Liwei Rubber Duckbill Check Valve DN50-DN3000 for Water Treatment & Drainage Systems
The rubber duckbill valve is an innovative water supply and drainage solution featuring a unique "duckbill" design that enables forward discharge and reverse check functionality. Constructed from durable chloroprene rubber with reinforced fiber structures, this valve offers exceptional performance in demanding applications.
- Automatic operation based on water pressure differential - safe and reliable
- Minimal forward flow resistance with low opening pressure (as low as 0.01 meters water head)
- Excellent reverse sealing performance prevents backflow
- Corrosion-resistant construction with superior aging resistance and dimensional stability
- 100% all-rubber structure available in various material options for specific corrosion requirements
- Non-clogging design ensures reliable operation
- Long service life with zero maintenance requirements
- No moving parts, electrical signals, or manual operation - completely silent operation
- Multiple installation configurations to meet specific project requirements
| Model | Nominal Diameter (DN) | Length (L) | Height (H) | Flange OD (C) |
|---|---|---|---|---|
| XF50-150-F | 50 | 150 | 100 | 150 |
| XF80-220-F | 80 | 220 | 140 | 200 |
| XF100-250-F | 100 | 250 | 200 | 225 |
| XF150-340-F | 150 | 340 | 265 | 275 |
| XF200-420-F | 200 | 420 | 325 | 338 |
| XF250-520-F | 250 | 520 | 425 | 400 |
| XF300-620-F | 300 | 620 | 525 | 485 |
| XF350-700-F | 350 | 700 | 625 | 525 |
| XF400-800-F | 400 | 800 | 725 | 588 |
| XF450-900-F | 450 | 900 | 825 | 625 |
| XF500-980-F | 500 | 980 | 925 | 688 |
| XF600-1120-F | 600 | 1120 | 1025 | 800 |
| XF700-1180-F | 700 | 1180 | 1125 | 969 |
| XF800-1350-F | 800 | 1350 | 1400 | 1080 |
| XF900-1500-F | 900 | 1500 | 1525 | 1150 |
| XF1000-1600-F | 1000 | 1600 | 1725 | 1325 |
| XF1200-1840-F | 1200 | 1840 | 1950 | 1485 |
Liwei rubber duckbill valves are ideal for water treatment plants, sewage treatment facilities, drainage systems, chemical processing plants, and power generation facilities. These high-performance valves withstand harsh operating conditions while maintaining reliable backflow prevention.
Our technical support team provides comprehensive assistance with product selection, customization options, and installation guidance. We offer ongoing maintenance and repair services to ensure optimal long-term performance.
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