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D943H electric hard sealing butterfly valve
Model: D943H- 10/16/25
Caliber: DN50-2000
Pressure: 1.0MPa-2.5MPa
Material:   Cast iron, cast steel, carbon steel, stainless steel, 304 , 316

Electric hard seal butterfly valve
D943H-10/16/25 electric hard sealing butterfly valve This valve adopts three eccentric sealing structure, the valve seat and the butterfly plate have almost no wear, and the sealing function is more and more tight. The sealing ring is made of stainless steel and has the double advantages of metal hard seal and elastic seal. It has excellent sealing performance under low temperature and high temperature , and has corrosion resistance and long service life. The disc sealing surface is made of surfacing cobalt-based hard alloy, the sealing surface is wear-resistant and has a long service life. The large-size butterfly plate adopts a truss structure with high strength, large flow area and small flow resistance. The valve has a two-way sealing function, is not limited by the flow direction of the medium during installation, and is not affected by the position of the space, and can be installed in any direction. The drive unit can be installed in multiple stations (rotated 90° or 180° ) for user convenience. Precision J -shaped elastic sealing ring and triple eccentric multi-layer metal hard sealing structure, widely used in the metallurgical temperature ≤ 425 °C   , power, petrochemical, and industrial pipelines such as water supply and drainage and municipal construction, used to regulate flow and load fluid. The valve adopts three eccentric structure, the valve seat and the disc sealing surface are made of different hardness and stainless steel, have good corrosion resistance and long service life. The valve has two-way sealing function, and the product meets the national GB/T13927-92 valve pressure. Test Standard.
The main technical parameters
Nominal DN ( mm) 50 ~ 2000
Nominal pharmacology PN ( MPa) 0.6 1.0 1.6 2.5
Sealing test (MPa) 0.66 1.1 1.76 2.75
Strength test (MPa) 0.9 1.5 2.4 3.75
proper temperature   Carbon steel: -29 °C ~ 425 °C   Stainless steel: -40 °C to 650 °C
Applicable medium   Water, air, natural gas, oil and weakly corrosive fluids
Leak rate   Meet the GB/T13927-92 standard
Drive mode   Worm gear drive, electric, pneumatic, hydraulic


Main component materials
Part Name   material
Valve body WCB , alloy steel, stainless steel, QT450-10
Butterfly WCB , alloy steel, stainless steel, QT450-10
Valve shaft 2Cr13 stainless steel, alloy steel
Seal ring   Stainless steel ring
filler   Flexible graphite


Adopt standard
Manufacturing standard JB/T 8527-97
Flange standard GB9113-2000
Structure length standard GB12221-89
Inspection standard GB/T 13927-92


D943H-10/16/25 electric hard sealing butterfly valve main shape connection size
Nominal size (DN) main size   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
50 108 530 112 165 125 4-18 165 125 4-18 165 125 4-18
65 112 530 115 185 145 4-18 185 145 4-18 185 145 8-18
80 114 565 120 200 160 4-18 200 160 8-18 200 160 8-18
100 127 600 138 220 180 8-18 220 180 8-18 235 190 8-22
125 140 640 164 250 210 8-18 250 210 8-18 270 220 8-26
150 140 705 175 285 240 8-22 285 240 8-22 300 250 8-26
200 152 775 200 340 295 8-22 340 295 12-22 360 310 12-26
250 165 945 243 395 350 12-22 405 355 12-26 425 370 12-30
300 178 1070 250 445 400 12-22 460 410 12-26 485 430 16-30
350 190 1140 280 505 460 16-22 520 470 12-26 555 490 16-33
400 216 1210 305 565 515 16-26 580 525 16-26 620 550 16-36
450 222 1335 350 615 565 20-26 640 585 16-30 670 600 20-36
500 229 1415 380 670 620 20-26 715 650 20-30 730 660 20-36
600 267 1605 445 780 725 20-30 840 770 20-33 845 770 20-39
700 292 1844 480 895 840 24-30 910 840 24-36 960 875 24-42
800 318 2040 530 1015 950 24-33 1025 950 24-39 1085 990 24-48
900 330 2255 580 1115 1050 28-33 1125 1050 28-39 1185 1090 28-48
1000 410 2380 650 1230 1160 28-36 1255 1170 28-42 1320 1210 28-56
1200 470 2640 760 1455 1380 32-39 1485 1390 32-48 1530 1420 32-56
1400 530 2886 850 1675 1590 36-42 1685 1590 36-48 1755 1640 36-62
1600 600 3156 1030 1915 1820 40-48 1930 1820 40-56 1975 1860 40-62
1800 670 3421 1230 2115 2020 44-48 2130 2020 44-56 2195 2070 44-70
2000 760 3685 1350 2325 2230 48-48 2345 2230 48-62 2425 2300 48-70

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