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Flap gate - List of Manufacturers, Suppliers, Companies and Products

Flap gate Product List

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Socket-type flap gate [Backflow prevention valve: F1 type]

Socket-type flap gate [Backflow prevention valve: F1 type]

This is a socket-type flap gate that can be directly attached to PVC pipes!

This is a simple flap gate that is ideal for drainage channels and countermeasures against backflow during river flooding. It is an economical and easy-to-install standard product. 【Made of synthetic resin】 ◎ The door body uses synthetic resin, making it lightweight and allowing it to open and close with minimal force. ◎ It does not use rubber, so maintenance is not required for a long time. 【Direct installation on PVC pipes】 ◎ It features a socket type for easy installation by simply inserting the PVC pipe. 【Rich delivery track record】 ◎ It has been used for many years across various regions nationwide. For inquiries or requests for various materials, please feel free to contact us at the following: 　　TEL: 052-444-4634 　　FAX: 052-441-7854 　　Email: web-inq@chububika.co.jp

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Automatic closure only during high water! 【Drain Flap Gate: F12F Type】

Automatic closure only during high water! 【Drain Flap Gate: F12F Type】

It is usually open! It automatically closes during high water levels! This is a new concept "flap gate" that reduces drainage and waste problems.

Always open type backflow prevention product [Drain Flap Gate] [Always Open Type] Being open most of the time means... ◎ High drainage capacity! ◎ Reduces the risk of debris getting stuck! [Backflow Prevention] ◎ Automatically closes when the external water level exceeds half the height of the door! [Easy to Open and Close with Little Force] ◎ The door body is made of lightweight reinforced plastic "FFU"! ◎ Features a double hinge mechanism for easy opening and closing with minimal effort! [Easy Post-Installation Type] ◎ Can be easily installed with post-installation anchors!

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Conventional design! Stainless steel/Iron [Square flap gate: F6 type]

Conventional design! Stainless steel/Iron [Square flap gate: F6 type]

Design can be customized according to water depth and size! This is a conventional flap gate that enhances workability and opening/closing and water-stopping performance!

【High Workability】 ◎ The door stop and door body can be disassembled, reducing the burden of welding work! ◎ The installation of the door body can be done with standard tools! * A post-installation specification with embedded anchor fixation can also be designed. 【High Water Stop and Opening/Closing Performance】 ◎ Adopting our unique double hinge mechanism for smooth opening and closing! ◎ Improved water stop performance with water stop rubber and smooth movement! 【Conventional Design Tailored to the Site】 ◎ Broadly compatible with various sizes and design water depths! * Please feel free to consult us regarding design conditions.

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Flap Gate (Band Type) "F9 Model"

Flap Gate (Band Type) "F9 Model"

Directly attachable to existing pipes with a band! Simple backflow prevention door.

The flap gate (band type) "F9 model" prevents external water from backflowing during floods or when full. It pursues a simple structure, achieving lightweight and significant economic efficiency improvements. The arm is supported at two points, allowing for smooth opening and closing, enhancing water tightness. It has few protrusions, minimizing debris adhesion. Installation involves wrapping and securing it with a band around existing pipes (some pipe types may not be compatible). 【Features】 ○ Direct installation on pipes possible (VU/VP/HP/SUS pipes/SGP pipes, etc.) ○ High corrosion resistance ○ Aluminum version has anti-corrosion coating For more details, please contact us or download the catalog.

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FRP flap gate

FRP flap gate

The introduction of a new gate that is resistant to seawater, in addition to its traditional functions, thanks to the use of FRP materials.

The "FRP Flap Gate" is a new gate that meets the needs of those responsible for water management facilities. By utilizing FRP materials, it is not only strong against seawater but also excels in economic efficiency, corrosion resistance, lightweight design, construction efficiency, and operational efficiency, in addition to its conventional functions. 【Overview】 ■ Standard Specifications (Effective Cross Section) ・ 600×600mm to 2000mm×2000mm ■ Achievements ・ Over 50 gates in 1985, including those in Abashiri, Hokkaido ・ Over 80 gates in 1985, including those in Nanjo, Okinawa * For more details, please refer to the PDF document or feel free to contact us.

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Aluminum alloy cast flap gate AGF type series

Aluminum alloy cast flap gate AGF type series

Lightweight, inexpensive, highly durable, easy to install and maintain!

Flap gates operate with even a small amount of water during drainage, and they respond sensitively and smoothly to differences in water levels inside and outside. They are required to maintain sufficient strength and functionality to prevent backflow. Additionally, designs and colors that match the environment are becoming increasingly important factors for future gates. The "Aluminum Alloy Cast Flap Gate AGF Series" is installed at the end of drainage pipes (inlets) in rivers and flood walls for internal drainage purposes, and it automatically opens and closes based on the water level difference, making it a valuable tool for backflow prevention gates. For more details, please contact us or refer to the catalog.

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Stainless steel flap gate "F4 type, F5 type"

Stainless steel flap gate "F4 type, F5 type"

Prevents backflow of external water during floods and high tides! Stainless steel flap gate.

The "F4 type" and "F5 type" are stainless steel flap gates designed to prevent backflow of external water during floods or high tides. They excel in corrosion resistance and waterproofing, and achieve high pressure resistance by having a spherical surface. The arms are supported at two points, allowing for smooth opening and closing, which enhances water tightness. With minimal protrusions, they effectively prevent debris accumulation. The "F4 type" is wall-mounted (all-anchor type), while the "F5 type" is band-fixed. 【Features】 ○ High corrosion resistance and waterproofing ○ Direct attachment to pipes possible (F5 type only) ○ Allowable water depth: within 3.5m to 5.0m For more details, please contact us or download the catalog.

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Low cost! Stainless/Aluminum/Iron [Flap Gate: Type F8]

Low cost! Stainless/Aluminum/Iron [Flap Gate: Type F8]

Achieve low cost with simple design! Easy to install with a wide variety! A new standard for metal flap gates!

【Low Cost】 ◎ Achieves low cost with a simple structure! 【Rich Variations】 ◎ Available in three types: stainless steel, aluminum, and iron! ◎ You can choose between round and square shapes! ◎ Designs without door stops are also possible! ◎ Custom sizes can be designed to fit the site! (Up to width x height 1000mm) 【High Performance】 ◎ Double hinge design allows for smooth opening and closing! ◎ Uses water-stopping rubber to ensure high water tightness! 【Easy Installation】 ◎ Simple installation with the included drive anchors!

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Harbor flap gates (round type and square type) "F8HM type and F8HK type"

Harbor flap gates (round type and square type) "F8HM type and F8HK type"

Prevents backflow of external water during high tide! Stainless steel flap gate.

The "F8 type" flap gate (round and square) for harbors prevents external water from backflowing during storm surges. It features a double hinge design that ensures high water tightness and smooth opening and closing. The door and stops are made of SUS323L (equivalent to SUS316L), which is particularly resistant to seawater. The allowable wave height is equivalent to 6.0m (equivalent to a water depth of 30m). It comes with all-anchor theft prevention nuts (in two locations). 【Features】 ○ Double hinge design ○ Resistant to seawater ○ Easy installation For more details, please contact us or download the catalog.

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Lightweight specification of FRP door body! 【Simple flap gate: F10 type】

Lightweight specification of FRP door body! 【Simple flap gate: F10 type】

Lightweight specification without FRP door body and door stop! Improved water resistance with water stop rubber and double hinges! This is a simple flap gate designed with construction efficiency in mind!

【Lightweight Design】 ◎ Utilizes lightweight and durable FRP to reduce the weight of the door! ◎ Eliminates door stops for further weight reduction! * Custom options with door stops are also available. 【Performance Improvement】 ◎ Adopts our unique double hinge for smooth opening and closing operation! ◎ Equipped with water-stopping rubber for effective sealing! 【Easy Installation】 ◎ Increased workability due to lightweight design! ◎ Installation is complete with 2 to 3 included drive anchors!

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