Ventilating butterfly valve
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entilating butterfly valveCharacteristic 1, convenient opening and closing rapidly, labor saving, small fluid resistance, can often operate.
In 2, and has the advantages of simple structure, small volume, light weight.
In 3, can be transported slurry, a port in the conduit at least accumulate liquid.
In 4, under low pressure, can achieve a good seal.
5, good regulation performance.
Using standard
1, design standards: GB/T12238-1989 JB/T8692-1998
2, flange connection dimension: GB/T9115.1-2000
In 3, the length of the structure h:GB/T12221-1989
4, pressure test: GB/T13927-1992; JB/T9092-1999
Technical parameters
Nominal diameter of DN (mm) 50 ~ 2000
Nominal pressure PN (Mpa) 0.05 0.25 0.6
Test pressure strength test 0.075 0.375 0.9
Sealing test ≤ 1.5% leakage
Applicable medium gas, including the dust gas, flue gas
Application of temperature gas drive, electric drive.
Materials for main parts
Part name | Valve body | Valve plate | Valve shaft |
Material science | Carbon steel | Carbon steel | Carbon steel |
Stainless steel | Chromium nickel molybdenum steel | Chromium molybdenum steel |
Chromium nickel molybdenum steel | Stainless steel | Stainless steel |
Chromium molybdenum steel | Chromium molybdenum steel | 2Cr13 |
Connecting flange size
DN | D | D1 | L | L1 | L2 | N- Ф D | B |
300 | 405 | 370 | 120 | 716 | 220 | 8-12 | 10 |
350 | 455 | 420 | 140 | 786 | 240 | 8-14 | 10 |
400 | 505 | 470 | 140 | 924 | 270 | 12-18 | 10 |
450 | 570 | 530 | 160 | 999 | 295 | 12-18 | 10 |
500 | 620 | 580 | 160 | 1079 | 325 | 12-18 | 10 |
600 | 720 | 680 | 180 | 1140 | 380 | 16-18 | 12 |
700 | 820 | 780 | 180 | 1240 | 430 | 16-18 | 12 |
800 | 920 | 880 | 200 | 1350 | 490 | 16-18 | 12 |
900 | 1040 | 990 | 200 | 1450 | 540 | 16-18 | 14 |
1000 | 1140 | 1090 | 220 | 1550 | 590 | 20-18 | 14 |
1100 | 1240 | 1190 | 220 | 1800 | 640 | 20-18 | 14 |
1200 | 1340 | 1290 | 240 | 1900 | 690 | 20-18 | 14 |
1300 | 1440 | 1390 | 240 | 2020 | 760 | 20-18 | 16 |
1400 | 1540 | 1490 | 260 | 2120 | 810 | 24-18 | 16 |
1500 | 1640 | 1590 | 260 | 2220 | 860 | 24-18 | 16 |
1600 | 1740 | 1690 | 280 | 2390 | 980 | 24-18 | 16 |
1700 | 1840 | 1790 | 280 | 2590 | 1030 | 28-22 | 16 |
1800 | 1940 | 1890 | 300 | 2709 | 1096 | 28-22 | 16 |
1900 | 2040 | 1990 | 300 | 2826 | 1146 | 32-22 | 16 |
2000 | 2150 | 2090 | 320 | 2926 | 1196 | 32-26 | 16 |
2200 | 2360 | 2300 | 340 | 3126 | 1296 | 36-26 | 16 |
2400 | 2560 | 2500 | 360 | 3326 | 1396 | 36-26 | 18 |
2600 | 2760 | 2700 | 380 | 3526 | 1496 | 40-26 | 18 |
2800 | 2960 | 2900 | 400 | 3726 | 1596 | 40-26 | 18 |
3000 | 3190 | 3110 | 400 | 4098 | 1698 | 44-30 | 18 |
3200 | 3390 | 3310 | 440 | 4338 | 1798 | 44-30 | 20 |
3400 | 3590 | 3510 | 440 | 4578 | 1898 | 48-30 | 20 |
3600 | 3790 | 3710 | 480 | 4780 | 1998 | 48-30 | 20 |
3800 | 4000 | 3910 | 480 | 5000 | 2098 | 52-30 | 22 |
4000 | 4210 | 4120 | 520 | 5200 | 2210 | 52-30 | 22 |