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Pneumatic three eccentric hard sealing butterfly valve
Model: D643H
Nominal diameter: DN50 ~ 1200mm
Nominal: PN0.6 ~ 4.0MPa
Temperature: -40 ℃ ~ 425 ℃
Suitable medium: gas, air, steam, water, sea water, oil, etc.
Body Material: Cast steel, stainless steel, alloy steel
Drive forms: manual, worm gear transmission, pneumatic, hydraulic, electrical, Electro-hydraulic linkage
Design criteria: GB / T12238-2008
Length of the structure: GB / T12221-2005
Connection standard: JB / T 79.1- 1994
Pressure test: GB / T13927-2008

Pneumatic three eccentric hard sealing butterfly valve product description

Pneumatic hard sealing butterfly valve The products are widely used in petroleum, chemical, power, metallurgy, food, medicine, textile, paper and other industries can be installed in the temperature ≤ 425 ℃, the medium for gas, air, steam, water, sea water, oil Industrial pipe network for regulating the flow and cut off the media. 
Drive in the form of manual, worm gear, pneumatic, hydraulic, electric, electro-hydraulic linkage and other implementing agencies, enabling long-distance control and automation. Metal seal butterfly valve products, the Department of long life, energy-saving butterfly valve. The structure of the three-dimensional schematic design of the heart, the seat with a hard and soft seal-compatible multi-level structure, exquisite workmanship, advanced technology. The product from the valve body, disc, multi-level valve seat, stem, transmission and other major components. Therefore, it is widely used in metallurgy, electric power, petroleum, chemical, air, gas, combustible gas and plumbing and other corrosive media pipeline.
 

Pneumatic three eccentric hard sealing butterfly valve Features

Because this product butterfly valve is the use of three-dimensional design of the eccentric principle, so that the seal surface space trajectory idealized, the sealing surface between no friction, no interference, combined with the sealing material properly selected, so that the butterfly valve sealing, corrosion resistance , High temperature resistance and wear resistance has been a reliable guarantee. Its main features are as follows:

1, the opening torque is small, flexible and convenient, saving energy. 
2, three-dimensional structure of the heart, the more close the more tight disc, the sealing performance is reliable, to no leakage. 
3, high pressure, corrosion resistance, wear resistance, long life and so on.
 

Pneumatic three eccentric hard sealing butterfly valve main dimensions

Nominal diameter (DN) Main dimensions Flange size and bolt size
1.0MPa 1.6MPa 2.5MPa
L H1 H D D1 n-Фd D D1 n-Фd D D1 n-Фd
50 108 350 112 165 125 4-18 165 125 4-18 165 125 4-18
65 112 370 115 185 145 4-18 185 145 4-18 185 145 8-18
80 114 380 120 200 160 4-18 200 160 8-18 200 160 8-18
100 127 420 138 220 180 8-18 220 180 8-18 235 190 8-22
125 140 460 164 250 210 8-18 250 210 8-18 270 220 8-26
150 140 555 175 285 240 8-22 285 240 8-22 300 250 8-26
200 152 760 200 340 295 8-22 340 295 12-22 360 310 12-26
250 165 830 243 395 350 12-22 405 355 12-26 425 370 12-30
300 178 895 250 445 400 12-22 460 410 12-26 485 430 16-30
350 190 950 280 505 460 16-22 520 470 12-26 555 490 16-33
400 216 1190 305 565 515 16-26 580 525 16-26 620 550 16-36
450 222 1255 350 615 565 20-26 640 585 16-30 670 600 20-36
500 229 1305 380 670 620 20-26 715 650 20-30 730 660 20-36
600 267 1340 445 780 725 20-30 840 770 20-33 845 770 20-39
700 292 1520 480 895 840 24-30 910 840 24-36 960 875 24-42
800 318 1710 530 1015 950 24-33 1025 950 24-39 1085 990 24-48
900 330 1810 580 1115 1050 28-33 1125 1050 28-39 1185 1090 28-48
1000 410 1960 650 1230 1160 28-36 1255 1170 28-42 1320 1210 28-56
1200 470 2250 760 1455 1380 32-39 1485 1390 32-48 1530 1420 32-56


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