Flap gate(1000) - メーカー・企業と製品の一覧

更新日： 集計期間:Aug 13, 2025～Sep 09, 2025
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Flap gateの製品一覧

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Flap gate

Flap gate

Since it will be installed using all anchors, it can be easily installed on-site.

We would like to introduce the 'Flap Gate' handled by Inoue Iron Works Co., Ltd. Since it is installed using all anchors, it can be easily installed on-site. We offer various types, including the retrofitted "Simple Flap Gate" and the "Waterproof Flap Gate." Additionally, we manufacture products made of iron, stainless steel, and aluminum alloy. Furthermore, we also have band-type products available for cases where pipes such as fume pipes or cast iron pipes protrude from the wall. Please feel free to contact us. 【Product Lineup】 ■ Simple Flap Gate ■ Waterproof Flap Gate *For more details, please refer to the PDF materials or feel free to contact us.

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

Low cost! Stainless steel/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】 ◎ Achieve 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 your site! (Up to width x height 1000mm) 【High Performance】 ◎ Double hinge design allows for smooth opening and closing! ◎ High water tightness ensured by using waterproof rubber! 【Easy Retrofit】 ◎ Simple installation with the included drive anchors!

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  • Sanitary fixtures

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Anchor-type flap gate for backflow prevention and tide protection

Anchor-type flap gate for backflow prevention and tide protection

Just fix it to the concrete structure with anchor bolts! It opens and closes automatically with the difference in water level.

We handle "Anchor-type flap gates for backflow prevention and tide control." Double hinges are used in the hinge section, and P-type rubber is adopted in the watertight section to enhance water tightness. We offer two types: aluminum alloy and stainless steel, which can be used for backflow prevention at various drainage outlets from rivers to sewage systems and ports. 【Features】 ■ Suitable for tidal work ■ Easy installation ■ Excellent water tightness ■ Material can be selected according to application ■ Double hinges adopted ■ Automatically opens and closes with water level difference *For more details, please refer to the PDF document or feel free to contact us.

  • Watergate

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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 harbor flap gate (round and square type) "F8 type" prevents external water from backflowing during storm surges. It adopts a double hinge design, achieving 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 (at 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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  • Sanitary fixtures

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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 backflow of external water during floods or when fully submerged. 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 minimal protrusions to prevent debris accumulation as much as possible. Installation involves wrapping and securing it around existing pipes with a band (some types of pipes may not be suitable for installation). 【Features】 ○ Direct installation on pipes possible (VU/VP/HP/SUS pipes/SGP pipes, etc.) ○ High corrosion resistance ○ Aluminum version has a baked-on paint finish For more details, please contact us or download the catalog.

  • Sanitary fixtures

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KM Type Backflow Prevention Simple Flap Gate 'KMG Model'

KM Type Backflow Prevention Simple Flap Gate 'KMG Model'

The main body is made of PVC! It continuously drains rainwater into the waterway, and during high water levels, the flap gate closes.

The "KMG type" is a simple flap gate (backflow prevention valve) made of PVC, installed on the waterway side of drainage pipes such as rainwater drainage pipes, to prevent backflow during rising water levels. Under normal conditions, it allows rainwater drainage to flow into the waterway, and during rising water levels, the flap gate closes to prevent backflow. Recently, there has been an increase in its use for drainage pipes installed on river parapet walls. It is also used to prevent the intrusion of pests from drainage pipes and to act as a deodorizing valve. Since it is installed to cover the discharge outlet, it can be used without being restricted by the shape of the outlet. The main body is equipped with a watertight packing and is fixed with anchor bolts. The anchor bolts are included with the product. 【Features of KMG Type】 ■ The main body is made of PVC ■ Convenient for easily installing a flap gate ■ The main body comes with watertight packing ■ The main body is fixed using anchor bolts ■ Compatible outlet sizes up to 1,000mm square Custom sizes can also be produced as long as they do not exceed the maximum size. ■ Applicable water depth: KMG-100 to 800 is up to 2m, KMG-850 to 1000 is up to 1.5m ■ It does not provide 100% watertightness *For more details, please refer to the PDF document or feel free to contact us.

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  • Watergate
  • Port supplies
  • Piping materials (plastic pipes)

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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 respond sensitively and smoothly to differences in water levels inside and outside. They are required to maintain sufficient strength and functionality during backflow prevention. Additionally, designs and colors that match the environment are increasingly being highlighted as 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, automatically opening and closing due to differences in water levels, making it a valuable tool for backflow prevention gates. For more details, please contact us or refer to the catalog.

  • Airport facilities

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

Automatic closure only during flooding! 【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 garbage issues.

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"! ◎ Double hinge mechanism allows for easy opening and closing with minimal effort! [Easy Post-Installation Type] ◎ Can be easily installed with post-installation anchors!

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  • Sanitary fixtures

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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 tailored to water depth and size! This is a conventional flap gate that enhances construction efficiency and improves 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 Stopping and Opening/Closing Performance】 ◎ Adopting our unique double hinge mechanism for smooth opening and closing! ◎ Improved water stopping performance with water stopping rubber and smooth movement! 【Conventional Design Tailored to the Site】 ◎ Wide compatibility with various sizes and design water depths! * Please feel free to consult us regarding design conditions.

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  • Hoist/Crane

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Stainless steel flap gate "Type F4, Type F5"

Stainless steel flap gate "Type F4, Type F5"

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 water resistance, and achieve high pressure resistance by having a spherical surface. The two-point support arm allows for smooth opening and closing, enhancing 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 and water resistance ○ Direct attachment to pipes possible (F5 type only) ○ Allowable water depth: 3.5m to 5.0m For more details, please contact us or download the catalog.

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  • Sanitary fixtures

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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 is made of synthetic resin, making it lightweight and easy 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 Track Record】 ◎ It has been used for many years across the country. 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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  • Concrete wall
  • Sanitary fixtures
  • Airport facilities

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KM-type Insertable PVC Simple Flap Gate 'KMGC Type'

KM-type Insertable PVC Simple Flap Gate 'KMGC Type'

Convenient for later installation! PVC flap gate that can be installed by inserting it into existing pipes.

The "KMGC type" is a plug-in type simple flap gate (backflow prevention valve) installed on the waterway side of drainage pipes such as rainwater drainage pipes to prevent backflow during rising water levels. Under normal conditions, it allows rainwater to flow into the waterway, and during flooding, the flap gate closes to prevent backflow. Recently, there has been an increase in its use for drainage pipes installed on the parapet walls of rivers. It is also used to prevent odors and the entry of pests from drainage pipes. It can be easily installed by inserting it into existing pipes, making it convenient for later installation. The shape and installation method vary depending on the nominal diameter, so please specify the pipe diameter and type when ordering. <With flange type> for diameters from 75 mm to 150 mm If the surface of the pipe you wish to install this diameter (type) on has a slope, please request a sloped processing product. <Without flange type> for diameters from 200 mm to 400 mm Products of this diameter (type) can be used with or without a slope. *For more details, please refer to the PDF document or feel free to contact us.

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  • Piping materials (plastic pipes)
  • Watergate
  • Port supplies

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KM-type socket-equipped simple flap gate "KMGH model"

KM-type socket-equipped simple flap gate "KMGH model"

Fixed by covering the outside of the PVC pipe! Installed on the waterway side of the drainage pipe to prevent backflow during waterway flooding.

The "KMGH type" is a simple flap gate (backflow prevention valve) with a socket, installed on the waterway side of drainage pipes such as rainwater drainage pipes, to prevent backflow during rising water levels. Under normal conditions, it allows rainwater drainage to flow into the waterway, and during flooding, the flap gate closes to prevent backflow. Recently, there has been an increase in its use for drainage pipes installed on the parapet walls of rivers. It is also used to prevent odors and the entry of pests from drainage pipes. It is fixed by being covered over the outside of PVC pipes. For diameters 50 and 65, to prevent clogging, the connection diameter is the same as the nominal diameter, but the valve diameter is enlarged to 75mm. 【Features of KMGH Type】 ■ The main body is made of PVC ■ Convenient for easily installing a flap gate ■ The main body is covered over the outside of the PVC pipe and fixed with adhesive, making it useful for new installations ■ Compatible sizes range from 50mm to 600mm in diameter ■ Applicable water depth: up to 2m ■ It does not provide 100% watertightness *For more details, please refer to the PDF document or feel free to contact us.

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  • Piping materials (plastic pipes)
  • Watergate
  • Port supplies

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