วาล์วประตูแบบมีดที่ควบคุมด้วยคันโยกแบบทิศทางเดียว
WDL Valve QZU lever operated knife gate valves provide economical unidirectional shut-off for wastewater, pulp, mining and process slurry service.
คำอธิบาย
วาล์วประตูแบบมีดที่ควบคุมด้วยคันโยกแบบทิศทางเดียว
WDL Valve QZU lever operated knife gate valve is an economical and dependable solution
for unidirectional shut-off in industrial pipelines. Its gate blade presses against a
replaceable seat to create the seal, making it suitable for media containing solids,
fibres, sludge or slurry.
The valve is widely used in wastewater treatment, pulp and paper, power generation,
chemical processing, food processing and mining applications. In addition to the manual
lever version, the QZU knife gate valve can be supplied with handwheel, bevel gear,
spur gear, chain wheel, electric, pneumatic, hydraulic or electro-hydraulic operation.
คุณสมบัติหลัก
- Unidirectional sealing design.
- Lever-operated rising stem arrangement for straightforward manual operation.
- Replaceable elastomer or polymer seat options.
- Suitable for wastewater, slurry, pulp, fibre-containing and abrasive media.
- Stainless steel, duplex and super duplex gate blade options.
- Available with resilient or metal seat configurations.
- Compact wafer-style body for installation between flanges.
- Manual and automated actuation options available for different project requirements.
Technical Specifications
| รายการ | ข้อมูลจำเพาะ |
|---|---|
| Model | QZU |
| ประเภทวาล์ว | Unidirectional lever operated rising stem knife gate valve |
| ช่วงขนาด | DN50–DN1600 |
| Body Materials | WCB, CF8, CF8M, CF3, CF3M; stainless steel and duplex materials available on request |
| Gate Materials | SS304, SS316, SS316L, SS310, 2205, F53 and F55 |
| วัสดุของที่นั่ง | EPDM, NBR, PTFE, Viton or metal seat |
| Packing Materials | PTFE, rubber, graphite, aramid fibre or high-water-based packing |
| Flange Standards | PN10, PN16, ASME B16.5 Class 150 and BS “D” / “E”; other standards on request |
Working Pressure
| Nominal Size | Maximum Working Pressure |
|---|---|
| DN50–DN250 | 10 kg/cm² (approximately 1.0 MPa) |
| DN300–DN400 | 6 kg/cm² (approximately 0.6 MPa) |
| DN450 | 5 kg/cm² (approximately 0.5 MPa) |
| DN500–DN600 | 4 kg/cm² (approximately 0.4 MPa) |
| DN700–DN1200 | 2 kg/cm² (approximately 0.2 MPa) |
วัสดุหลัก
| ไม่. | ส่วนประกอบ | วัสดุ |
|---|---|---|
| 1 | ตัววาล์ว | 304, 316, 2205, F53 or F55 |
| 2 | ที่นั่งวาล์ว | EPDM, NBR, PTFE, Viton or metal |
| 3 | แหวนยึด | WCB or 304 stainless steel |
| 4 | Gate Blade | 304, 304L, 316, 316L, 2205, F53 or F55 |
| 5 | Packing | PTFE + EPDM |
| 6 | ก้านปิดผนึก | WCB, CF8, CF3, CF8M or CF3M |
| 7 | Yoke Plate | Q235A carbon steel or 304 stainless steel |
| 8 | Fasteners | Zinc-plated steel, 304 or 316 stainless steel |
| 9 | ก้าน | 2Cr13, 304 or 316 stainless steel |
| 10 | Stem Nut | Aluminium bronze |
| 11 | Stem Support | Q235A carbon steel |
| 12 | ลูกปืน | Bearing steel |
| 13 | Handwheel | Ductile iron, grey iron or Q235A carbon steel |
ขนาดโดยรวมและขนาดการเชื่อมต่อ
หน่วย: มม.
| DN | L | ØO | ØD | ØS | f | M-1 | n-Ø | N-Ød | a° |
|---|---|---|---|---|---|---|---|---|---|
| 50 | 43 | 155 | 125 | 92 | 2 | 2-M16 | 2-Ø18 | — | 45° |
| 65 | 46 | 178 | 145 | 102 | 2 | 2-M16 | 2-Ø18 | — | 45° |
| 80 | 46 | 195 | 160 | 127 | 2 | 2-M16 | 2-Ø18 | 4-Ø18 | 22.5° |
| 100 | 52 | 225 | 180 | 148 | 2 | 2-M16 | 2-Ø18 | 4-Ø18 | 22.5° |
| 125 | 56 | 246 | 210 | 178 | 2 | 2-M16 | 2-Ø18 | 4-Ø18 | 22.5° |
| 150 | 56 | 280 | 240 | 202 | 2 | 2-M20 | 2-Ø22 | 4-Ø22 | 22.5° |
| 200 | 62 | 340 | 295 | 258 | 2 | 2-M20 | 2-Ø22 | 4-Ø22 | 22.5° |
| 250 | 68 | 400 | 340 | 308 | 2 | 4-M20 | 4-Ø22 | 4-Ø22 | 15° |
| 300 | 78 | 442 | 400 | 360 | 2 | 4-M20 | 4-Ø22 | 4-Ø22 | 15° |
| 350 | 78 | 505 | 460 | 416 | 2 | 6-M20 | 4-Ø22 | 6-Ø22 | 11.25° |
| 400 | 102 | 560 | 515 | 466 | 2 | 6-M24 | 4-Ø27 | 6-Ø27 | 11.25° |
| 450 | 114 | 615 | 565 | 520 | 2 | 8-M24 | 6-Ø27 | 6-Ø27 | 9° |
| 500 | 127 | 670 | 620 | 572 | 2 | 8-M24 | 6-Ø27 | 6-Ø27 | 9° |
| 600 | 154 | 780 | 725 | 652 | 2 | 8-M27 | 6-Ø30 | 6-Ø30 | 9° |
การใช้งานทั่วไป
- Municipal and industrial wastewater treatment
- Pulp and paper production lines
- Power plants and ash handling systems
- Chemical processing plants
- Food processing systems
- Mining, slurry and bulk solids handling
This is a unidirectional sealing valve. Dimensions, materials, pressure limits and flange
drilling are reference values. Final specifications shall be confirmed against the approved
WDL Valve technical drawing and project datasheet.
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