D343H Worm Gear Drive Hard Seal Butterfly Valve |
Product number:D343H |
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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.
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The main technical parameters
Nominal through DN (mm)
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50 ~ 2000
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Nominal pharmacology PN (MPa)
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0.6
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1.0
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1.6
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2.5
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Seal test (MPa)
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0.66
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1.1
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1.76
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2.75
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Strength test (MPa)
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0.9
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1.5
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2.4
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3.75
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proper temperature
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Carbon steel: -29℃~425℃ Stainless steel: -40℃~650℃
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Applicable medium
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Water, air, natural gas, oil and weakly corrosive fluids
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Leak rate
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Comply with GB/T13927-92 standard
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Driving method |
Worm gear drive, electric, pneumatic, hydraulic
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Material of main parts
Part Name
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Ingredients
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Valve body
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WCB, alloy steel, stainless steel, QT450-10
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Butterfly board
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WCB, alloy steel, stainless steel, QT450-10
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Valve shaft
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2Cr13 stainless steel, alloy steel
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Sealing ring
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Stainless steel ring
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filler
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Flexible graphite
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Adopt the standard
Manufacturing Standards
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JB/T 8527-97
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Flange standard
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GB9113-2000
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Structure length standard
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GB12221-89
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Inspection standards
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GB / T 13927-92
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D343H-10/16/25/worm gear drive hard seal butterfly valve main outline and connection dimensions (Unit: mm)
Nominal pass (DN)
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Main dimensions
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Flange size and bolt specifications
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1.0MPa
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1.6MPa
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2.5MPa
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L
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H1
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H
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D
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D1
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n-Фd
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D
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D1
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n-Фd
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D
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D1
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n-Фd
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50
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108
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350
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112
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165
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125
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4-18
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165
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125
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4-18
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165
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125
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4-18
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65
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112
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370
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115
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185
|
145
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4-18
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185
|
145
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4-18
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185
|
145
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8-18
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80
|
114
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380
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120
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200
|
160
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4-18
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200
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160
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8-18
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200
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160
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8-18
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100
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127
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420
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138
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220
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180
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8-18
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220
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180
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8-18
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235
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190
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8-22
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125
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140
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460
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164
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250
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210
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8-18
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250
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210
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8-22
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270
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220
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8-26
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150
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140
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555
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175
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285
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240
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8-22
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285
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240
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8-22
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300
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250
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8-26
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200
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152
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760
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200
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340
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295
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8-22
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340
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295
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12-22
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360
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310
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12-26
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250
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165
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830
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243
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395
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350
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12-22
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405
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355
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12-26
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425
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370
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12-30
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300
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178
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895
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250
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445
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400
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12-22
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460
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410
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12-26
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485
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430
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16-30
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350
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190
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950
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280
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505
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460
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16-22
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520
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470
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16-26
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555
|
490
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16-33
|
400
|
216
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1190
|
305
|
565
|
515
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16-26
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580
|
525
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16-30
|
620
|
550
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16-36
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450
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222
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1255
|
350
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615
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565
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20-26
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640
|
585
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20-30
|
670
|
600
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20-36
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500
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229
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1305
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380
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670
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620
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20-26
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715
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650
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20-33
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730
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660
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20-36
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600
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267
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1340
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445
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780
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725
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20-30
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840
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770
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20-36
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845
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770
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20-39
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700
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292
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1520
|
480
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895
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840
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24-30
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910
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840
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24-36
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960
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875
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24-42
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800
|
318
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1710
|
530
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1015
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950
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24-33
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1025
|
950
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24-39
|
1085
|
990
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24-48
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900
|
330
|
1810
|
580
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1115
|
1050
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28-33
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1125
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1050
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28-39
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1185
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1090
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28-48
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1000
|
410
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1960
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650
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1230
|
1160
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28-36
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1255
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1170
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28-42
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1320
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1210
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28-56
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1200
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470
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2250
|
760
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1455
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1380
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32-39
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1485
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1390
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32-48
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1530
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1420
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32-56
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1400
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530
|
2435
|
850
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1675
|
1590
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36-42
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1685
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1590
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36-48
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1755
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1640
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36-62
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1600
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600
|
2780
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1030
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1915
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1820
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40-48
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1930
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1820
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40-56
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1975
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1860
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40-62
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1800
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670
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3020
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1230
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2115
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2020
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44-48
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2130
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2020
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44-56
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2195
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2070
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44-70
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2000
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760
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3270
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1350
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2325
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2230
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48-48
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2345
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2230
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48-62
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2425
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2300
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48-70
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