Replacing the traditional wedge disc with the parallel floating round disc sealing assembly, the parallel double disc gate valve exhibits its great superiority and greatly improves its sealing performance and prolongs its service life. Featured by fast opening and closing, labor saving, low vibration, safe operation and simple maintenance, it is very suitable for shut-off or discharging in transportation pipes of gas and liquid media, and shows its excellence especially in shut-off and remote automatic control in transportation pipes of gas and liquid media. With no leakage, it can meet the requirements of high temperature, high pressure, explosion-proof and anticorrosive service conditions. It is widely applied in such industries as petroleum, chemical industry, oil refining, light industry, metallurgy, electric power, etc. With successful application and excellent service over the years, it has won trust and comment from users.
1. Nominal pressure (MPa): 1.6, 2.0, 2.5, 4.0, 5.0, 6.3, 10.0, 11.0
2. Applicable temperature: low temperature type (-46~+345ºC), normal temperature type (-29~+250ºC), medium temperature type (-29~+425ºC), high temperature type (+425~+600ºC)
3. Applicable media: water, steam, gas, oil
4. Bonnet type: standard type (-20~+300ºC), high temperature (cooling fin) type (+300~+600ºC) low temperature (extension) type (-60~-20ºC)
5. Valve shut-off class: hard seal V class, soft seal VI class (Hard seal VI class is for special order.) conforming to GB/T4213 and ASME B16.104
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Standard |
Design and manufacture |
Length of the structure |
Flange size |
Pressure temperature rating |
Inspection and testing |
Leakage level |
National Standards With industry standards |
GB/T 12234 GB/T 19672Â Â Â Â Â Â Â Â |
GB/T12221 | JB/T 79 GB/T 9113 HG/T 20592~20635 SH 3406 |
GB/T 9124 GB/T 12224 |
JB/T 9092 GB/T 13927 |
GB/T4213 |
American Standard |
API 6D API 600 |
ASME B16.10 API 6D |
ASME B16.5 ASME B16.47 |
ASME B16.34 | API 598 API 6D |
ANSI/FCI 70-2 ASME B16.104 |
Nominal Pressure |
Nominal diameter |
Face-to-face dimensions |
Flange connection dimensions |
RFÂ Â Â Â Â Â Sealing surface |
Opening height |
(kg) Reference weight |
|||||
NPS | DN | L | D | K | n-L | C | d | f1 | H | ||
Class 150 |
11/2 | 40 | 165 | 125 | 98.4 | 4-16 | 15.9 | 73.0 | 2 | 630 | 42 |
2 | 50 | 178 | 150 | 120.7 | 4-18 | 17.5 | 92.1 | 2 | 640 | 45 | |
21/2 | 65 | 190 | 180 | 139.7 | 4-18 | 20.7 | 104.8 | 2 | 690 | 55 | |
3 | 80 | 203 | 190 | 152.4 | 4-18 | 22.3 | 127.0 | 2 | 750 | 68 | |
4 | 100 | 229 | 230 | 190.5 | 8-18 | 22.3 | 157.2 | 2 | 780 | 80 | |
5 | 125 | 254 | 255 | 215.9 | 8-22 | 22.3 | 185.7 | 2 | 850 | 110 | |
6 | 150 | 267 | 280 | 241.3 | 8-22 | 23.9 | 215.9 | 2 | 940 | 130 | |
8 | 200 | 292 | 345 | 298.5 | 8-22 | 27.0 | 269.9 | 2 | 1120 | 220 | |
10 | 250 | 330 | 405 | 362.0 | 12-26 | 28.6 | 323.8 | 2 | 1330 | 270 | |
12 | 300 | 356 | 485 | 431.8 | 12-26 | 30.2 | 381.0 | 2 | 1530 | 370 | |
14 | 350 | 381 | 535 | 476.3 | 12-30 | 33.4 | 412.8 | 2 | 1710 | 510 | |
16 | 400 | 406 | 595 | 539.8 | 16-30 | 35.0 | 469.9 | 2 | 1880 | 650 | |
18 | 450 | 432 | 635 | 577.9 | 16-33 | 38.1 | 533.4 | 2 | 2160 | 1150 | |
20 | 500 | 457 | 700 | 635.0 | 20-33 | 41.3 | 584.2 | 2 | 2360 | 1380 | |
24 | 600 | 508 | 815 | 749.3 | 20-36 | 46.1 | 692.2 | 2 | 2660 | 1520 | |
28 | 700 | 610 | 835 | 795.3 | 40-22 | 43.0 | 762 | 2 | 3350 | 2390 | |
32 | 800 | 660 | 940 | 900.1 | 48-22 | 44.6 | 864 | 2 | 3860 | 2890 | |
36 | 900 | 711 | 1055 | 1009.6 | 44-26 | 50.9 | 972 | 2 | 4280 | 3620 |
Nominal Pressure |
Nominal diameter |
Face-to-face dimensions |
Flange connection dimensions |
RFÂ Â Â Â Â Â Sealing surface |
Opening height |
(kg) Reference weight |
|||||
NPS | DN | L | D | K | n-L | C | d | f1 | H | ||
Class 300 |
11/2 | 40 | 190 | 155 | 114.3 | 4-22 | 19.1 | 73.0 | 2 | 640 | 45 |
2 | 50 | 216 | 165 | 127.0 | 8-18 | 20.7 | 92.1 | 2 | 650 | 50 | |
21/2 | 65 | 241 | 190 | 149.2 | 8-22 | 23.9 | 104.8 | 2 | 690 | 70 | |
3 | 80 | 283 | 210 | 168.3 | 8-22 | 27.0 | 127.0 | 2 | 750 | 80 | |
4 | 100 | 305 | 255 | 200.0 | 8-22 | 30.2 | 157.2 | 2 | 800 | 100 | |
5 | 125 | 381 | 280 | 235.0 | 8-22 | 33.4 | 185.7 | 2 | 910 | 180 | |
6 | 150 | 403 | 320 | 269.9 | 12-22 | 35.0 | 215.9 | 2 | 1000 | 210 | |
8 | 200 | 419 | 380 | 330.2 | 12-26 | 39.7 | 269.9 | 2 | 1160 | 250 | |
10 | 250 | 457 | 445 | 387.4 | 16-30 | 46.1 | 323.8 | 2 | 1350 | 420 | |
12 | 300 | 502 | 520 | 450.8 | 16-33 | 49.3 | 381.0 | 2 | 1620 | 590 | |
14 | 350 | 762 | 585 | 514.4 | 20-33 | 52.4 | 412.8 | 2 | 1820 | 870 | |
16 | 400 | 838 | 650 | 571.5 | 20-36 | 55.6 | 469.9 | 2 | 1930 | 1180 | |
18 | 450 | 914 | 710 | 628.6 | 24-36 | 58.8 | 533.4 | 2 | 2150 | 1380 | |
20 | 500 | 991 | 775 | 685.8 | 24-36 | 62.0 | 584.2 | 2 | 2350 | 1980 | |
24 | 600 | 1143 | 915 | 812.8 | 24-42 | 68.3 | 692.2 | 2 | 3060 | 2380 | |
28 | 700 | 1346 | 920 | 857.2 | 36-36 | 87.4 | 787 | 2 | 3400 | 3300 | |
32 | 800 | 1524 | 1055 | 977.9 | 32-42 | 101.6 | 902 | 2 | 4400 | 6400 | |
36 | 900 | 1727 | 1170 | 1089 | 32-45 | 101.6 | 1010 | 2 | -- | -- |
Nominal Pressure |
Nominal diameter |
Face-to-face dimensions  |
Flange connection dimensions |
RFÂ Â Â Â Â Â Sealing surface |
Opening height |
(kg) Reference weight |
||||||||
NPS | DN | L | D | K | n-L | C | RF | RJ | H | |||||
RF | RJ | d | f1 | P | E | |||||||||
Class 600 |
11/2 | 40 | 241 | 241 | 155 | 114.3 | 4-22 | 22.3 | 73.0 | 7 | 90.5 | 6.35 | 650 | 60 |
2 | 50 | 292 | 295 | 165 | 127.0 | 8-18 | 25.4 | 92.1 | 7 | 108 | 7.92 | 650 | 70 | |
21/2 | 65 | 330 | 333 | 190 | 149.2 | 8-22 | 28.6 | 104.8 | 7 | 127 | 7.92 | 710 | 95 | |
3 | 80 | 356 | 359 | 210 | 168.3 | 8-22 | 31.8 | 127.0 | 7 | 146 | 7.92 | 765 | 110 | |
4 | 100 | 432 | 435 | 275 | 215.9 | 8-26 | 38.1 | 157.2 | 7 | 175 | 7.92 | 820 | 180 | |
5 | 125 | 508 | 511 | 330 | 266.7 | 8-30 | 44.5 | 185.7 | 7 | 210 | 7.92 | 960 | 270 | |
6 | 150 | 559 | 562 | 355 | 292.1 | 12-30 | 47.7 | 215.9 | 7 | 241 | 7.92 | 1050 | 330 | |
8 | 200 | 660 | 664 | 420 | 349.2 | 12-33 | 55.6 | 269.9 | 7 | 302 | 7.92 | 1250 | 620 | |
10 | 250 | 787 | 791 | 510 | 431.8 | 16-36 | 63.5 | 323.8 | 7 | 356 | 7.92 | 1450 | 980 | |
12 | 300 | 838 | 841 | 560 | 489.0 | 20-36 | 66.7 | 381.0 | 7 | 413 | 7.92 | 1720 | 1360 | |
14 | 350 | 889 | 892 | 605 | 527.0 | 20-39 | 69.9 | 412.8 | 7 | 457 | 7.92 | 2040 | 1720 | |
16 | 400 | 991 | 994 | 685 | 603.2 | 20-42 | 76.2 | 469.9 | 7 | 508 | 7.92 | 2150 | 2150 | |
18 | 450 | 1092 | 1095 | 745 | 654.0 | 20-45 | 82.6 | 533.4 | 7 | 575 | 7.92 | 2320 | 2980 | |
20 | 500 | 1194 | 1200 | 815 | 723.9 | 24-45 | 88.9 | 584.2 | 7 | 635 | 9.52 | 2650 | 3400 | |
24 | 600 | 1397 | 1407 | 940 | 838.2 | 24-51 | 101.6 | 692.2 | 7 | 749 | 11.13 | 3150 | 4700 |
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Series Steel Structure Industrial Cooling Tower
Tower structure: all steel structure, tower skeleton, cloth water system, climbing ladders, guardrails are Q235-B material, anti-corrosion using hot-dip galvanizing, surround panel for glass Glass steel.
Windpipe: kinetic energy recovery type, air flow organization is reasonable, high efficiency;
Fan: Wing-type adjustable cooling tower dedicated shaft fan, blades are aluminum alloy or glass steel.Motors,
gearboxes: YE2 series outdoor energy-efficient energy-saving motors, protection class IP55, insulation class F-class.
Filler: modified PVC raw material thin belly filler, high temperature, aging, flame retardant, bonding into a block strength.
Water receiver: the use of high-efficiency low-resistance rib arc water receiver, modified PVC material pull squeeze molding, water collection effect is significant, the drift rate is less than 0.01%.The fan system tower is equipped with motors, gearboxes, fan access platforms and passageways, and there are climbing ladders and guardrails outside the tower.
Pool: This tower's pool and foundation, pre-buried steel plate, etc. by the user is responsible for, the water level should be controlled at -0.25-0.3m as well.
Applied to petroleum, chemical, metallurgy, medicine, electricity and other industrial large water circulation system.
Series Steel Structure Industrial Cooling Tower,Industrial Water Cooling Tower,Industrial Cooling Tower,Mechanical Cooling Tower
Wuxi Ark Fluid Science Technology Co., Ltd. , https://www.fangzhouarkfluid.com