Flange Integral Duckbill Check Valve

(Total 2 Products)

Flange Integral Duckbill Check Valve

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Brand:Xinhuafeng
Min. Order:1 Piece/Pieces
Transportation:Ocean,Land,Air
Packaging:wooden case packing
Supply Ability:100000 Piece/ per Month
Place of Origin:China

Flange Integrated Duckbill Check Valve: Reliable Backflow Prevention for Diverse Fluid SystemsThe flange integrated duckbill check valve—also known as the flange duckbill valve or rubber sewage check valve—stands as a specially designed solution...

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High Pressure Duckbill Check Valve

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Brand:Xinhua Feng
Min. Order:1
Transportation:Ocean,Land,Air
Packaging:wooden case packing
Supply Ability:100000 Piece/ per Month

One-way barrier of high-pressure system: High Pressure Duckbill Check Valve's core performance and system synergyIn high-pressure fluid conveying systems, the unidirectional stable flow of the medium is the key to ensuring the safety and operational...

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A Flange Integral Duckbill Check Valve is a high-performance backflow prevention device merging a one-piece Flange and Duckbill Valve design, engineered for superior sealing and structural integrity in demanding pipeline systems. Its structure features an integral flange housing—typically stainless steel or carbon steel—permanently fused with a flexible elastomer duckbill sleeve (EPDM, PTFE, or nitrile), eliminating potential leak points between separate flange and Valve components.

The integral design ensures uniform pressure distribution across the flange face, handling higher pressures than non-integral variants, making it ideal for industrial pipelines, water treatment plants, and marine systems. Unlike assembled flange valves, its one-piece construction reduces installation errors and enhances long-term reliability, critical for high-pressure or corrosive media applications.

Operation relies on the duckbill sleeve’s inherent flexibility: forward flow pressure opens the slit for media passage, while reverse pressure collapses the sleeve to form a tight seal, preventing backflow without mechanical parts. This design resists clogging by solids or slurries, outperforming traditional check valves in dirty fluid environments.

Constructed with corrosion-resistant materials, stainless steel models suit chemical processing, while carbon steel variants work for industrial fluids. The elastomer sleeve withstands temperatures from -40°C to 120°C, maintaining flexibility across operational ranges. Flange dimensions adhere to standard specs (ANSI, DIN), ensuring compatibility with pipeline flanges.

In system integration, it pairs with Bellow Expansion Joints to absorb thermal movement, Dismantling Joints for maintenance access, and Flange Adaptors for varying flange standards. It complements Steel Tees in branch lines requiring backflow protection and works with Reducer Pipes for diameter transitions.

Key advantages include leak-tight integrity, high pressure tolerance, and low maintenance. The integral flange eliminates gasket failures, while the no-moving-parts design ensures durability. By combining robust construction with reliable backflow prevention, it ensures safe operation in critical fluid systems requiring uncompromising performance.

Flange Intergal Duckbill Check Valve

The flange integral duckbill check valve relies on the flow of the medium itself to automatically open and close the valve disc to prevent the medium from flowing back. When the liquid passes through the valve, the valve opens; when the flow or pressure increases, the opening amplitude of the valve also increases; when the water flow stops, the backwater pressure or atmospheric pressure will press the valve to prevent backflow. It adopts flange connection, has the characteristics of corrosion resistance and long service life, and is widely used in sewage systems, discharge systems, water pump outlets, lifting pump stations and submerged aeration systems.

Application

sewage systems, discharge systems, water pump outlets, lifting pump stations and submerged aeration systems.

Material of rubber

EPDM or as you requested

Product Detail

The flange integral duckbill check valve consists of key parts such as valve body, duckbill disc, flange connection part, sealing structure and other accessories. These parts work together to ensure the stability and sealing performance of the flange integral duckbill check valve in the pipeline system, while realizing the check function. In practical applications, the flange integral duckbill check valve is widely used in various industrial fields due to its simple structure, easy installation, and reliable sealing.

The valve body is equipped with a water flow channel to guide the fluid to pass smoothly. At the same time, the valve body also has certain corrosion resistance and wear resistance, and can adapt to various harsh working conditions.

The duckbill valve disc is a key component of the flange integral duckbill check valve. It is duckbill-shaped and can automatically open and close according to the direction of medium flow.

The rubber flange is an important part of the flange integral duckbill check valve. It is integrated with the valve body and has a gasketed metal flange.

CUSTOMER

VOICE

WHAT A CLIENT SAY?

The valve is made of high-quality rubber material, has strong corrosion resistance and wear resistance, and can be used for a long time under harsh working conditions without damage. The rubber flange is integrated with the valve body, without the need for additional sealing materials, which simplifies the installation process and improves the sealing performance. The excellent sealing performance can ensure that the fluid in the pipeline system will not leak out, ensuring the cleanliness and safety of the working environment.

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Application areas

The application areas of pipelines are very wide, mainly including municipal engineering, building water supply and drainage, industrial production, agricultural irrigation, new energy and other fields.

FAQ

Important things you should know

What should be paid attention to during installation and connection?

The flange should correspond to the size of the connecting flange to ensure the seal after the connection is tightened. Also, be careful not to damage the flange lip of the rubber sewage check valve.

What should be paid attention to during storage and transportation?

Place it in a low temperature and dry place, stand it above the ground level, do not place it upside down or flat, and keep it away from heat sources, ozone, engine oil, strong acid, and strong alkali areas. It is strictly forbidden to expose it to the sun and sharp tools to scratch the surface.

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Flange Integral Duckbill Check Valve

Flange Integral Duckbill Check Valve

High Pressure Duckbill Check Valve

Flange Integral Duckbill Check Valve

High Pressure Duckbill Check Valve