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Electric flange butterfly valve

详情介绍

product description

Product overview

It adopts precise j-shaped elastic sealing ring and three-eccentric multi-layer metal hard sealing structure, which is widely used for regulating the flow rate and carrying the cut-off body in the industrial pipelines with medium temperature ≤425℃, such as gold treatment, electric power, petrochemical industry, water supply and drainage, municipal construction and so on. The valve adopts three eccentric structure, the valve seat and disc sealing surface are made of different hardness and stainless steel, with good corrosion resistance, long service life, the valve has two-way sealing function, the product conforms to the national GB/ t13927-92 valve pressure test standard.

The characteristics of

1. The valve adopts three eccentric sealing structure, the valve seat and disc almost no wear, with the sealing function of more and more tight.

2. The sealing ring is made of stainless steel, which has the dual advantages of metal hard seal and elastic seal. No matter in the case of low temperature and high temperature, it has excellent sealing performance, corrosion resistance, long service life and other characteristics.

3. The sealing surface of disc is surfacing welded with cobalt-based cemented carbide, which is wear-resistant and has a long service life.

4. Large size butterfly board adopts quilted structure, with high strength, large flow area and small flow resistance.

5. The valve has a two-way sealing function, installation is not limited by the flow of media, also not affected by the space position, can be installed in any direction.

6. The driving device can be installed at multiple stations (rotating 90° or 180°), which is easy for users to use.

Main technical parameters



DN(mm)50~2000
Nominal pharmacologicalPN(MPa)0.61.01.62.5
seal test(MPa)0.661.11.762.75
strength test(MPa)0.91.52.43.75
applicable temperatureCarbon steel: -29℃ ~ 425℃ stainless steel: -40℃ ~ 650℃
applicable mediumWater, air, natural gas, oil and weak corrosive fluids
leakage rateComply with GB/ t13927-92 standard
drive modeWorm gear drive, electric, pneumatic, hydraulic


Material of main parts

name of partsMaterials
valve bodyWCB, alloy steel, stainless steel, qt450-10
Butterfly PlateWCB, alloy steel, stainless steel, qt450-10
valve shaft2Cr13 stainless steel, alloy steel
seal ringmechanical ring
paddingflexible graphite

executive standard

manufacturer's standardFlange standardStructural length standard
JB/T 8527-97
GB9113-2000
GB12221-89
inspection standardGB/T 13927-92

Product size parameters d943h-10/16/25 / electric hard-seal butterfly valve (unit :mm)

(DN)main dimensionFlange dimensions and bolt specifications
1.0MPa1.6MPa2.5MPa
LH1HDD1n-ФdDD1n-ФdDD1n-Фd
501085301121651254-181651254-181651254-18
651125301151851454-181851454-181851458-18
801145651202001604-182001608-182001608-18
1001276001382201808-182201808-182351908-22
1251406401642502108-182502108-182702208-26
1501407051752852408-222852408-223002508-26
2001527752003402958-2234029512-2236031012-26
25016594524339535012-2240535512-2642537012-30
300178107025044540012-2246041012-2648543016-30
350190114028050546016-2252047012-2655549016-33
400216121030556551516-2658052516-2662055016-36
450222133535061556520-2664058516-3067060020-36
500229141538067062020-2671565020-3073066020-36
600267160544578072520-3084077020-3384577020-39
700292184448089584024-3091084024-3696087524-42
8003182040530101595024-33102595024-39108599024-48
90033022555801115105028-331125105028-391185109028-48
100041023806501230116028-361255117028-421320121028-56
120047026407601455138032-391485139032-481530142032-56
140053028868501675159036-421685159036-481755164036-62
1600600315610301915182040-481930182040-561975186040-62
1800670342112302115202044-482130202044-562195207044-70
2000760368513502325223048-482345223048-622425230048-70