| Model: | ||
| Standard or Nonstandard: | Standard |
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| Material: | Casting |
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| Media: | Oil |
| PriceRange: | ||
| Structure: | Check |

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The development of the butterfly valve has been obviously shown on many fields of a variety of industries. And there are many specified series to meet the generally serious and complex specifications. Class 300 butterfly valve is one of the specified series, which occupies the general functions of the butterfly valve. It can be used to regulate or cut off the flow with a wide range of the available sizes. Some detailed specifications are listed in the following.
Class 300 - ISO PN50(PN25,PN40)
| Valve Size | H1 | H2 | A | L | Approximate Weight(kg) | ||||||
| inch | mm | Lug | Wafer | flanged (Short Pattern) | Lug | Wafer | Flanged Short(I) Short(II) | ||||
| 3" | 80 | 157 | 239 | 45 | 48 | 48 | 114 | 180 | 18 | 16 | 23 |
| 4" | 100 | 179 | 280 | 45 | 54 | 54 | 127 | 190 | 20 | 18 | 26 |
| 6" | 150 | 220 | 356 | 60 | 59 | 59 | 140 | 210 | 37 | 33 | 48 |
| 8" | 200 | 260 | 420 | 80 | 73 | 73 | 152 | 230 | 52 | 46 | 67 |
| 10" | 250 | 310 | 430 | 90 | 83 | 83 | 165 | 250 | 71 | 63 | 91 |
| 12" | 300 | 345 | 480 | 100 | 92 | 92 | 178 | 270 | 109 | 97 | 141 |
| 14" | 350 | 370 | 450 | 110 | 117 | 117 | 190 | 290 | 134 | 120 | 174 |
| 16" | 400 | 390 | 550 | 120 | 133 | 133 | 216 | 310 | 213 | 190 | 276 |
| 18" | 450 | 490 | 705 | 130 | 149 | 149 | 222 | 330 | 347 | 310 | 450 |
| 20" | 500 | 520 | 750 | 140 | 159 | 159 | 229 | 350 | 431 | 385 | 558 |
| 24" | 600 | 590 | 910 | 150 | 181 | 181 | 267 | 390 | 526 | 470 | 682 |