On the basis of introducing foreign advanced technology, our factory adopts precise J-shaped elastic sealing ring and three eccentric multi-level metal hard sealing structure. D373h Wafer Type Hard Seal Butterfly Valve is widely used in gold treatment, electric power, petrochemical industry, water supply and drainage, municipal construction and other industrial pipelines with medium temperature ≤ 425 ℃ for regulating flow and carrying off fluid. The Wafer Type Hard Seal Butterfly Valve adopts three eccentric structure, and the sealing surfaces of valve seat and disc plate are made of stainless steel with different hardness. It has good corrosion resistance and long service life. The Wafer Type Hard Seal Butterfly Valve has the function of military mail two-way sealing, and the product meets the national valve pressure test standard GB / T13927-92.
characteristic
1. The Wafer Type Hard Seal Butterfly Valve adopts a three eccentric sealing structure, with almost no wear between the valve seat and the butterfly plate, and has the sealing function of tighter and tighter.
2. The sealing ring is made of stainless steel, which has the dual advantages of metal hard seal and elastic seal. Wafer Type Hard Seal Butterfly Valve has excellent sealing performance, corrosion resistance and long service life under low and high temperature.
3. The sealing surface of disc plate adopts surfacing cobalt based cemented carbide, which is wear resistant and has long service life
4. The large-size butterfly plate adopts quilted frame structure, with high strength, large overflow area and small flow resistance.
5. The wafer butterfly valve has two-way sealing function. Wafer Type Hard Seal Butterfly Valve can be installed in any direction without the restriction of medium flow direction and the influence of spatial position.
6. The driving device can be installed in multiple stations (rotating 90 ° or 180 °), which is convenient for users.
Main technical parameters
DN(mm) | 50~2000 | |||
PN(MPa) | 0.6 | 1.0 | 1.6 | 2.5 |
Seal Test(MPa) | 0.66 | 1.1 | 1.76 | 2.75 |
Strangth test(MPa) | 0.9 | 1.5 | 2.4 | 3.75 |
Temperture | Carbon Steel:-29℃~425℃ Stailness Steel:-40℃~650℃ | |||
Medium | Water, air, natural gas, oil products and weakly corrosive fluids | |||
Leakage rate | GB/T13927-92 | |||
Driving mode | Worm gear drive, electric, pneumatic, hydraulic | |||
主要零部件材料
Part Name | material |
valves body | WCB、Alloy steel, stainless steel、QT450-10 |
butterfly plate | WCB、Alloy steel, stainless steel、QT450-10 |
Valve shaft | 2Cr13stainless steel、Alloy steel, stainless steel |
seal | stainless steel |
filler | Flexible graphite |
采用标准
Manufacture Standard | JB/T 8527-97 |
Flange Standard | GB9113-2000 |
Structure length standard | GB12221-89 |
Inspection standards | GB/T 13927-92 |
D373H-10/16/25/Main connecting dimensions of worm gear driven wafer type hard seal butterfly valve (单位:mm)
DIA(DN) | Size | Flange and Bolits | |||||||
1.0MPa | 1.6MPa | 2.5MPa | |||||||
L | H | H1 | D1 | 4-Ф-M | D1 | 4-Ф-M | D1 | 4-Ф-M | |
50 | 43 | 350 | 112 | 125 | Ф18 | 125 | Ф18 | 125 | Ф18 |
65 | 46 | 370 | 115 | 145 | Ф18 | 145 | Ф18 | 145 | Ф18 |
80 | 49 | 380 | 120 | 160 | Ф18 | 160 | Ф18 | 160 | Ф18 |
100 | 56 | 420 | 138 | 180 | Ф18 | 180 | Ф18 | 190 | Ф23 |
125 | 64 | 460 | 164 | 210 | Ф18 | 210 | Ф18 | 220 | Ф27 |
150 | 70 | 555 | 175 | 240 | Ф23 | 240 | Ф23 | 250 | Ф27 |
200 | 71 | 605 | 208 | 295 | M20 | 295 | M20 | 310 | M24 |
250 | 76 | 680 | 243 | 350 | M20 | 355 | M24 | 370 | M27 |
300 | 83 | 800 | 283 | 400 | M20 | 410 | M24 | 430 | M27 |
350 | 92 | 835 | 310 | 460 | M20 | 470 | M24 | 490 | M30 |
400 | 102 | 915 | 340 | 515 | M24 | 525 | M27 | 550 | M33 |
450 | 114 | 960 | 380 | 565 | M24 | 585 | M27 | 600 | M33 |
500 | 127 | 1020 | 410 | 620 | M24 | 650 | M30 | 660 | M33 |
600 | 154 | 1225 | 470 | 725 | M27 | 770 | M33 | 770 | M36 |
700 | 165 | 1355 | 550 | 840 | M27 | 840 | M33 | 875 | M39 |
800 | 190 | 1470 | 640 | 950 | M30 | 950 | M36 | 990 | M45 |
900 | 203 | 1545 | 710 | 1050 | M30 | 1050 | M36 | 1090 | M45 |
1000 | 216 | 1795 | 770 | 1160 | M33 | 1170 | M39 | 1210 | M52 |
1200 | 254 | 1965 | 890 | 1380 | M36 | 1390 | M45 | 1420 | M52 |

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