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Wafer Type Hard Seal Butterfly Valve

The Wafer Type Hard Seal Butterfly Valve adopts precise J-shaped elastic seal ring and three eccentric multi-level metal hard seal structure. 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 flow regulation and current carrying and breaking body

Description

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


Allto (4)

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