Explosion-proof electric butterfly valve refers to the closing piece (butterfly plate) for the disc, rotating around the valve shaft to open and close a valve, mainly in the pipeline to cut off and throttle role.
The disc is driven by the stem and can be opened and closed once if it is rotated 90°.The flow of medium can be controlled by changing the deflection Angle of the butterfly plate.Commonly used butterfly valves are sandwiched butterfly valve, lug butterfly valve and flange butterfly valve.Butterfly valve is suitable for the production of furnace, gas, natural gas, liquefied petroleum gas, city gas, hot and cold air, chemical smelting and power generation environmental protection, building water supply and drainage and other engineering systems to transport a variety of corrosive, non-corrosive fluid medium pipeline, used for regulating and cutting off the flow of medium.
1. The valve adopts double eccentric structure, with the sealing function of tighter and tighter closing, and reliable sealing performance;
2. The sealing accessory material is made of stainless steel and nitrile oil-resistant rubber, with a long service life;
3, rubber sealing ring can be located in the valve body, also can be located in the butterfly plate, can be suitable for different characteristics of media, for users to choose;
4, butterfly plate adopts frame structure, high strength, large flow area, small flow resistance;
5, the overall baking paint, can effectively prevent corrosion and as long as the replacement of sealing seat material, can be used in different media;
6, the valve body has a two-way sealing function, installation is not controlled by the flow direction of the medium, nor affected by the space position, can be installed in any direction;
7. The valve has unique structure, flexible operation, labor-saving and convenient.
Design specification: GB/T12238
Flange connection: GB/T9113, GB/T172416
Structure length: GB/T12221
Tests and inspection: GB/T13927
Main materials: WCB, QT450-10, HT200, HT250
Product specification: DN50~2000mm
Pressure class: PN0.6~ 1.6mpa
Suitable medium: water, air, natural gas, oil and weakly corrosive fluid
Applicable temperature: nitrile rubber -40℃~90℃, fluororubber -20℃~200℃
Driving mode: worm wheel drive, electric, pneumatic
DN |
Structure length (standard) |
Boundary dimensions (reference) | Flange dimensions (standard) | |||||||||||||||||||||||||||||||||||
L | H | D343H | D643H | D943H | PN0.25MPa | PN0.6MPa | PN1.0MPa | |||||||||||||||||||||||||||||||
mm | Inches | short | Long | H1 | A1 | B1 | H2 | A2 | B2 | H3 | A3 | B3 | D | D1 | Z-d | D | D1 | Z-d | D | D1 | Z-d | |||||||||||||||||
40 | 1 1/2 | 106 | 140 | 107 | 330 | 180 | 200 | 605 | 245 | 72 | 530 | 250 | 255 | 130 | 100 | 4-14 | 130 | 100 | 4-14 | 150 | 110 | 4-18 | ||||||||||||||||
50 | 2 | 108 | 150 | 112 | 350 | 180 | 200 | 625 | 245 | 72 | 530 | 250 | 255 | 140 | 110 | 4-14 | 140 | 110 | 4-14 | 165 | 125 | 4-18 | ||||||||||||||||
65 | 2 1/2 | 112 | 170 | 115 | 370 | 180 | 200 | 645 | 245 | 72 | 530 | 250 | 255 | 160 | 130 | 4-14 | 160 | 130 | 4-14 | 185 | 145 | 4-18 | ||||||||||||||||
80 | 3 | 114 | 180 | 120 | 380 | 180 | 200 | 675 | 355 | 92 | 565 | 250 | 255 | 190 | 150 | 4-18 | 190 | 150 | 4-18 | 200 | 160 | 8-18 | ||||||||||||||||
100 | 4 | 127 | 190 | 138 | 420 | 180 | 200 | 715 | 355 | 92 | 600 | 250 | 255 | 210 | 170 | 4-18 | 210 | 170 | 4-18 | 220 | 180 | 8-18 | ||||||||||||||||
125 | 5 | 140 | 200 | 164 | 460 | 180 | 200 | 800 | 355 | 92 | 640 | 250 | 255 | 240 | 200 | 8-18 | 240 | 200 | 8-18 | 250 | 210 | 8-18 | ||||||||||||||||
150 | 6 | 140 | 210 | 175 | 555 | 270 | 280 | 850 | 250 | 170 | 705 | 300 | 315 | 265 | 225 | 8-18 | 265 | 225 | 8-18 | 285 | 240 | 8-22 | ||||||||||||||||
200 | 8 | 152 | 230 | 200 | 760 | 400 | 425 | 925 | 250 | 170 | 775 | 300 | 315 | 320 | 280 | 8-18 | 320 | 280 | 8-18 | 340 | 295 | 8-22 | ||||||||||||||||
250 | 10 | 165 | 250 | 243 | 830 | 400 | 425 | 1035 | 450 | 220 | 945 | 300 | 315 | 375 | 335 | 12-18 | 375 | 335 | 12-18 | 395 | 350 | 12-22 | ||||||||||||||||
300 | 12 | 178 | 270 | 250 | 895 | 450 | 560 | 1070 | 450 | 220 | 1070 | 300 | 315 | 440 | 395 | 12-22 | 440 | 395 | 12-22 | 445 | 400 | 12-22 | ||||||||||||||||
350 | 14 | 190 | 290 | 280 | 950 | 450 | 560 | 1190 | 450 | 280 | 1140 | 300 | 315 | 490 | 445 | 12-22 | 490 | 445 | 12-22 | 505 | 460 | 16-22 | ||||||||||||||||
400 | 16 | 216 | 310 | 305 | 1190 | 535 | 580 | 1250 | 650 | 280 | 1210 | 300 | 315 | 540 | 495 | 16-22 | 540 | 495 | 16-22 | 565 | 515 | 16-26 | ||||||||||||||||
450 | 18 | 222 | 330 | 350 | 1255 | 535 | 580 | 1295 | 650 | 280 | 1335 | 575 | 714 | 595 | 550 | 16-22 | 595 | 550 | 16-22 | 615 | 565 | 20-26 | ||||||||||||||||
500 | 20 | 229 | 350 | 380 | 1305 | 535 | 580 | 1455 | 850 | 380 | 1415 | 575 | 714 | 645 | 600 | 20-22 | 645 | 600 | 20-22 | 670 | 620 | 20-26 | ||||||||||||||||
600 | 24 | 267 | 390 | 445 | 1340 | 570 | 660 | 1585 | 850 | 380 | 1605 | 656 | 810 | 755 | 705 | 20-26 | 755 | 705 | 20-26 | 780 | 725 | 20-30 | ||||||||||||||||
700 | 28 | 292 | 430 | 480 | 1520 | 750 | 550 | 1700 | 1250 | 380 | 1844 | 656 | 810 | 860 | 810 | 24-26 | 860 | 810 | 24-26 | 895 | 840 | 24-30 | ||||||||||||||||
800 | 32 | 318 | 470 | 530 | 1710 | 750 | 550 | 1865 | 1250 | 380 | 2040 | 656 | 810 | 975 | 920 | 24-30 | 975 | 920 | 24-30 | 1015 | 950 | 24-33 | ||||||||||||||||
900 | 36 | 330 | 510 | 580 | 1810 | 750 | 550 | 2015 | 1500 | 580 | 2255 | 785 | 863 | 1075 | 1020 | 24-30 | 1075 | 1020 | 24-30 | 1115 | 1050 | 28-33 | ||||||||||||||||
1000 | 40 | 410 | 550 | 650 | 1960 | 900 | 750 | 2226 | 1500 | 580 | 2380 | 785 | 863 | 1175 | 1120 | 28-30 | 1175 | 1120 | 28-30 | 1230 | 1160 | 28-36 | ||||||||||||||||
1200 | 48 | 470 | 630 | 760 | 2250 | 1000 | 925 | - | - | - | 2640 | 785 | 863 | 1375 | 1320 | 32-30 | 1405 | 1340 | 32-33 | 1455 | 1380 | 32-39 | ||||||||||||||||
1400 | 56 | 530 | 710 | 850 | 2435 | 1000 | 925 | - | - | - | 2886 | - | - | 1575 | 1520 | 36-30 | 1630 | 1560 | 36-36 | 1675 | 1590 | 36-42 | ||||||||||||||||
1600 | 64 | 600 | 790 | 1030 | 2780 | 1000 | 925 | - | - | - | 3156 | - | - | 1790 | 1730 | 40-30 | 1830 | 1760 | 40-36 | 1915 | 1820 | 40-48 | ||||||||||||||||
1800 | 72 | 670 | 870 | 1230 | 3020 | 1100 | 980 | - | - | - | 3421 | - | - | 1990 | 1930 | 44-30 | 2045 | 1970 | 44-39 | 2115 | 2020 | 44-48 | ||||||||||||||||
2000 | 80 | 760 | 950 | 1350 | 3270 | 1100 | 980 | - | - | - | 3685 | - | - | 2190 | 2130 | 48-30 | 2265 | 2180 | 48-42 | 2325 | 2230 | 48-48 |
DN |
Structure length (standard) |
Boundary dimensions (reference) | Flange dimensions (standard) | |||||||||||||||||||||||||||||||||||
L | H | D343H | D643H | D943H | PN1.6MPa | PN2.5MPa | ||||||||||||||||||||||||||||||||
mm | Inches | short | Long | H1 | A1 | B1 | H2 | A2 | B2 | H3 | A3 | B3 | D | D1 | Z-d | D | D1 | Z-d | ||||||||||||||||||||
50 | 2 | 108 | 150 | 112 | 350 | 180 | 200 | 625 | 245 | 72 | 530 | 250 | 255 | 165 | 125 | 4-18 | 165 | 125 | 4-18 | |||||||||||||||||||
65 | 2 1/2 | 112 | 170 | 115 | 370 | 180 | 200 | 625 | 245 | 72 | 530 | 250 | 255 | 185 | 145 | 4-18 | 185 | 145 | 8-18 | |||||||||||||||||||
80 | 3 | 114 | 180 | 120 | 380 | 180 | 200 | 645 | 245 | 72 | 565 | 250 | 255 | 200 | 160 | 8-18 | 200 | 160 | 8-18 | |||||||||||||||||||
100 | 4 | 127 | 190 | 138 | 420 | 180 | 200 | 675 | 355 | 92 | 600 | 250 | 255 | 220 | 180 | 8-18 | 235 | 190 | 8-22 | |||||||||||||||||||
125 | 5 | 140 | 200 | 164 | 460 | 180 | 200 | 715 | 355 | 92 | 640 | 250 | 255 | 250 | 210 | 8-18 | 270 | 220 | 8-26 | |||||||||||||||||||
150 | 6 | 140 | 210 | 175 | 555 | 270 | 280 | 800 | 355 | 92 | 705 | 300 | 315 | 285 | 240 | 8-22 | 300 | 250 | 8-26 | |||||||||||||||||||
200 | 8 | 152 | 230 | 200 | 760 | 400 | 425 | 850 | 250 | 170 | 775 | 300 | 315 | 340 | 295 | 12-22 | 360 | 310 | 12-26 | |||||||||||||||||||
250 | 10 | 165 | 250 | 243 | 830 | 400 | 425 | 925 | 250 | 170 | 945 | 300 | 315 | 405 | 355 | 12-26 | 425 | 370 | 12-30 | |||||||||||||||||||
300 | 12 | 178 | 270 | 250 | 895 | 450 | 560 | 1035 | 450 | 220 | 1070 | 300 | 315 | 460 | 410 | 12-26 | 485 | 430 | 16-30 | |||||||||||||||||||
350 | 14 | 190 | 290 | 280 | 950 | 450 | 560 | 1070 | 450 | 220 | 1140 | 300 | 315 | 520 | 470 | 16-26 | 555 | 490 | 16-33 | |||||||||||||||||||
400 | 16 | 216 | 310 | 305 | 1190 | 535 | 580 | 1190 | 450 | 220 | 1210 | 300 | 315 | 580 | 525 | 16-30 | 620 | 550 | 16-36 | |||||||||||||||||||
450 | 18 | 222 | 330 | 350 | 1255 | 535 | 580 | 1250 | 650 | 280 | 1335 | 575 | 714 | 640 | 585 | 20-30 | 670 | 600 | 20-36 | |||||||||||||||||||
500 | 20 | 229 | 350 | 380 | 1305 | 535 | 580 | 1290 | 650 | 280 | 1415 | 575 | 714 | 715 | 650 | 20-33 | 730 | 660 | 20-36 | |||||||||||||||||||
600 | 24 | 267 | 390 | 445 | 1340 | 570 | 660 | 1455 | 850 | 380 | 1605 | 656 | 810 | 840 | 770 | 20-36 | 845 | 770 | 20-39 | |||||||||||||||||||
700 | 28 | 292 | 430 | 480 | 1520 | 750 | 550 | 1585 | 850 | 380 | 1844 | 656 | 810 | 910 | 840 | 24-36 | 960 | 875 | 24-42 | |||||||||||||||||||
800 | 32 | 318 | 470 | 530 | 1710 | 750 | 550 | 1700 | 1250 | 380 | 2040 | 656 | 810 | 1025 | 950 | 24-39 | 1085 | 990 | 24-48 | |||||||||||||||||||
900 | 36 | 330 | 510 | 580 | 1810 | 750 | 550 | 1865 | 1250 | 380 | 2255 | 785 | 863 | 1125 | 1050 | 28-39 | 1185 | 1090 | 28-48 | |||||||||||||||||||
1000 | 40 | 410 | 550 | 650 | 1960 | 900 | 750 | 2015 | 1250 | 380 | 2380 | 785 | 863 | 1255 | 1170 | 28-42 | 1320 | 1210 | 28-56 | |||||||||||||||||||
1200 | 48 | 470 | 630 | 760 | 2250 | 1000 | 925 | 2250 | 1250 | 380 | 2640 | 785 | 863 | 1485 | 1390 | 32-48 | 1530 | 1420 | 32-56 | |||||||||||||||||||
1400 | 56 | 530 | 710 | 850 | 2435 | 1000 | 925 | - | - | - | 2886 | - | - | 1685 | 1590 | 36-48 | 1755 | 1640 | 36-62 | |||||||||||||||||||
1600 | 64 | 600 | 790 | 1030 | 2780 | 1000 | 925 | - | - | - | 3156 | - | - | 1930 | 1820 | 40-56 | 1975 | 1860 | 40-62 | |||||||||||||||||||
1800 | 72 | 670 | 870 | 1230 | 3020 | 1100 | 980 | - | - | - | 3421 | - | - | 2130 | 2020 | 44-56 | 2195 | 2070 | 44-70 | |||||||||||||||||||
2000 | 80 | 760 | 950 | 1350 | 3270 | 1100 | 980 | - | - | - | 3685 | - | - | 2345 | 2230 | 48-62 | 2425 | 2300 | 48-70 |