Three Eccentric Hard Seal Butterfly Valve Flanged Type DN50-2000mm 550°C Temperature Range
This advanced three-dimensional eccentric multi-layer hard seal butterfly valve features innovative metal sealing technology engineered for demanding industrial applications requiring exceptional performance and reliability.
Designed for high-temperature environments up to 550°C across multiple industries including metallurgy, power generation, petrochemical processing, and fluid regulation in drainage systems.
- Dual-seal design combines metal hard seal durability with elastic seal performance for exceptional sealing across all temperature conditions
- Three-dimensional eccentric structure minimizes friction between valve seat and butterfly plate with self-tightening sealing mechanism
- Stainless steel and cobalt-based hard alloy surfacing on sealing surfaces ensures superior wear resistance and extended service life
- Unique design enables effortless operation unaffected by medium pressure variations, ensuring reliable long-term performance
- Additional eccentric angle eliminates all contact friction during operation while allowing precise sealing pressure adjustment
| Parameter | Specification |
|---|---|
| Nominal Size (DN) | 50-2000mm | 50-500mm |
| Nominal Pressure (PN) | 0.6 | 1 | 1.6 | 2.5 | 4 MPa |
| Test Pressure (Strength) | 0.9 | 1.5 | 2.4 | 3.75 | 6 MPa |
| Test Pressure (Seal) | 0.66 | 1.1 | 1.76 | 2.75 | 4.4 MPa |
| Gas Seal Test | 0.6 MPa (all ratings) |
| Leakage Rate | <0.1×DN mm³/s (GB/T 13927-92 compliant) |
| Temperature Range | -40°C to 550°C (stainless steel/chrome molybdenum steel) |
| Compatible Media | Air, water, steam, gas, oil, and weakly corrosive acid/alkali/salt solutions |
| Drive Type | Worm gear transmission, electric actuation |
SND has specialized in metal goods manufacturing for 20 years, utilizing advanced techniques including sand casting, lost wax casting, lost foam casting, and precision machining. Our ISO 9001-certified quality control systems ensure consistent component reliability through comprehensive testing including spectrometer analysis, ultrasonic inspection, magnetic testing, permeability assessment, and tensile/yield strength verification.
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