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Flanged Duckbill Check Valve

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Duckbill Check Valve with Flange Connection
- Brand: Xinhuafeng
- Packaging: wooden case packing
- Supply Ability: 100000 Piece/ per Month
- Min. Order: 1 Piece/Pieces
- Certificate: ISO9001
The core of leak prevention in liquid pipeline systems: Analysis of the Advantages of Flanged duckbill check valves and their matching componentsIn the safe operation of liquid pipeline systems, the reliability of valves directly determines the stability of fluid transmission. Duckbill Check Valve, as a widely used...

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Weatherproof Flanged Duckbill Check Valve
- Brand: Xinhuafeng
- Packaging: wooden case packing
- Supply Ability: 100000 Piece/ per Month
- Min. Order: 1 Piece/Pieces
- Certificate: ISO9001
Weather Resistance Flanged Duckbill Check Valve: Ensuring Reliable Flow ManagementThe Flanged Duckbill Check Valve is an essential component in flow management systems, designed to deliver efficient and reliable performance across various industrial and municipal applications. As a specialized Duckbill Check Valve,...

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Flanged Duckbill Blowdown Check Valve - Backflow Prevention
- Brand: Xinhuafeng
- Packaging: wooden case packing
- Supply Ability: 100000 Piece/ per Month
- Min. Order: 1 Piece/Pieces
- Certificate: ISO9001
Flanged Duckbill Blowdown Check Valve - A Reliable Backflow Prevention SolutionThe Flanged Duckbill Blowdown Check Valve is a specialized Duckbill Check Valve designed with a focus on backflow prevention in blowdown systems, making it an essential component in industrial wastewater discharge, boiler blowdown, and...

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Flanged Duckbill Check Valve-Backflow Prevention
- Brand: Xinhuafeng
- Packaging: wooden case packing
- Supply Ability: 100000 Piece/ per Month
- Min. Order: 1 Piece/Pieces
- Certificate: ISO9001
Flanged Duckbill Check Valve: A Reliable Solution for Sewage ControlThe flanged duckbill check valve is a crucial control component in pipeline systems, primarily functioning as a Duckbill Check Valve to prevent sewage backflow and control liquid flow. Its main structure features flange connections, ensuring a secure...

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Flanged Duckbill Check Valve
- Brand: Xinhuafeng
- Packaging: wooden case packing
- Supply Ability: 100000 Piece/ per Month
- Min. Order: 1
- Certificate: ISO9001
Introduction to Flanged Duckbill Check Valve The Flanged Duckbill Check Valve is a robust and reliable Duckbill Check Valve designed for secure and efficient flow control in pipeline systems, leveraging flange connections to ensure stability and sealing performance in various industrial applications. Its core...

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China Flanged Duckbill Check Valve Suppliers

A Flanged Duckbill Check Valve is a specialized backflow prevention device combining the reliable one-way flow control of a Duckbill Valve with the secure connection of Flange ends, designed for robust performance in pipeline systems. Its structure features a flanged metal housing—typically carbon steel or stainless steel—enclosing a flexible elastomer duckbill sleeve (EPDM, nitrile, or PTFE), with flange connections that bolt directly to pipeline flanges for a leak-tight seal.

The flange design ensures stable installation, distributing pressure evenly across the connection to handle higher pressures than threaded variants, making it ideal for industrial pipelines and municipal water systems. The duckbill sleeve operates without mechanical parts: forward flow pressure opens its slit for media passage, while reverse pressure collapses the slit into a tight seal, preventing backflow of fluids, slurries, or solids.

Constructed with corrosion-resistant materials, stainless steel flanges suit chemical processing, while carbon steel works for general industrial use. The elastomer sleeve resists chemicals, abrasion, and temperature extremes (-40°C to 120°C), maintaining flexibility across operational ranges. This combination excels in handling wastewater, industrial effluents, and corrosive media without clogging.

In system integration, it pairs seamlessly with components: Flange Adaptors bridge connections with varying flange specs, simplifying installation. It works with Bellow Expansion Joints to absorb vibrations while preventing backflow. Dismantling Joints nearby ease maintenance access, and Flexible Metal Hoses connected via flanges benefit from its reliable sealing.

Key advantages include secure flange mounting, clog resistance, and durability. The flanged ends ensure easy integration into large-diameter pipelines, while the no-moving-parts design reduces maintenance. By combining robust connections with efficient backflow prevention, it ensures safe, leak-free operation, making it indispensable in industrial and municipal fluid systems requiring high-pressure reliability.

Flanged Duckbill Check Valve

The flanged duckbill check valve is a special check valve with a flange connection and a full rubber structure. It is usually made of rubber and nylon yarn through an advanced vulcanization process. This design ensures that the valve body will never rust or corrode. The main features of the flanged duckbill check valve are its good check effect, quiet operation, and durability. It can replace the traditional gate check valve and solve the problem that the gate is easily blocked by sediment, sludge, stones, vegetation, marine animals, etc. In addition, the flanged duckbill check valve is made of all-natural rubber, has no extra mechanical components, and no mechanical transmission is involved during startup, so it is noise-free, trouble-free, and maintenance-free. It has a low opening pressure and can be opened with a 1 cm head. The head loss is extremely small, and it is suitable for weak acids, alkalis, sewage and other media. The flanged duckbill check valve is widely used in water wells, sewage pipes, reservoir docks, sewage pipes and other occasions. It is favored for its simple structure, low maintenance cost and strong applicability.

Temperature of Media

Medium Temperature

Application

Wells, Sewage Pipes, Reservoir Wharfs, Sewage Pipes, etc.

Product Detail

The flanged duckbill check valve consists of key parts such as valve body, duckbill disc, flange, fasteners and other accessories. These parts work together to ensure the stability and sealing performance of the flanged duckbill check valve in the pipeline system, while realizing the check function.

The valve body is usually designed with all-rubber, with built-in reinforcing fibers (such as nylon curtains) to enhance its flexibility and strength. This material selection makes the valve body resistant to sewage corrosion and has a long service life.

When the fluid passes through, the disc automatically opens under the action of the fluid pressure; when the fluid stops flowing or flows back, the disc automatically closes under the action of its own gravity and fluid pressure to prevent the fluid from flowing back.

The flange is connected to the pipeline system through fasteners such as bolts and nuts to ensure the reliability and stability of the connection.

CUSTOMER

VOICE

WHAT A CLIENT SAY?

The valve adopts all-rubber material and built-in reinforced fiber design, which makes it have strong corrosion resistance and anti-aging performance, and prolongs its service life. When the valve is closed, the duckbill-shaped valve disc can fit the valve seat tightly to form a reliable sealing structure. Customers appreciate the buffering and silencing effect of the valve during the opening and closing process, and believe that it can reduce noise pollution and improve the working environment. The all-rubber material and streamlined design of the valve help reduce vibration and noise when the fluid passes through.

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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 measures can be taken if the duckbill valve needs to be quickly closed in an emergency?

Manual operation, use of tools, pressure release, check safety measures, and verify valve function.

Characteristics of flanged duckbill check valves?

Flanged duckbill check valves are widely used in various drainage systems and industrial pipelines due to their all-rubber structure, good sealing performance, easy installation and long service life.

What are the installation positions of duckbill valves?

The correct installation position of duckbill valves includes horizontal pipelines, vertical pipelines, tanks, pipelines and cofferdams, etc. The specific position needs to be determined according to the type and use scenario of the duckbill valve.

What is a flanged duckbill check valve?

A flanged duckbill check valve is a device used to prevent sewage backflow. Its structure is mainly connected by flanges, and the valve body adopts a full rubber structure that will never rust or corrode.

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