Custom Big size WCB triple offset high performance flange butterfly valve Supplier, Manufacturer
Product Description
Characteristics
The large-size flanged triple eccentric butterfly valve features reinforced thick body and triple-offset metal hard seal. It boasts outstanding deformation resistance and self-tightening bidirectional bubble-tight shutoff. With full bore low-resistance flow path and stable flanged connection, it matches various heavy-duty actuators and serves high-temperature large-flow main pipelines in heating, power, metallurgy, environmental protection and petrochemical industries.
Key Advantages
The large butterfly valve with smooth straight flow path provides large flow coefficient and minimal pressure drop, ideal for main pipeline high-flow continuous operation.
Triple-offset flanged butterfly valve with metal hard seal achieves friction-free operation and self-tightening sealing, ensuring bidirectional zero leakage under strong flushing and large differential pressure.
Full flanged structure with uniform bolt force distribution provides high stability and vibration resistance for long-term main pipeline service.
Optimized torque structure matches large electric, pneumatic and worm gear actuators, realizing smooth and stable opening and closing.
Application Scenarios
The large size metal to metal flanged butterfly valve is extensively installed on large-bore main pipelines of municipal heating steam network, power plant flue gas & circulating water system, metallurgical hot air pipeline, desulfurization exhaust duct and petrochemical thermal oil & process gas piping.
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 |
Packaging
Standard export wooden case packaging ensures complete safety during international transportation.
Dimension & Technical Data
| 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 (FAQ)
Our large-size flanged butterfly valves strictly conform to API, EN, and JIS international standards, ensuring seamless integration and replacement for global industrial projects.
The valve is engineered for extreme working environments, supporting a broad operating temperature range from -190°C up to 700°C (-310°F to 1292°F).
Through its triple-offset (triple eccentric) structure combined with a metal-to-metal hard seal design, the valve features friction-free operation and self-tightening sealing performance for bidirectional zero-leakage shutoff.
It comes standard with handle operation and features an optimized low-torque design compatible with electric, pneumatic, and worm gear heavy-duty actuators.
We offer a wide range of body materials including WCB, QT450-10, Q235, Alloy Steel, and various grades of Stainless Steel to suit specific chemical and mechanical application requirements.
All valves are packed using standard export wooden cases to guard against impacts, moisture, and corrosion during sea or air transit.
