Electric Wafer Type Hard Seal Butterfly Valve

Ever-Power Machinery provides customers with high-qualityElectric Wafer Type Hard Seal Butterfly Valve product.Adhering to the tenet of "Quality First, Integrity Service", we will provide users with high-quality products and services with reasonable prices and reliable quality!


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D973H Electric Wafer Type Hard Seal Butterfly Valve
Product number:D973H
product description:

  Based on the introduction of foreign advanced technology, our factory adopts precision J-shaped elastic sealing ring and three-eccentric multi-layer metal hard sealing structure. It is widely used in metallurgy, electric power, petrochemical, and water supply and drainage with a medium temperature of ≤425℃. It is used for regulating flow and carrying and breaking fluid on industrial pipelines such as municipal construction.The valve adopts a triple eccentric structure. The valve seat and the sealing surface of the disc are made of different hardness and stainless steel. It has good corrosion resistance and long service life. This valve has two-way sealing function for military and postal services. The product meets the national GB/T13927-92 valve pressure Test accuracy.

Features:


1. This valve adopts a triple eccentric sealing structure, the valve seat and butterfly plate are almost wear-free, and it has a tighter and tighter sealing function.
2. The sealing ring is made of stainless steel, which has the dual advantages of metal hard seal and elastic seal. It has excellent sealing performance, corrosion resistance and long service life regardless of low temperature and high temperature.
3. The sealing surface of the disc plate adopts surfacing welding cobalt-based cemented carbide, which is wear-resistant and has a long service life.
4. The large-size butterfly plate adopts the quilted frame structure, which has high strength, large flow area and small flow resistance.
5. This valve has a two-way sealing function. It is not restricted by the flow direction of the medium during installation and is not affected by the spatial position. It can be installed in any direction.
6. The drive device can be installed in multiple positions (rotated by 90° or 180°), which is convenient for users to use.


The main technical parameters

Nominal through DN (mm)
50 ~ 2000
Nominal pharmacology PN (MPa)
0.6
1.0
1.6
2.5
Seal 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℃~425℃ Stainless steel: -40℃~650℃
Applicable medium
Water, air, natural gas, oil and weakly corrosive fluids
Leak rate
Comply with GB/T13927-92 standard
Driving method
Worm gear drive, electric, pneumatic, hydraulic

Material of main parts

Part Name
Ingredients
Valve body
WCB, alloy steel, stainless steel, QT450-10
Butterfly board
WCB, alloy steel, stainless steel, QT450-10
Valve shaft
2Cr13 stainless steel, alloy steel
Sealing ring
Stainless steel ring
filler
Flexible graphite

Adopt the standard

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

D973H-10/16/25/Electric wafer type hard seal butterfly valve main outline and connection dimensions                               (Unit: mm)

Nominal pass (DN)

Main dimensions
Flange size and bolt specifications
1.0MPa
1.6MPa
2.5MPa
L
H
H1
D1
4-Ф-M
D1
4-Ф-M
D1
4-Ф-M
50
43
530
112
125
F18
125
F18
125
F18
65
46
530
115
145
F18
145
F18
145
F18
80
49
565
120
160
F18
160
F18
160
F18
100
56
600
138
180
F18
180
F18
190
F23
125
64
640
164
210
F18
210
F18
220
F27
150
70
705
175
240
F23
240
F23
250
F27
200
71
775
208
295
M20
295
M20
310
M24
250
76
945
243
350
M20
355
M24
370
M27
300
83
1070
283
400
M20
410
M24
430
M27
350
92
1140
310
460
M20
470
M24
490
M30
400
102
1210
340
515
M24
525
M27
550
M33
450
114
1335
380
565
M24
585
M27
600
M33
500
127
1415
410
620
M24
650
M30
660
M33
600
154
1605
470
725
M27
770
M33
770
M36
700
165
1844
550
840
M27
840
M33
875
M39
800
190
2040
640
950
M30
950
M36
990
M45
900
203
2255
710
1050
M30
1050
M36
1090
M45
1000
216
2380
770
1160
M33
1170
M39
1210
M52
1200
254
2640
890
1380
M36
1390
M45
1420
M52

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Address: Desheng Road, Yongjia County, Zhejiang Province