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CN | EN

Three eccentric metal hard seal butterfly valve(Worm Gear)

Technical Parameters

Fluid medium: Water, oil, gas and various corrosive media
Temperature Range: -2℃～450℃
Pressure Ratings: PN0.6～6.4MPa
Size Range: DN100～DN3600
Connection Type: Flanged;Double folder;Welding
Connection standard: GB·ANSI·API
Body Materials: Carbon steel;Stainless stee;Aluminum bronze
Valve seat material: Stelli Alloy;Tungsten carbide;Nickel alloy;Monel;Stainless steel
Valve plate material: Stellite;Stainless steel;Alloy steel
Note: All parts can be made of different materials according to actual working conditions.

Product Details

Product Features

1.The main seal is a three-dimensional multi-level metal seal, stainless steel and stainless steel, open or closed valve sealing surface friction between the sealing surface of short stroke, long service life, close the valve is closed tightly, reliable sealing performance. The elastic properties of the composite metal seal ring make the valve leak free.
2.The use of three eccentric structure design, reduce the friction between the sealing surface, the valve in the actual operation of the process has a role in the compensation of the three, making the valve performance is higher, longer life.
3.The structure of the truss is adopted, and the streamline design of the valve plate is realized, and the casting quality of the valve plate surface is improved, and the flow resistance is reduced. The stainless steel ring mounted on the body, as the cone structure, conducive to fluid circulation, but also improve the casting quality of the inner cavity of the valve body, reduce the flow resistance.


蝸輪法蘭式硬密封蝶閥(圖1)


Main overall connection dimensions

Nominal Diameter
（DN） 		Dimensions Flange size and bolt specifications
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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