0 | 781 | 1708 | 2879 | 4392 | 6320 | 8882 | 12322 | 16958 | 23055 | 31000 |
| 700 | 28 | 0 | 992 | 2170 | 3658 | 5580 | 8029 | 11284 | 15655 | 21545 | 29227 | 39300 |
| 750 | 30 | 0 | 1180 | 2583 | 4354 | 6642 | 9557 | 13432 | 18635 | 25646 | 34880 | 46900 |
| 800 | 32 | 0 | 1354 | 2961 | 4991 | 7614 | 10956 | 15397 | 21362 | 29398 | 39682 | 53600 |
| 900 | 36 | 0 | 1674 | 3661 | 6171 | 9414 | 13546 | 19037 | 26412 | 36349 | 49382 | 66400 |
| 1000 | 40 | 0 | 2086 | 4564 | 7694 | 11736 | 16887 | 23733 | 32926 | 45314 | 61578 | 82800 |
| 1200 | 48 | 0 | 2922 | 6394 | 10779 | 16442 | 23658 | 33249 | 46128 | 63483 | 86269 | 116000 |
Cv/d2-values
| SIZE | Relative opening h |
| DN | INCH | RN | 10 % | 20 % | 30 % | 40 % | 50 % | 60 % | 70 % | 80 % | 90 % | 100 % |
| RN = Reduction Number |
| 80 | 3 | 0 | 0.128 | 0.151 | 0.187 | 0.22 | 0.256 | 0.291 | 0.315 | 0.339 | 0.364 | 0.383 |
| 100 | 4 | 0 | 0.117 | 0.146 | 0.181 | 0.215 | 0.252 | 0.288 | 0.313 | 0.335 | 0.359 | 0.376 |
| 125 | 5 | 0 | 0.117 | 0.146 | 0.181 | 0.215 | 0.252 | 0.288 | 0.313 | 0.335 | 0.359 | 0.376 |
| 150 | 6 | 0 | 0.128 | 0.151 | 0.187 | 0.22 | 0.256 | 0.291 | 0.315 | 0.339 | 0.364 | 0.383 |
| 200 | 8 | 0 | 0.098 | 0.128 | 0.16 | 0.196 | 0.236 | 0.28 | 0.323 | 0.36 | 0.389 | 0.41 |
| 250 | 10 | 0 | 0.087 | 0.12 | 0.153 | 0.191 | 0.233 | 0.278 | 0.322 | 0.361 | 0.39 | 0.413 |
| 300 | 12 | 0 | 0.086 | 0.119 | 0.152 | 0.19 | 0.232 | 0.278 | 0.322 | 0.361 | 0.391 | 0.414 |
| 350 | 14 | 0 | 0.086 | 0.119 | 0.153 | 0.191 | 0.233 | 0.278 | 0.323 | 0.361 | 0.392 | 0.414 |
| 400 | 16 | 0 | 0.086 | 0.119 | 0.153 | 0.191 | 0.233 | 0.278 | 0.323 | 0.361 | 0.392 | 0.414 |
| 450 | 18 | 0 | 0.086 | 0.118 | 0.151 | 0.19 | 0.232 | 0.277 | 0.322 | 0.362 | 0.392 | 0.415 |
| 500 | 20 | 0 | 0.08 | 0.114 | 0.148 | 0.187 | 0.23 | 0.276 | 0.322 | 0.361 | 0.413 | 0.415 |
| 600 | 24 | 0 | 0.078 | 0.114 | 0.149 | 0.189 | 0.231 | 0.278 | 0.323 | 0.361 | 0.392 | 0.415 |
| 700 | 28 | 0 | 0.082 | 0.116 | 0.151 | 0.191 | 0.233 | 0.279 | 0.325 | 0.362 | 0.392 | 0.414 |
| 750 | 30 | 0 | 0.082 | 0.116 | 0.151 | 0.191 | 0.233 | 0.279 | 0.325 | 0.362 | 0.392 | 0.414 |
| 800 | 32 | 0 | 0.082 | 0.116 | 0.151 | 0.191 | 0.233 | 0.279 | 0.325 | 0.362 | 0.392 | 0.414 |
| 900 | 36 | 0 | 0.082 | 0.116 | 0.151 | 0.191 | 0.233 | 0.279 | 0.325 | 0.362 | 0.392 | 0.414 |
| 1000 | 40 | 0 | 0.082 | 0.116 | 0.151 | 0.191 | 0.233 | 0.279 | 0.325 | 0.362 | 0.392 | 0.414 |
| 1200 | 48 | 0 | 0.082 | 0.116 | 0.151 | 0.191 | 0.233 | 0.279 | 0.325 | 0.362 | 0.392 | 0.414 |
FL-values
| SIZE | Relative opening h |
| DN | INCH | RN | 10 % | 20 % | 30 % | 40 % | 50 % | 60 % | 70 % | 80 % | 90 % | 100 % |
| RN = Reduction Number |
| 80 | 3 | 0 | 0.87 | 0.85 | 0.83 | 0.8 | 0.77 | 0.73 | 0.69 | 0.66 | 0.63 | 0.62 |
| 100 | 4 | 0 | 0.87 | 0.86 | 0.84 | 0.82 | 0.79 | 0.76 | 0.73 | 0.69 | 0.64 | 0.62 |
| 125 | 5 | 0 | 0.87 | 0.86 | 0.84 | 0.83 | 0.81 | 0.77 | 0.73 | 0.67 | 0.6 | 0.56 |
| 150 | 6 | 0 | 0.87 | 0.86 | 0.84 | 0.82 | 0.8 | 0.76 | 0.72 | 0.66 | 0.59 | 0.48 |
| 200 | 8 | 0 | 0.87 | 0.85 | 0.84 | 0.82 | 0.79 | 0.75 | 0.7 | 0.63 | 0.54 | 0.43 |
| 250 | 10 | 0 | 0.87 | 0.85 | 0.84 | 0.82 | 0.78 | 0.75 | 0.69 | 0.63 | 0.54 | 0.42 |
| 300 | 12 | 0 | 0.87 | 0.85 | 0.83 | 0.81 | 0.78 | 0.74 | 0.69 | 0.62 | 0.52 | 0.4 |
| 350 | 14 | 0 | 0.87 | 0.85 | 0.83 | 0.81 | 0.77 | 0.73 | 0.67 | 0.6 | 0.5 | 0.37 |
| 400 | 16 | 0 | 0.87 | 0.85 | 0.83 | 0.81 | 0.77 | 0.73 | 0.67 | 0.61 | 0.5 | 0.37 |
| 450 | 18 | 0 | 0.87 | 0.85 | 0.83 | 0.81 | 0.77 | 0.73 | 0.67 | 0.6 | 0.49 | 0.36 |
| 500 | 20 | 0 | 0.87 | 0.85 | 0.83 | 0.81 | 0.77 | 0.73 | 0.67 | 0.6 | 0.49 | 0.36 |
| 600 | 24 | 0 | 0.87 | 0.85 | 0.83 | 0.81 | 0.77 | 0.73 | 0.67 | 0.6 | 0.5 | 0.37 |
| 700 | 28 | 0 | 0.87 | 0.85 | 0.83 | 0.81 | 0.78 | 0.74 | 0.69 | 0.62 | 0.53 | 0.4 |
| 750 | 30 | 0 | 0.87 | 0.85 | 0.83 | 0.81 | 0.78 | 0.74 | 0.68 | 0.61 | 0.51 | 0.38 |
| 800 | 32 | 0 | 0.87 | 0.85 | 0.83 | 0.81 | 0.78 | 0.74 | 0.68 | 0.61 | 0.51 | 0.38 |
| 900 | 36 | 0 | 0.87 | 0.85 | 0.83 | 0.81 | 0.78 | 0.74 | 0.68 | 0.62 | 0.52 | 0.39 |
| 1000 | 40 | 0 | 0.87 | 0.85 | 0.83 | 0.81 | 0.78 | 0.74 | 0.68 | 0.61 | 0.51 | 0.39 |
| 1200 | 48 | 0 | 0.87 | 0.85 | 0.83 | 0.81 | 0.78 | 0.74 | 0.69 | 0.62 | 0.52 | 0.4 |
XT-values
| SIZE | Relative opening h |
| DN | INCH | RN | 10 % | 20 % | 30 % | 40 % | 50 % | 60 % | 70 % | 80 % | 90 % | 100 % |
| RN = Reduction Number |
| 80 | 3 | 0 | 0.53 | 0.53 | 0.53 | 0.51 | 0.47 | 0.42 | 0.37 | 0.34 | 0.3 | 0.3 |
| 100 | 4 | 0 | 0.53 | 0.53 | 0.53 | 0.52 | 0.49 | 0.45 | 0.41 | 0.37 | 0.31 | 0.29 |
| 125 | 5 | 0 | 0.53 | 0.53 | 0.53 | 0.53 | 0.52 | 0.47 | 0.41 | 0.35 | 0.27 | 0.24 |
| 150 | 6 | 0 | 0.53 | 0.53 | 0.53 | 0.53 | 0.51 | 0.46 | 0.4 | 0.34 | 0.26 | 0.18 |
| 200 | 8 | 0 | 0.53 | 0.53 | 0.53 | 0.52 | 0.49 | 0.44 | 0.38 | 0.31 | 0.23 | 0.15 |
| 250 | 10 | 0 | 0.53 | 0.53 | 0.53 | 0.52 | 0.49 | 0.43 | 0.37 | 0.3 | 0.22 | 0.14 |
| 300 | 12 | 0 | 0.53 | 0.53 | 0.53 | 0.52 | 0.48 | 0.42 | 0.37 | 0.29 | 0.21 | 0.13 |
| 350 | 14 | 0 | 0.53 | 0.53 | 0.53 | 0.52 | 0.47 | 0.41 | 0.35 | 0.28 | 0.2 | 0.12 |
| 400 | 16 | 0 | 0.53 | 0.53 | 0.53 | 0.52 | 0.47 | 0.41 | 0.35 | 0.28 | 0.2 | 0.12 |
| 450 | 18 | 0 | 0.53 | 0.53 | 0.53 | 0.52 | 0.47 | 0.41 | 0.35 | 0.27 | 0.19 | 0.11 |
| 500 | 20 | 0 | 0.53 | 0.53 | 0.53 | 0.52 | 0.47 | 0.41 | 0.35 | 0.27 | 0.19 | 0.11 |
| 600 | 24 | 0 | 0.53 | 0.53 | 0.53 | 0.52 | 0.47 | 0.41 | 0.35 | 0.28 | 0.2 | 0.12 |
| 700 | 28 | 0 | 0.53 | 0.53 | 0.53 | 0.52 | 0.48 | 0.43 | 0.37 | 0.29 | 0.22 | 0.14 |
| 750 | 30 | 0 | 0.53 | 0.53 | 0.53 | 0.52 | 0.48 | 0.42 | 0.36 | 0.28 | 0.2 | 0.13 |
| 800 | 32 | 0 | 0.53 | 0.53 | 0.53 | 0.52 | 0.48 | 0.42 | 0.36 | 0.28 | 0.2 | 0.12 |
| 900 | 36 | 0 | 0.53 | 0.53 | 0.53 | 0.52 | 0.48 | 0.42 | 0.36 | 0.29 | 0.21 | 0.13 |
| 1000 | 40 | 0 | 0.53 | 0.53 | 0.53 | 0.52 | 0.48 | 0.42 | 0.36 | 0.29 | 0.21 | 0.13 |
| 1200 | 48 | 0 | 0.53 | 0.53 | 0.53 | 0.52 | 0.48 | 0.43 | 0.37 | 0.29 | 0.21 | 0.14 |
z-values
| SIZE | Relative opening h |
| DN | INCH | RN | 10 % | 20 % | 30 % | 40 % | 50 % | 60 % | 70 % | 80 % | 90 % | 100 % |
| RN = Reduction Number |
| 80 | 3 | 0 | 0.38 | 0.33 | 0.3 | 0.27 | 0.25 | 0.23 | 0.21 | 0.2 | 0.18 | 0.18 |
| 100 | 4 | 0 | 0.38 | 0.35 | 0.32 | 0.29 | 0.26 | 0.24 | 0.23 | 0.21 | 0.19 | 0.18 |
| 125 | 5 | 0 | 0.38 | 0.36 | 0.33 | 0.3 | 0.28 | 0.25 | 0.23 | 0.2 | 0.17 | 0.16 |
| 150 | 6 | 0 | 0.38 | 0.36 | 0.33 | 0.3 | 0.27 | 0.25 | 0.23 | 0.2 | 0.17 | 0.14 |
| 200 | 8 | 0 | 0.38 | 0.35 | 0.32 | 0.29 | 0.26 | 0.24 | 0.21 | 0.18 | 0.15 | 0.13 |
| 250 | 10 | 0 | 0.38 | 0.35 | 0.32 | 0.29 | 0.26 | 0.24 | 0.21 | 0.18 | 0.15 | 0.12 |
| 300 | 12 | 0 | 0.38 | 0.35 | 0.32 | 0.29 | 0.26 | 0.23 | 0.21 | 0.18 | 0.15 | 0.12 |
| 350 | 14 | 0 | 0.38 | 0.34 | 0.31 | 0.28 | 0.25 | 0.23 | 0.2 | 0.17 | 0.14 | 0.11 |
| 400 | 16 | 0 | 0.38 | 0.34 | 0.31 | 0.28 | 0.25 | 0.23 | 0.2 | 0.17 | 0.14 | 0.11 |
| 450 | 18 | 0 | 0.38 | 0.34 | 0.31 | 0.28 | 0.25 | 0.23 | 0.2 | 0.17 | 0.14 | 0.11 |
| 500 | 20 | 0 | 0.38 | 0.34 | 0.31 | 0.28 | 0.25 | 0.23 | 0.2 | 0.17 | 0.14 | 0.11 |
| 600 | 24 | 0 | 0.38 | 0.34 | 0.31 | 0.28 | 0.25 | 0.23 | 0.2 | 0.17 | 0.14 | 0.11 |
| 700 | 28 | 0 | 0.38 | 0.35 | 0.32 | 0.29 | 0.26 | 0.24 | 0.21 | 0.18 | 0.15 | 0.12 |
| 750 | 30 | 0 | 0.38 | 0.34 | 0.31 | 0.28 | 0.25 | 0.23 | 0.21 | 0.18 | 0.15 | 0.12 |
| 800 | 32 | 0 | 0.38 | 0.34 | 0.31 | 0.28 | 0.25 | 0.23 | 0.2 | 0.17 | 0.15 | 0.12 |
| 900 | 36 | 0 | 0.38 | 0.34 | 0.31 | 0.29 | 0.26 | 0.23 | 0.21 | 0.18 | 0.15 | 0.12 |
| 1000 | 40 | 0 | 0.38 | 0.34 | 0.31 | 0.28 | 0.26 | 0.23 | 0.21 | 0.18 | 0.15 | 0.12 |
| 1200 | 48 | 0 | 0.38 | 0.35 | 0.32 | 0.29 | 0.26 | 0.24 | 0.21 | 0.18 | 0.15 | 0.12 |
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File creation day: 13.1.2025 (day.month.year)