Introduction to the rubber duckbill check valve
The duckbill check valve is made of resilient neoprene and artificial fibres, which are
specially processed to resemble a duck's beak, hence the name
duckbill valve. In the absence of internal pressure, the mouth of
the duck closes under the action of elasticity. As the internal
pressure increases, the outlet of the duckbill gradually increases
and the liquid can be discharged at a high flow rate.
The role of the rubber duckbill check valve
1. Prevent fluid backflow: In applications such as sewage drainage systems, rainwater
drainage systems, and underground parking lot drainage systems,
rubber duckbill check valves can effectively prevent floods and
sewage from backflowing into basements or municipal pipelines to
avoid major losses.
2. Odor barrier: The valve has an odor barrier function to prevent the odor
diffusion of sewage or odorous fluids.
3. Maintenance-free: Since it has no moving components, it does not need to carry out
any maintenance, reducing operating costs.
4. Strong adaptability: It can adapt to different working conditions and material
requirements, customize valves with special needs, and have a long
life.
5. Prevent clogging: Even in the presence of blockages such as sediment, stones,
vegetation, marine life, etc., the rubber duckbill check valve can
maintain normal operation and will not close loosely due to foreign
objects.
6. Suitable for a variety of environments: Suitable for coastal areas, beaches, docks, reservoirs, municipal
flood discharge, sewage and other environmentally friendly green
applications, replacing the easy to be blocked door check valve.
7. Prevent backfilling and backflow: In the rainy season or when the water level rises, it can
effectively prevent sewage or flood backflow into the street sewer
and basement to avoid major losses.
8. Good diffusion performance: The discharged sewage can reach the flow rate required for
effective mixing, which is much smaller than the flow rate required
for the same mixing of circular pipelines, and has good diffusion
performance.
Carefully check the duckbill valve data before leaving the factory:
1. Confirm the duckbill valve specifications
2. Measure the length and width of the duckbill valve; use a
caliper to measure the outer diameter, thickness and other data of
the duckbill valve flange; ensure that the customer's customized
requirements are met
Main connection size
| Model | Pipe Nominal Diameter | Length(mm) | High(mm) | Flange outside diameter(mm) |
| XH4150-150-F | 50 | 150 | 100 | 150 |
| XH4180-220-F | 80 | 220 | 140 | 200 |
| XH41100-250-F | 100 | 250 | 200 | 225 |
| XH41150-340-F | 150 | 340 | 265 | 275 |
| XH41200-420-F | 200 | 420 | 325 | 338 |
| XH41250-520-F | 250 | 520 | 425 | 400 |
| XH41300-620-F | 300 | 620 | 525 | 485 |
| XH41350-700-F | 350 | 700 | 625 | 525 |
| XH41400-800-F | 400 | 800 | 725 | 588 |
| XH41450-900-F | 450 | 900 | 825 | 625 |
| XH41500-980-F | 500 | 980 | 925 | 688 |
| XH41600-1120-F | 600 | 1120 | 1025 | 800 |
| XH41700-1180-F | 700 | 1180 | 1125 | 969 |
| XH41800-1350-F | 800 | 1350 | 1400 | 1080 |
| XH41900-1500-F | 900 | 1500 | 1525 | 1150 |
| XH411000-1600-F | 1000 | 1600 | 1725 | 1350 |
| XH411200-1840-F | 1200 | 1840 | 1950 | 1485 |
FAQ
Q: How can you guarantee the quality or any warranty?
A: If there is a quality problem during use, all products can be
returned according to the consumer's requirements.
Q: Do you provide samples? Is it free or charged?
A: Yes, we can offer sample free but shipping charges covered by
customer.
Q: What are our rubber materials?
A: There are natural rubber, butyl rubber, nitrile rubber, EPDM
rubber, neoprene, fluorine rubber ,food grade rubber and so on.
Q: What are the standards of your flanges?
A: Our flange standards are DIN, ANSI, BS, ISO, JIS, EN 1092, etc.
Q: Is it possible to customize products of different sizes?
A: Of course, the above specifications are standard specifications,
and we can design and manufacture them according to requirements.
Q: Where is your loading port?
A: Shanghai, Qingdao or Tianjin in China.
