OEM Three eccentric butterfly valve metal to metal lug type Suppliers, Manufacturers
Product Description
| Valve Type: | Lug butterfly valve | Structure: | Eccentric |
| Standard: | API/EN/JIS | Workmanship: | Investment casting |
| Sealing direction: | Bidirectional | Sealing grade: | Zero leakage |
| Temperature: | -190°C < T < 700°C | Operation: | Handle |
Characteristics
The triple eccentric butterfly valve lug type high performance valve is a metal to metal hard seal valve designed for heavy-duty industrial working conditions. Featuring an integrated threaded lug structure and triple-offset sealing design, it achieves friction-free opening and closing and reliable bidirectional tight shutoff. With a robust and compact body, the valve operates stably under high temperature, high pressure, abrasive and corrosive service environments.
Advantages
1. Flexible & Versatile Installation
The lug-type structure allows single-side blind closure and unilateral piping connection. It fits perfectly for pump nozzles, branch pipelines and equipment ports, greatly facilitating maintenance and disassembly.
2. High Structural Stability
All pipeline tension is borne by the lug bolts, protecting the valve body from deformation and pipeline stress. It features excellent vibration resistance and stable operation.
3. Friction-free & Zero-leakage Sealing
The triple eccentric design eliminates seal friction during operation. The metal hard seal ensures reliable bidirectional tight shutoff, with strong resistance to high temperature, high pressure and particle erosion for a longer service life.
4. Low Maintenance & Cost-effective
Compact and robust structure ensures low failure rate and easy daily maintenance, effectively reducing long-term operating costs.
Packing
Standard export wooden case packaging
Application Scenarios
The lug type triple offset butterfly valve widely used in power plants, heat supply stations, metallurgy, petrochemical and environmental desulfurization industries, suitable for high-temperature steam, flue gas, thermal oil, dusty and particle-containing media.
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 Specifications
| PN (MPa) | DN (mm) | L | D | D1 | Z- φ d | H | H0 | A | B |
|---|---|---|---|---|---|---|---|---|---|
| 1.6 | 150 | 70 | 211 | 240 | 8- φ22 | 385 | 230 | 66 | 150 |
| 200 | 71 | 266 | 295 | 12- φ22 | 471 | 297 | 85 | 170 | |
| 250 | 76 | 319 | 355 | 12- φ26 | 533 | 327 | 85 | 170 | |
| 300 | 83 | 370 | 410 | 12- φ26 | 606 | 364 | 106 | 205 | |
| 350 | 92 | 429 | 470 | 16- φ26 | 694 | 404 | 106 | 205 | |
| 400 | 102 | 480 | 525 | 16- φ30 | 757 | 444 | 130 | 240 | |
| 450 | 114 | 548 | 585 | 20- φ30 | 814 | 472 | 155 | 240 | |
| 500 | 127 | 609 | 650 | 20- φ33 | 902 | 522 | 169 | 306 | |
| 600 | 154 | 720 | 770 | 20- φ36 | 1048 | 590 | 198 | 324 | |
| 700 | 165 | 794 | 840 | 24- φ30 | 1277 | 810 | 220 | 335 | |
| 800 | 190 | 901 | 950 | 24- φ39 | 1385 | 844 | 241 | 356 | |
| 900 | 203 | 1001 | 1050 | 28- φ39 | 1490 | 890 | 241 | 356 | |
| 1000 | 216 | 1112 | 1170 | 28- φ42 | 1620 | 950 | 241 | 356 | |
| 1200 | 254 | 1328 | 1390 | 32- φ48 | 2191 | 1340 | 35 | 785 | |
| 1400 | 390 | 1530 | 1590 | 36- φ48 | 2326 | 1450 | 35 | 785 | |
| 1600 | 440 | 1750 | 1820 | 40- φ55 | 2685 | 1590 | 35 | 785 | |
| 1800 | 490 | 1950 | 2020 | 44- φ55 | 2924 | 1710 | 60 | 865 | |
| 2000 | 540 | 2150 | 2230 | 48- φ60 | 3186 | 1854 | 60 | 865 |
Frequently Asked Questions
Q1: What working temperature range can this lug butterfly valve withstand?
The valve operates stably across a wide temperature range of -190°C < T < 700°C, making it suitable for both cryogenic and extreme high-temperature applications.
Q2: What are the sealing performance standards for this valve?
This triple eccentric butterfly valve provides friction-free opening and closing with a bidirectional tight metal-to-metal hard seal, achieving a zero leakage performance grade standard under API, EN, and JIS guidelines.
Q3: What are the key installation advantages of the lug structure?
The lug-type design allows single-side blind closure and unilateral piping connections. Pipeline tension is absorbed by lug bolts, preventing valve body deformation while facilitating easy maintenance at pump nozzles and branch pipelines.
Q4: Which industrial applications and media suit this valve best?
It is widely utilized in power plants, heat supply stations, metallurgy, petrochemical, and environmental desulfurization industries. It handles high-temperature steam, flue gas, thermal oil, and dusty or particle-containing media.
Q5: What materials are available for the valve body and stem?
The valve body options include WCB, QT450-10, Q235, Alloy Steel, and Stainless Steel. The valve stem is available in high-strength Alloy Steel and Stainless Steel.
Q6: How is the product packaged for export shipment?
Products are packed using standard export wooden cases to protect the valve assembly from damage during ocean and air transportation.
