The ventilation butterfly valve uses manual lever mechanism or electric device to rotate
Application of ventilation butterfly valve d341w
Ventilation butterfly valve is a kind of non airtight butterfly valve, which is widely used in building materials, metallurgy, mining, electric power and other production industries. It is suitable for pipes with medium temperature ≤ 425 ℃ and nominal pressure of 0.1MPa to regulate medium flow by ventilation.
Execution standard of ventilation butterfly valve d341w
| Design and manufacture | Flange connection | Structural length | Test and inspection |
| JB/T8692 | GB/T9113、JB/T79、HG/T20529、EN1092-1、ASME B16.5/B16.47 | GB/T12221 | GB/T13927、JB/T9092 |
Main technical parameters of ventilation butterfly valve d341w
| Nominal diameter | DN（mm） | 50~2000 |
| Nominal pressure | PN（mm） | 0.25 | 0.6 |
| Test pressure（MPa） | strength test | 0.375 | 0.9 |
| Sealing test | 0.275 | 0.66 |
| Applicable media | Gas, dust gas, flue gas |
| Driving form | Manual, worm gear drive, pneumatic drive, electric drive |
Material of main parts of ventilation butterfly valve d341w
| Part name | Material Science |
| Valve plate | Cast steel, stainless steel, chromium nickel molybdenum titanium steel, chromium molybdenum titanium steel and other special materials |
| Disc | Cast steel, alloy steel, chromium nickel molybdenum titanium steel and other special materials |
| seal ring | Cast steel, stainless steel, chromium nickel molybdenum titanium steel, chromium molybdenum titanium steel and other special materials |
| Stem | 20cr13, stainless steel, Cr Ni Mo Ti steel 20cr13 |
| filler | Fluoroplastics, flexible graphite |
Material selection and applicable temperature of ventilation butterfly valve d341w
| Material variety | carbon steel | Low temperature carbon steel | Alloy steel | austenitic stainless steel | Chromium molybdenum steel |
| Code name | WCB | LCB | WC6/WC9 | C5/C12 | 铬Cr-18型304、316 | 12CrMoV |
| Maximum temperature resistance | 425℃ | 345℃ | 595℃ | 650℃ | 600℃ | 560℃ |
| Minimum temperature resistance | -29℃ | -46℃ | -29℃ | -29℃ | -196℃ | -40℃ |
| Applicable operating temperature | ≤425℃ | ≤345℃ | ≤595℃ | ≤650℃ | ≤600℃ | ≤560℃ |
Design drawing of ventilation butterfly valve d341w
Main external connection dimensions of pn0.25mpa-pn0.6mpa ventilation butterfly valve d341w
| Nominal diameter | Standard value of structure length | Overall dimension (reference value) | Connection size (standard value) |
| 0.25MPa | 0.6MPa |
| mm | inches | L | H | H0 | A | B | D | D1 | D2 | Z-d | D | D1 | D2 | Z-d |
| 50 | 2 | 108 | 70 | 286 | 125 | 193 | 140 | 110 | 88 | 4-14 | 140 | 110 | 88 | 4-14 |
| 65 | 2½ | 112 | 80 | 306 | 125 | 193 | 160 | 130 | 108 | 4-14 | 160 | 130 | 108 | 4-14 |
| 80 | 3 | 114 | 95 | 334 | 125 | 193 | 190 | 150 | 124 | 4-18 | 190 | 150 | 124 | 4-18 |
| 100 | 4 | 120 | 105 | 354 | 125 | 193 | 210 | 170 | 144 | 4-18 | 210 | 170 | 144 | 4-18 |
| 125 | 5 | 120 | 120 | 384 | 125 | 193 | 240 | 200 | 174 | 8-18 | 240 | 200 | 174 | 8-18 |
| 150 | 6 | 120 | 132 | 409 | 125 | 193 | 265 | 225 | 199 | 8-18 | 265 | 225 | 199 | 8-18 |
| 200 | 8 | 140 | 160 | 593 | 165 | 183 | 320 | 280 | 254 | 8-18 | 320 | 280 | 254 | 8-18 |
| 250 | 10 | 140 | 187 | 650 | 165 | 283 | 375 | 335 | 309 | 12-18 | 375 | 335 | 309 | 12-18 |
| 300 | 12 | 170 | 220 | 715 | 165 | 283 | 440 | 395 | 363 | 12-22 | 440 | 395 | 363 | 12-22 |
| 350 | 14 | 170 | 245 | 814 | 175 | 335 | 490 | 445 | 413 | 12-22 | 490 | 445 | 413 | 12-22 |
| 400 | 16 | 190 | 270 | 863 | 175 | 334 | 540 | 495 | 463 | 16-22 | 540 | 495 | 463 | 12-22 |
| 450 | 18 | 190 | 297 | 918 | 175 | 334 | 595 | 550 | 518 | 16-22 | 595 | 550 | 518 | 16-22 |
| 500 | 20 | 190 | 322 | 1016 | 210 | 425 | 645 | 600 | 568 | 20-22 | 645 | 600 | 568 | 20-22 |
| 600 | 24 | 210 | 377 | 1128 | 210 | 425 | 755 | 705 | 667 | 20-26 | 755 | 705 | 667 | 20-26 |
| 700 | 28 | 210 | 430 | 1233 | 210 | 425 | 860 | 810 | 722 | 24-26 | 890 | 810 | 772 | 24-26 |
| 800 | 32 | 210 | 487 | 1344 | 210 | 425 | 975 | 920 | 878 | 24-30 | 975 | 920 | 878 | 24-30 |
| 900 | 36 | 250 | 537 | 1560 | 320 | 620 | 1075 | 1020 | 978 | 24-30 | 1075 | 1020 | 978 | 24-30 |
| 1000 | 40 | 250 | 587 | 1660 | 320 | 620 | 1175 | 1120 | 1078 | 28-30 | 1175 | 1120 | 1078 | 28-30 |
| 1200 | 48 | 250 | 687 | 1890 | 320 | 620 | 1375 | 1320 | 1280 | 32-30 | 1405 | 1340 | 1295 | 32-33 |
| 1400 | 56 | 300 | 760 | 2670 | 575 | 714 | 1575 | 1520 | 1480 | 36-30 | 1630 | 1560 | 1510 | 36-36 |
| 1600 | 64 | 300 | 895 | 2810 | 575 | 714 | 1790 | 1730 | 1690 | 40-30 | 1830 | 1760 | 1710 | 40-36 |
| 1800 | 72 | 300 | 995 | 2020 | 575 | 714 | 1990 | 1930 | 1890 | 44-30 | 2045 | 1970 | 1918 | 44-39 |
| 2000 | 80 | 300 | 1095 | 3220 | 656 | 810 | 2190 | 2130 | 2090 | 48-30 | 2265 | 2180 | 2125 | 48-42 |
