Van bướm dạng wafer hai trục lệch tâm hiệu suất cao
WDL Valve high performance double offset wafer butterfly valves offer high-cycle shut-off with replaceable PTFE, RPTFE or PPL seats for gas, vacuum and industrial pipeline service.
Mô tả
Van bướm dạng wafer hai trục lệch tâm hiệu suất cao
WDL Valve high performance double offset wafer butterfly valves are engineered for
dependable isolation in high-cycle industrial pipeline service. The double-offset
structure reduces friction between the disc and seat during opening and closing, helping
minimize sealing-surface wear and operating torque.
This valve series is suitable for gas, vacuum, water and compatible process media.
It is widely used in power generation, petrochemical, coal chemical, metallurgy, water
systems, pulp and paper, textile dyeing and light industrial applications.
Main Features
- High-performance double-offset design for frequent open-close operation.
- Compact wafer body for installation between pipeline flanges.
- PTFE, reinforced PTFE, TFM or PPL seat options.
- Replaceable seat structure for applicable valve configurations.
- Seat maintenance can be completed by removing the retaining insert without dismantling the disc and stem assembly.
- Available with manual, worm gear, pneumatic and electric actuators.
- Multiple body, disc and stem materials for corrosive and severe-service applications.
- ISO 5211 mounting platform for convenient actuator installation.
- Customized dimensions, materials, pressure ratings and connection standards available.
Các tiêu chuẩn áp dụng
| Mặt hàng | Specification |
|---|---|
| Loại van | High performance double offset wafer butterfly valve |
| Phạm vi kích thước | DN50–DN600 / NPS 2–24 |
| Flange Standard | HG 20592 PN10–PN40, ASME B16.5 Class 150–300, JIS 10K–16K |
| Face-to-Face Standard | GB/T 12221 và API 609 |
| Lắp đặt bộ truyền động | ISO 5211 |
| Seat Materials | PTFE, RPTFE, TFM và PPL |
Main Component Materials
| No. | Thành phần | Các tài liệu có sẵn |
|---|---|---|
| 1 | End Cover | Carbon steel, stainless steel or alloy steel |
| 2 | Sealing Ring | PTFE, RPTFE or PPL |
| 3 | Retaining Ring | Stainless steel or alloy steel |
| 4 | Bearing | Composite material |
| 5 | Đĩa | Stainless steel or alloy steel |
| 6 | Thân | Stainless steel or alloy steel |
| 7 | Cylindrical Pin | Stainless steel or alloy steel |
| 8 | Valve Seat | PTFE, RPTFE or PPL |
| 9 | Sealing Gland | Carbon steel, stainless steel or alloy steel |
| 10 | Lock Nut | Stainless steel or alloy steel |
| 11 | Bushing | Composite material |
| 12 | Thân van | Carbon steel, stainless steel or alloy steel |
| 13 | Packing Seal | RPTFE |
| 14 | Packing Gland | Carbon steel, stainless steel or alloy steel |
Overall and Connection Dimensions
Unit: mm
| DN | NPS | ØA | ØB | C | D | E | F | ØL | H | ØN | ØM1 | 1-(n-ØP) | Custom ØM2 | Custom 2-(n-ØP) | ISO 5211 Mounting Pad |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 50 | 2″ | 47 | 100 | 133 | 82 | 16 | 43 | 43 | 11 | 90 | 70 | 4-Ø10 | 50 | 4-Ø7 | F05, F07 |
| 65 | 2.5″ | 64 | 120 | 148 | 96 | 16 | 46 | 65 | 11 | 90 | 70 | 4-Ø10 | 50 | 4-Ø7 | F05, F07 |
| 80 | 3″ | 77 | 132 | 158 | 103 | 16 | 46 | 78 | 11 | 90 | 70 | 4-Ø10 | 50 | 4-Ø7 | F05, F07 |
| 100 | 4″ | 95 | 157 | 180 | 118 | 20 | 52 | 97 | 14 | 92 | 70 | 4-Ø10 | — | — | F07 |
| 125 | 5″ | 119 | 188 | 199 | 133 | 20 | 56 | 128 | 14 | 95 | 70 | 4-Ø10 | — | — | F07 |
| 150 | 6″ | 142 | 216 | 223 | 148 | 23 | 57 | 143 | 17 | 125 | 102 | 4-Ø12 | 70 | 4-Ø10 | F07, F10 |
| 200 | 8″ | 188 | 268 | 260 | 182 | 25 | 62 | 190 | 19 | 125 | 102 | 4-Ø12 | — | — | F10 |
| 250 | 10″ | 237 | 323 | 295 | 242 | 28 | 68 | 235 | 22 | 150 | 125 | 4-Ø14 | 102 | 4-Ø12 | F10, F12 |
| 300 | 12″ | 283 | 375 | 338 | 280 | 30 | 78 | 280 | 27 | 165 | 140 | 4-Ø18 | 125 | 4-Ø14 | F12, F14 |
| 350 | 14″ | 321 | 420 | 370 | 308 | 35 | 92 | 315 | 27 | 195 | 165 | 4-Ø22 | 140 | 4-Ø18 | F14, F16 |
| 400 | 16″ | 371 | 475 | 405 | 340 | 38 | 102 | 365 | 36 | 200 | 165 | 4-Ø22 | — | — | F16 |
| 450 | 18″ | 422 | 533 | 445 | 375 | 50 | 114 | 410 | 36 | 200 | 165 | 4-Ø22 | — | — | F16 |
| 500 | 20″ | 471 | 585 | 482 | 415 | 50 | 127 | 457 | 46 | 220 | 165 | 4-Ø22 | — | — | F16 |
| 600 | 24″ | 562 | 692 | 557 | 470 | 55 | 154 | 542 | 46 | 240 / 280 | 165 | 4-Ø22 | 254 | 8-Ø18 | F16, F25 |
Operating Torque Reference
Unit: N·m. Torque values are reference values for actuator selection.
| DN | NPS | PTFE Seat Torque (N·m) | Metal Seat Torque (N·m) | ||||
|---|---|---|---|---|---|---|---|
| PN10 | PN16 | PN25 | PN10 | PN16 | PN25 | ||
| 50 | 2″ | 58 | 60 | 65 | 77 | 80 | 85 |
| 65 | 2.5″ | 59 | 62 | 68 | 80 | 85 | 92 |
| 80 | 3″ | 60 | 66 | 73 | 86 | 88 | 95 |
| 100 | 4″ | 77 | 85 | 97 | 102 | 107 | 117 |
| 125 | 5″ | 102 | 115 | 145 | 145 | 157 | 172 |
| 150 | 6″ | 144 | 158 | 200 | 198 | 216 | 235 |
| 200 | 8″ | 225 | 248 | 308 | 282 | 310 | 350 |
| 250 | 10″ | 319 | 350 | 330 | 375 | 415 | 476 |
| 300 | 12″ | 460 | 590 | 750 | 590 | 750 | 940 |
| 350 | 14″ | 690 | 900 | 1220 | — | — | — |
| 400 | 16″ | 1040 | 1380 | 1750 | — | — | — |
| 450 | 18″ | 1380 | 1800 | 2280 | — | — | — |
| 500 | 20″ | 1600 | 2180 | 3200 | — | — | — |
| 600 | 24″ | 2510 | 3100 | 4000 | — | — | — |
Dimensions and torque values are reference data. Final selection shall be based on the
approved WDL Valve drawing, actual medium, operating pressure, temperature, safety factor
and actuator requirements.
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