DN600 PN16 Weather Resistant Rubber EPDM Flanged Duckbill Duckbill Non Return Valve
Basic structure of flange duckbill valve
Flange duckbill valve is a valve that uses a rubber duckbill structure to achieve a one-way check function. It is installed in the pipeline system through a flange connection and is mainly used to prevent fluid backflow.
Composition
Valve body: usually metal (such as cast iron, carbon steel, stainless steel), with flange interface.
Duckbill part: elastic rubber material (such as NBR, EPDM, neoprene), flat duckbill shape, open and close with fluid pressure.
Working principle
Forward flow: fluid pressure opens the duckbill and the medium passes through.
Reverse flow: The duckbill closes under the action of back pressure, relying on elastic seal to prevent backflow, similar to the function of a one-way check valve.
| Connection size of Flanged Rubber Duckbill Check Valve |
| Type | Nominal diameter of pipe | L(Length)mm | Height | External diameter of flange |
| 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 |
Material selection
Valve body material: Cast iron, ductile iron, 304/316 stainless steel are selected according to the medium.
Duckbill material:
EPDM: Ozone resistant, aging resistant, suitable for -20℃~120℃.
NBR: Good oil resistance, suitable for oily wastewater.
Fluororubber (FKM): Resistant to high temperature (150℃) and strong corrosive media.
Core features
No mechanical parts: Relying on rubber elasticity, simple structure, low failure rate.
Self-cleaning design: Impurities can be flushed during opening and closing, suitable for media containing particles and fibers.
Low head loss: The flow channel is smooth when fully open, reducing pressure
Application areas
Drainage system: Municipal rainwater and sewage pipe network, pump station outlet.
Industrial field: Corrosive medium transportation in chemical and paper mills.
Environmental protection engineering: Seawater desalination, anti-backflow at the discharge outlet of sewage treatment plants.
Product Tags:
|
|
DN600 PN16 Weather Resistant Rubber EPDM Flanged Duckbill Non Return Valve Images
|
