Concentric Wafer Butterfly Valve
Concentric Wafer Butterfly Valve
Concentric Wafer Butterfly Valve
China Butterfly Valve manufacturer Xinhai offers Concentric Wafer Butterfly Valves in WCB, QT450-10, HT200, HT250, DN50-DN1200, 0.6MPa/1.0MPa/1.6MPa.
Concentric wafer butterfly valve, manufactured by Xinhai, can be rotated to 90 degree to open or close valve, having the advantages of compact construction, reliable seal and long service life. The valve is widely used for water supply and drainage system to regulate or cut-off medium, in chemical industry, food and other industries.
Characteristic of Concentric Wafer Butterfly Valve：
1. Utilizing dual eccentric structure and having reliable seal.
2. Adopting stainless steel and oil resistent nitrile rubber, having long service life.
3. Seal ring can be used on the valve body and disc, which is applicable for 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 applicable for 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. Unique structure, convenient utilization.
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℃, fluororubber: -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 | ||
Materials：
| Components | Materials |
| Valve body | WCB、QT450-10、HT200、HT250 |
| Disc | WCB、QT450-10、HT200、HT250 |
| Valve shaft | 2Cr13 |
| Seal ring | Oil resistent nitrile rubber |
| packing | Flexible graphite |
Implementation 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 |
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 |
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