Custom Triple eccentric flanged butterfly valve hard seal WCB material Manufacturers, Factory
Product Description
Characteristics
The flanged three eccentric butterfly valve adopts full flanged end connection for solid pipeline assembly. Uniform bolt distribution ensures stable pressure bearing and excellent tightness under high temperature and high pressure. Its triple-offset metal hard seal realizes friction-free operation and bidirectional bubble-tight shutoff with great resistance to abrasion and erosion. Available in WCB, 304 and 316, it is extensively used as main pipeline cut-off valve for heating steam, power plant piping, petrochemical oil, metallurgical hot air and desulfurization flue gas systems.
Advantages
This butterfly type valve is integrated full-flange design ensures uniform stress distribution, high pressure resistance and excellent vibration stability for main pipeline installation.
No contact and no wear during opening and closing. Metal hard seal provides reliable bidirectional zero leakage with self-tightening sealing performance.
The WCB eccentric butterfly valve with excellent resistance to high temperature, high pressure, abrasion and particle erosion, suitable for harsh industrial media.
Flanged structure allows convenient disassembly and replacement without cutting pipes, greatly reducing maintenance difficulty.
Packing
Standard export wooden case packaging
Application Scenarios
The metal to metal flanged butterfly valve is widely used in power, petrochemical, metallurgy, central heating, water treatment, coal chemical and ship industries for steam, flue gas, hot oil, corrosive liquid and gas pipelines.
Material Specifications
| Part name | Material |
| Valve body | WCB, QT450-10, Q235, Alloy steel, stainless steel, etc. |
| Valve stem | Alloy steel, stainless steel |
| Seal ring | Stainless steel composite multi-level |
| Packing | Flexible graphite or stuffing |
| Valve seat | Stainless steel, cobalt based hard alloy |
| Valve stem | Stainless steel |
Dimension
| PN (MPa) | DN (mm) | L | D | D1 | D2 | Z-φd | b | f | H | H0 | A | B |
| 1.0 | 150 | 140 | 285 | 240 | 211 | 8-φ22 | 24 | 2 | 385 | 230 | 66 | 150 |
| 200 | 152 | 340 | 295 | 266 | 8-φ22 | 24 | 2 | 471 | 297 | 85 | 170 | |
| 250 | 165 | 395 | 350 | 319 | 12-φ22 | 26 | 2 | 533 | 327 | 85 | 170 | |
| 300 | 178 | 445 | 400 | 370 | 12-φ22 | 26 | 2 | 606 | 364 | 106 | 205 | |
| 350 | 190 | 505 | 460 | 429 | 16-φ22 | 26 | 2 | 694 | 404 | 106 | 205 | |
| 400 | 216 | 565 | 515 | 480 | 16-φ26 | 26 | 2 | 757 | 444 | 130 | 240 | |
| 450 | 222 | 615 | 565 | 530 | 20-φ26 | 28 | 2 | 814 | 472 | 155 | 240 | |
| 500 | 229 | 670 | 620 | 582 | 20-φ26 | 28 | 2 | 902 | 522 | 169 | 306 | |
| 600 | 267 | 780 | 725 | 582 | 20-φ30 | 30 | 5 | 1048 | 590 | 198 | 324 | |
| 700 | 292 | 895 | 840 | 794 | 24-φ30 | 30 | 5 | 1277 | 810 | 220 | 335 | |
| 800 | 318 | 1015 | 950 | 901 | 24-φ33 | 32 | 5 | 1385 | 844 | 241 | 356 | |
| 900 | 330 | 1115 | 1050 | 1001 | 28-φ33 | 34 | 5 | 1490 | 890 | 241 | 356 | |
| 1000 | 410 | 1230 | 1160 | 1112 | 28-φ36 | 34 | 5 | 1985 | 1228 | 241 | 356 | |
| 1200 | 470 | 1455 | 1380 | 1328 | 32-φ39 | 38 | 5 | 2191 | 1340 | 35 | 785 | |
| 1400 | 530 | 1675 | 1590 | 1530 | 36-φ42 | 42 | 5 | 2326 | 1450 | 35 | 785 | |
| 1600 | 600 | 1915 | 1820 | 1750 | 40-φ48 | 46 | 5 | 2685 | 1590 | 35 | 785 | |
| 1800 | 670 | 2115 | 2020 | 1950 | 44-φ48 | 50 | 5 | 2924 | 1710 | 60 | 865 | |
| 1.6 | 150 | 140 | 285 | 240 | 211 | 8-φ22 | 24 | 2 | 385 | 230 | 66 | 150 |
| 200 | 152 | 340 | 295 | 266 | 8-φ22 | 24 | 2 | 471 | 297 | 85 | 170 | |
| 250 | 165 | 395 | 350 | 319 | 12-φ22 | 26 | 2 | 533 | 327 | 85 | 170 | |
| 300 | 178 | 445 | 400 | 370 | 12-φ22 | 32 | 2 | 606 | 364 | 106 | 205 | |
| 350 | 190 | 505 | 460 | 429 | 16-φ22 | 34 | 2 | 694 | 404 | 106 | 205 | |
| 400 | 216 | 565 | 515 | 480 | 16-φ26 | 36 | 2 | 757 | 444 | 130 | 240 | |
| 450 | 222 | 615 | 565 | 530 | 20-φ26 | 38 | 2 | 814 | 472 | 155 | 240 | |
| 500 | 229 | 670 | 620 | 582 | 20-φ26 | 42 | 2 | 902 | 522 | 169 | 306 | |
| 600 | 267 | 780 | 725 | 582 | 20-φ30 | 44 | 5 | 1048 | 590 | 198 | 324 | |
| 700 | 292 | 895 | 840 | 794 | 24-φ30 | 46 | 5 | 1277 | 810 | 220 | 335 | |
| 800 | 318 | 1015 | 950 | 901 | 24-φ33 | 48 | 5 | 1385 | 844 | 241 | 356 | |
| 900 | 330 | 1115 | 1050 | 1001 | 28-φ33 | 34 | 5 | 1490 | 890 | 241 | 356 | |
| 1000 | 410 | 1230 | 1160 | 1112 | 28-φ36 | 38 | 5 | 2010 | 1245 | 241 | 356 | |
| 1200 | 470 | 1455 | 1380 | 1328 | 32-φ39 | 42 | 5 | 2220 | 1360 | 35 | 785 | |
| 1400 | 530 | 1675 | 1590 | 1530 | 36-φ42 | 44 | 5 | 3437 | 1456 | 35 | 785 | |
| 1600 | 600 | 1915 | 1820 | 1750 | 40-φ48 | 46 | 5 | 2756 | 1650 | 35 | 785 | |
| 1800 | 670 | 2115 | 2020 | 1950 | 44-φ48 | 48 | 5 | 2985 | 1760 | 60 | 865 |
Frequently Asked Questions
Q: What temperature range can this flanged butterfly valve withstand?
A: This triple eccentric flanged butterfly valve operates efficiently under extreme working temperatures ranging from -190°C to 700°C.
Q: Which international manufacturing standards are supported?
A: The valve is compliant with major global standards, including API, EN, and JIS standards.
Q: How does the triple-offset structure achieve zero leakage?
A: The friction-free triple eccentric design ensures no contact or wear between the seat and seal ring during operation, delivering bidirectional bubble-tight zero-leakage performance.
Q: What body materials are available for custom orders?
A: The valve body is available in WCB, QT450-10, Q235, alloy steel, and stainless steel (such as 304 and 316 grades).
Q: Is maintenance easy when installed in main pipelines?
A: Yes. The full-flange connection allows convenient disassembly and seat/seal replacement without cutting pipes, minimizing system downtime.
