Butterfly valve
Manual butterfly valves, rectangular manual butterfly valves, rectangular butterfly valves are widely used in industries such as building materials, glass, mining, power, light industry and papermaking. They are important equipment for two-way opening and closing and regulating the flow of media in pipelines, which is adjusted according to different working conditions to meet the needs of pipeline process operation.
Structural characteristics
The manual butterfly valve is welded from steel plate, with a novel design, simple and practical structure, small volume, light weight, small flow resistance, small opening and closing torque, easy and reliable adjustment, clear and accurate opening indication, easy to observe and operate, and can effectively control gas flow. It is an ideal adjustment device in various air duct systems.
Performance parameter
Nominal pressure | Medium velocity | Leakage ratio | Suitable temperature | Suitable medium |
0.05MPa | ≤ 28 m/s | ≤ 1.5 % | ≤ 300℃ |
Air, gas with powder etc |
External connection dimensions:
DN | D | D1 | B | b | n-d | E | E1 | H | H1 |
100 | 160 | 135 | 80 | 4 | 4- Φ 10 | 140 | 180 | 150 | 200 |
120 | 180 | 155 | 80 | 4 | 4- Φ 10 | 145 | 190 | 150 | 200 |
125 | 185 | 160 | 80 | 4 | 4- Φ 10 | 148 | 193 | 150 | 200 |
130 | 190 | 165 | 80 | 4 | 8- Φ 10 | 150 | 195 | 150 | 200 |
140 | 200 | 175 | 80 | 4 | 8- Φ 10 | 155 | 205 | 150 | 200 |
150 | 210 | 185 | 80 | 4 | 8- Φ 10 | 160 | 210 | 150 | 200 |
160 | 220 | 195 | 80 | 4 | 8- Φ 10 | 165 | 215 | 200 | 200 |
180 | 240 | 215 | 80 | 4 | 8- Φ 10 | 175 | 225 | 200 | 200 |
200 | 260 | 235 | 80 | 4 | 8- Φ 10 | 185 | 235 | 200 | 200 |
220 | 280 | 255 | 80 | 4 | 8- Φ 10 | 210 | 347 | 200 | 200 |
250 | 310 | 285 | 100 | 6 | 12- Φ 10 | 225 | 365 | 350 | 200 |
280 | 340 | 315 | 100 | 6 | 12- Φ 10 | 240 | 380 | 350 | 200 |
320 | 380 | 355 | 100 | 6 | 12- Φ 10 | 260 | 400 | 350 | 200 |
360 | 440 | 405 | 120 | 8 | 16- Φ 12 | 280 | 420 | 350 | 200 |
390 | 470 | 435 | 120 | 8 | 16- Φ 12 | 295 | 435 | 350 | 200 |
400 | 480 | 445 | 120 | 8 | 16- Φ 12 | 300 | 440 | 450 | 250 |
450 | 530 | 495 | 120 | 8 | 16- Φ 12 | 325 | 465 | 450 | 250 |
500 | 580 | 545 | 120 | 8 | 20- Φ 12 | 350 | 490 | 450 | 250 |
560 | 640 | 605 | 120 | 8 | 20- Φ 12 | 380 | 520 | 450 | 250 |
600 | 680 | 645 | 120 | 8 | 20- Φ 12 | 420 | 540 | 600 | 250 |
630 | 710 | 675 | 120 | 8 | 20- Φ 12 | 435 | 555 | 600 | 250 |
700 | 780 | 745 | 140 | 8 | 20- Φ 12 | 470 | 612 | 600 | 250 |
800 | 880 | 845 | 140 | 8 | 24- Φ 12 | 520 | 665 | 600 | 250 |
900 | 980 | 945 | 140 | 8 | 24- Φ 12 | 570 | 715 | 600 | 250 |
1000 | 1100 | 1055 | 160 | 10 | 28- Φ 14 | 620 | 845 | 600 | 250 |
1120 | 1220 | 1175 | 160 | 10 | 28- Φ 14 | 680 | 905 | 600 | 250 |
1200 | 1300 | 1255 | 160 | 10 | 28- Φ 14 | 720 | 945 | 600 | 250 |