Concentric Wafer Butterfly Valve
Concentric Wafer Butterfly Valve Introduction
Concentric wafer butterfly valve can be rotated to 90 degrees to open or close valve, having the advantages of compact construction, reliable seal, and long service life. This Concentric Wafer Butterfly Valve is widely used for water supply and drainage system to regulate or cut-off medium, in the chemical industry, food, and other industries.
Characteristic of Concentric Wafer Butterfly Valve
1. Utilizing dual eccentric structure and having a reliable seal.
2. Adopting stainless steel and oil resistant nitrile rubber, having a long service life.
3. Seal ring can be used on the valve body and disc, which is applicable to the different medium as required.
4. Frame structure disc, having the advantages of high strength, large flow area, and low flow resistance.
5. The whole valve uses baking finish which can resist corrosion effectively. Otherwise, changing seal materials, the valve can be applied to the different medium.
6. The vale has dual eccentric structure. It can be installed in any position without the limitation of medium flow and space.
7. The unique structure, convenient utilization.
Concentric wafer butterfly valve Parameter
Nominal diameter(mm) | 50~2000 | 50~1600 | |
Nominal Pressure PN(MPa) | 0.6 | 1.0 | 1.6 |
Seal test(MPa) | 0.66 | 1.1 | 1.76 |
Shell test(MPa) | 0.9 | 1.5 | 2.4 |
Applicable temperature | Nitrile rubber: -40℃~90℃, fluoro-rubber: -20℃~200℃ | ||
Applicable medium | Water, air, gas, oil and other weak corrosive fluid | ||
Leakage rate | GB/T13927-92 | ||
Actuation mode | Worm gear, electric, pneumatic, electrohydraulic |
Concentric Wafer Butterfly Valve Materials
Components | Materials |
Valve body | WCB、QT450-10、HT200、HT250 |
Disc | WCB、QT450-10、HT200、HT250 |
Valve shaft | 2Cr13 |
Seal ring | Oil resistant nitrile rubber |
packing | Flexible graphite |
Concentric Wafer Butterfly Valve Standards
Manufacturing standard | GB/T 122387-89 |
Flange standard | GB9113-2000、GB17241.6-1998 |
Face to face standard | GB12221-89 |
Inspection standard | GB/T 13927-92 |
Concentric Wafer Butterfly Valve Main Dimensions
Unit: mm
DN | L | H | HO | A | B | 0.6MPa | 1.0MPa | 1.6MPa | |||
DO | n-d | DO | n-d | DO | n-d | ||||||
50 | 43 | 63 | 306 | 180 | 200 | 110 | 4-14 | 125 | 4-18 | 125 | 4-18 |
65 | 46 | 70 | 321 | 180 | 200 | 130 | 4-14 | 145 | 4-18 | 145 | 4-18 |
80 | 46 | 83 | 346 | 180 | 200 | 150 | 4-18 | 160 | 8-18 | 160 | 8-18 |
100 | 52 | 105 | 387 | 180 | 200 | 170 | 4-18 | 180 | 8-18 | 180 | 8-18 |
125 | 56 | 115 | 411 | 180 | 200 | 200 | 8-18 | 210 | 8-18 | 210 | 8-18 |
150 | 56 | 137 | 447 | 270 | 280 | 225 | 8-18 | 240 | 8-22 | 240 | 8-22 |
200 | 60 | 164 | 572 | 270 | 280 | 280 | 8-18 | 295 | 8-22 | 295 | 8-22 |
250 | 68 | 206 | 646 | 270 | 280 | 335 | 12-18 | 350 | 12-22 | 355 | 12-26 |
300 | 78 | 230 | 738 | 380 | 420 | 395 | 12-22 | 400 | 12-22 | 410 | 12-26 |
350 | 78 | 248 | 761 | 380 | 420 | 445 | 12-22 | 460 | 16-22 | 470 | 16-26 |
400 | 102 | 289 | 877 | 450 | 470 | 495 | 16-22 | 515 | 16-26 | 525 | 16-30 |
450 | 114 | 320 | 938 | 480 | 490 | 550 | 16-22 | 565 | 20-26 | 585 | 20-30 |
500 | 127 | 343 | 993 | 480 | 490 | 600 | 20-22 | 620 | 20-26 | 650 | 20-33 |
600 | 154 | 413 | 1131 | 480 | 490 | 705 | 20-26 | 725 | 20-30 | 770 | 20-36 |
700 | 165 | 478 | 1476 | 640 | 660 | 810 | 24-26 | 840 | 24-30 | 840 | 24-36 |
800 | 190 | 525 | 1533 | 640 | 660 | 920 | 24-30 | 950 | 24-33 | 950 | 24-39 |
900 | 203 | 585 | 1655 | 750 | 860 | 1020 | 24-30 | 1050 | 28-33 | 1050 | 38-39 |
1000 | 216 | 640 | 1765 | 850 | 900 | 1120 | 28-30 | 1160 | 28-36 | 1170 | 28-42 |
1200 | 254 | 755 | 1995 | 850 | 900 | 1340 | 32-33 | 1380 | 32-39 | 1390 | 32-48 |
Please note that the above specifications are “general specifications” that pertain to the majority of our products. These specifications should only be used for general, informational purposes. The measurement/size of the goods delivered may be different from the data in the above table, please check with us when order placed.
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