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Large diameter metal seal butterfly valve
Model: D343H / Y
Nominal diameter: DN50 ~ 2000mm
Nominal pressure: PN0.6 ~ 4.0MPa
Temperature: -40 ℃ ~ 570 ℃
Suitable medium: water, oil, steam, gas, acid, alkali and other
Manufacturing standards: GB / T 122387-89
Flange standard: GB9113-2000, GB17241.6-1998
Construction length standard: GB12221-89
Test standard: GB / T 13927-92
Product details

First,large diameter metal seal butterfly valve Description: 
D343H, D343Y, D341H PN6 ~ PN40 multi-level hard-seal butterfly valve installed in the petroleum, chemical, food, medicine, textile, paper, water and electricity, ships, water supply and drainage, smelting and other systems , In all water, gas, oil, semi-fluid and solid powder pipelines and containers used as regulation and closure, can be installed in any horizontal or vertical pipelines. D343H Turbine metal hard sealing butterfly valve than the soft rubber sealing butterfly valve to help long life, the valve is usually carbon steel or stainless steel.

Second, large diameter metal seal butterfly valve main performance parameters:

Nominal diameter DN 50 ~ 2000mm
Nominal pressure 0.6MPa 1.0MPa 1.6MPa 2.5MPa 4.0MPa
Test pressure PsMPa Strength test 0.9 1.5 2.4 3.75 6.0
Seal test 0.66 1.1 1.76 2.75 4.4
Gas seal test 0.5 ~ 0.8 MPa
Suitable media Water, oil, steam, gas, acid, alkali and so on
proper temperature -40 ℃ ~ 570 ℃


Third, large diameter metal seal butterfly valve main shape and connection dimensions:

D343H-10C, D343Y-10C, D341H-10C Worm Flanged Hard Sealing Butterfly Valve Connection Size:

The way to Main dimensions 0.25MPa 0.6MPa 1.0M Pa
mm inch L H H 1 D D 1 Z-φd b × f D D1 Z-φd b × f D D1 Z-φ d b × f
50 2 108 75 200 140 110 4-φ14 16 × 3 140 110 4-φ14 16 × 3 165 125 4-φ18 20 × 3
65 2-1 / 2 112 93 210 160 130 4-φ14 16 × 3 160 130 4-φ14 16 × 3 185 145 4-φ18 20 × 3
80 3 114 98 226 190 150 4-φ18 18 × 3 190 150 4-φ18 18 × 3 200 160 8-φ18 20 × 3
100 4 127 130 250 210 170 4-φ18 18 × 3 210 170 4-φ18 18 × 3 220 180 8-φ18 22 × 3
125 5 140 165 295 240 200 8-φ18 20 × 3 240 200 8-φ18 20 × 3 250 210 8-φ18 22 × 3
150 6 140 175 315 260 225 8-φ18 20 × 3 265 225 8-φ18 20 × 3 285 240 8-φ22 24 × 3
200 8 152 220 380 320 280 8-φ18 22 × 3 320 280 8-φ18 22 × 3 340 295 8-φ22 24 × 3
250 10 165 250 405 375 335 12-φ18 24 × 3 375 335 12-φ18 24 × 3 395 350 12-φ22 26 × 3
300 12 178 300 480 440 395 12-φ22 24 × 4 440 395 12-φ22 24 × 4 445 400 12-φ22 26 × 4
350 14 190 330 545 490 445 12-φ22 24 × 4 490 445 12-φ22 24 × 4 505 460 16-φ22 26 × 4
400 16 216 360 550 540 495 16-φ22 24 × 4 540 495 16-φ22 24 × 4 565 515 16-φ26 26 × 4
450 18 222 380 620 595 550 16-φ22 24 × 4 595 550 16-φ22 24 × 4 615 565 20-φ26 28 × 4
500 20 229 410 680 645 600 20-φ22 26 × 4 645 600 20-φ22 26 × 4 670 620 20-φ26 28 × 4
600 24 267 460 750 755 705 20-φ26 26 × 5 755 705 20-φ26 26 × 5 780 725 20-φ30 30 × 4
700 28 292 530 820 860 810 24-φ26 26 × 5 860 810 24-φ26 26 × 5 895 840 24-φ30 30 × 5
800 32 318 610 910 975 920 24-φ30 26 × 5 975 920 24-φ30 26 × 5 1015 950 24-φ33 32 × 5
900 36 330 640 930 1075 1020 24-φ30 26 × 5 1075 1020 24-φ30 26 × 5 1115 1050 28-φ33 34 × 5
1000 40 410 720 980 1175 1120 28-φ30 26 × 5 1175 1120 28-φ30 26 × 5 1230 1160 28-φ36 34 × 5
1200 48 470 820 1220 1375 1320 32-φ30 26 × 5 1405 1340 32-φ33 28 × 5 1455 1380 32-φ39 38 × 5
1400 56 530 930 1310 1575 1520 36-φ30 26 × 5 1630 1560 36-φ36 32 × 5 1675 1590 36-φ42 42 × 5
1600 64 600 80 1460 1830 1760 40-φ36 1915 1820 40-φ48 62 × 5
1800 72 670 1090 1560 2045 1970 44-φ39 2115 2020 44-φ48
2000 80 760 1190 1670 2265 2 1 80 48-φ42 2325 2230 48-φ48


D343H-16C, D343Y-16C, D341H-16C Worm Flanged Hard Sealing Butterfly Valve Connection Size:

2.5Mpa pressure models are: D343H-25C, D343Y-25C, D341H-25C; 4.0Mpa pressure models are: D343H-40C, D343Y-40C, D341H-40C

The way to Main dimensions 1.6M Pa 2.5MPa 4.0MPa
mm inc h L H H 1 D D 1 Z-φd b × f D D 1 Z-φd b × f D D1 Z-φd b × f
50 2 108 75 200 165 125 4-φ18 20 × 3 165 125 4-φ18 20 × 3 165 125 4-φ18 20 × 3
65 2-1 / 2 112 93 210 185 145 4-φ18 20 × 3 185 145 8-φ18 22 × 3 185 145 8-φ18 22 × 3
80 3 114 98 226 200 160 8-φ18 20 × 3 200 160 8-φ18 4 × 3 200 160 8-φ18 24 × 3
100 4 127 130 250 220 180 8-φ18 22 × 3 235 190 8-φ22 24 × 3 235 190 8-φ22 24 × 3
125 5 140 165 295 250 210 8-φ18 22 × 3 270 220 8-φ26 26 × 3 270 220 8-φ26 26 × 3
150 6 140 175 315 285 240 8-φ22 24 × 3 300 250 8-φ26 28 × 3 300 250 8-φ26 28 × 3
200 8 152 220 380 340 295 12-φ22 24 × 3 360 310 12-φ26 30 × 3 375 320 12-φ30 34 × 3
250 10 165 250 405 405 355 12-φ26 26 × 3 425 370 12-φ30 32 × 3 450 385 12-φ33 38 × 3
300 12 178 300 480 460 410 12-φ26 28 × 3 485 430 16-φ30 34 × 4 515 450 12-φ33 42 × 4
350 14 190 330 545 520 470 16-φ26 30 × 4 555 490 16-φ33 38 × 4 580 510 16-φ36 46 × 4
400 16 216 360 550 580 525 16-φ30 32 × 4 620 550 16-φ36 40 × 4 660 585 16-φ39 50 × 4
450 18 222 380 620 640 585 20-φ30 34 × 4 670 600, 20-φ36 42 × 4 685 610 20-φ39 50 × 4
500 20 229 410 680 715 650 20-φ33 36 × 4 730 660 20-φ36 44 × 4 755 670 20-φ42 52 × 4
600 24 267 460 750 840 770 20-φ36 38 × 5 845 770 20-φ39 46 × 5 890 795 20-φ48 60 × 5
700 28 292 530 820 910 840 24-φ36 38 × 5 960 875 24-φ42 46 × 5
800 32 318 610 910 1025 950 24-φ39 38 × 5 1085 990 24-φ48 50 × 5
900 36 330 640 930 1125 1050 28-φ39 40 × 5 1185 1 090 28-φ48 54 × 5
1000 40 410 720 980 1255 1170 28-φ42 42 × 5 1320 1210 28-φ56 58 × 5
1200 48 470 820 1220 1485 1390 32-φ48 48 × 5 1530 1420 32-φ56 72 × 5
1400 56 530 930 1310 1685 1590 36-φ48 60 × 5 1750 1640 36-φ65 78 × 5
1600 64 600 980 1460 1930 1820 40-φ56
1800 72 670 1090 1560 2130 2020 44-φ56
2000 80 760 1190 1670 2345 2230 48-φ62


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