Henan Lianghe Pipeline Equipment Co.,Ltd
| Payment Terms | T/T, D/P, D/A, Western Union, MoneyGram, L/C |
| Supply Ability | 2000 per month |
| Delivery Time | 7-10 work days |
| Packaging Details | Inside: Plastic Film ，Outside: Wooden Case |
| Keyword | Sewage duckbill check valve |
| Size | DN50-DN2000 |
| Application | Water Treatment |
| Connection | Flange |
| Temperature of Media | Medium Temperature |
| Rubber material | EPDM,NBR,NR |
| Media | Water |
| Brand Name | Lianghe |
| Model Number | XH41 |
| Certification | ISO 9001:2015 |
| Place of Origin | China |
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Product Specification
| Payment Terms | T/T, D/P, D/A, Western Union, MoneyGram, L/C | Supply Ability | 2000 per month |
| Delivery Time | 7-10 work days | Packaging Details | Inside: Plastic Film ，Outside: Wooden Case |
| Keyword | Sewage duckbill check valve | Size | DN50-DN2000 |
| Application | Water Treatment | Connection | Flange |
| Temperature of Media | Medium Temperature | Rubber material | EPDM,NBR,NR |
| Media | Water | Brand Name | Lianghe |
| Model Number | XH41 | Certification | ISO 9001:2015 |
| Place of Origin | China |
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.
Company Details
Business Type:
Manufacturer
Year Established:
2003
Total Annual:
40000000-60000000
Employee Number:
100~150
Ecer Certification：
Verified Supplier
The company adheres to the business philosophy of "customer satisfaction is our first duty, all employees are responsible for creating quality, continuous improvement sets new heights, honest service builds reputation", and wholeheartedly provides high-quality products and profes... The company adheres to the business philosophy of "customer satisfaction is our first duty, all employees are responsible for creating quality, continuous improvement sets new heights, honest service builds reputation", and wholeheartedly provides high-quality products and profes...
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