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Flange type multi-level metal hard sealing butterfly valve

Flanged multi-level hard sealing butterfly valve

This valve adopts precise J-shaped elastic sealing ring and triple eccentric multi-layer metal hard sealing structure, which is widely used in metallurgy, electric power, petrochemical industry, water supply and drainage and municipal construction and other industrial pipelines with medium temperature ≤425 ℃ . Adjust the flow rate and use of carrier and cutoff fluids.

The valve adopts triple eccentric structure. The valve seat and disc sealing surface are made of different hardness and stainless steel, which has good corrosion resistance and long service life. The product conforms to the national GB/T13927-92 valve pressure test standard.

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Features of flanged multi-level metal hard sealing butterfly valve:

  1. The valve adopts a triple eccentric sealing structure, and the valve seat and disc are almost free of wear and have a tighter sealing function.
  2. The sealing ring is made of stainless steel, which has the dual advantages of metal hard sealing and elastic sealing. It has excellent sealing performance, corrosion resistance and long service life no matter in the case of low temperature and high temperature.
  3. The sealing surface of the disc plate is made of surfacing cobalt-based hard alloy , the sealing surface is wear-resistant and has a long service life.
  4. The large-sized butterfly plate adopts a quilted frame structure, with high strength, large flow area and small flow resistance.
  5. The valve has a two-way sealing function. It is not restricted by the flow direction of the medium during installation, nor is it affected by the spatial position, and can be installed in any direction.
  6. The drive device can be installed in multiple positions (rotating 90° or 180°), which is convenient for users to use.

Flange type multi-level metal hard sealing butterfly valve connection size:

Nominal diameter (DN) Main dimensions Flange size and bolt size
1.0MPa 1.6MPa 2.5MPa
L H1 H D D1 n- Фd D D1 n- Фd D D1 n- Фd
50 108 350 112 165 125 4-18 165 125 4-18 165 125 4-18
65 112 370 115 185 145 4-18 185 145 4-18 185 145 8-18
80 114 380 120 200 160 4-18 200 160 8-18 200 160 8-18
100 127 420 138 220 180 8-18 220 180 8-18 235 190 8-22
125 140 460 164 250 210 8-18 250 210 8-22 270 220 8-26
150 140 555 175 285 240 8-22 285 240 8-22 300 250 8-26
200 152 760 200 340 295 8-22 340 295 12-22 360 310 12-26
250 165 830 243 395 350 12-22 405 355 12-26 425 370 12-30
300 178 895 250 445 400 12-22 460 410 12-26 485 430 16-30
350 190 950 280 505 460 16-22 520 470 16-26 555 490 16-33
400 216 1190 305 565 515 16-26 580 525 16-30 620 550 16-36
450 222 1255 350 615 565 20-26 640 585 20-30 670 600 20-36
500 229 1305 380 670 620 20-26 715 650 20-33 730 660 20-36
600 267 1340 445 780 725 20-30 840 770 20-36 845 770 20-39
700 292 1520 480 895 840 24-30 910 840 24-36 960 875 24-42
800 318 1710 530 1015 950 24-33 1025 950 24-39 1085 990 24-48
900 330 1810 580 1115 1050 28-33 1125 1050 28-39 1185 1090 28-48
1000 410 1960 650 1230 1160 28-36 1255 1170 28-42 1320 1210 28-56
1200 470 2250 760 1455 1380 32-39 1485 1390 32-48 1530 1420 32-56
1400 530 2435 850 1675 1590 36-42 1685 1590 36-48 1755 1640 36-62
1600 600 2780 1030 1915 1820 40-48 1930 1820 40-56 1975 1860 40-62
1800 670 3020 1230 2115 2020 44-48 2130 2020 44-56 2195 2070 44-70
2000 760 3270 1350 2325 2230 48-48 2345 2230 48-62 2425 2300 48-70

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