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  6. NDV Wear Type Diaphragm Valve: 400 Type

NDV Wear Type Diaphragm Valve: 400 Type

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last updated:Oct 15, 2025

Nippon Daiya Valve Co., Ltd.
Nippon Daiya Valve Co., Ltd.
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Exhibits high airtightness and valve seat sealing performance! Excellent in corrosion resistance, chemical resistance, and cleanability.

A diaphragm valve is a type of valve that has a structure for opening and closing the flow path using a flexible diaphragm (membrane) made of materials such as rubber. The "Wear-type diaphragm valve: Type 400" is the basic form of a diaphragm valve that has a weir in the flow path. The fluid passage section is streamlined and has no pocket areas, which minimizes liquid accumulation and provides self-cleaning properties. Due to the valve's structure, it exhibits high airtightness and seat sealing performance. There is a wide variety of materials available for the body and diaphragm, allowing it to accommodate a broad range of fluids. ▼Applicable fields: Chemicals, environmental and water treatment, steel, shipping, pharmaceuticals, food, semiconductors, power generation, etc. *For more details, please refer to the catalog (P6–P14) or feel free to contact us. (The English and Chinese versions of the catalog can be downloaded from the catalog page of the special website below.)

    valve
400形PR画像1.jpg.png

NDV Wear Type Diaphragm Valve: 400 Type

400形PR画像1.jpg.png
400形PR画像1.jpg.png 400形サブ.png
  • Related Link - http://www.ndv.co.jp/product/diaphragm/index.html
  • Special site - Product/service details - https://pr.mono.ipros.com/ndv/product/

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basic information

For more details, please refer to the catalog (P6-P14) or feel free to contact us. (The English and Chinese versions of the catalog can be downloaded from the catalog page of the special website below.)

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Chemicals, environmental and water treatment, steel, shipbuilding, pharmaceuticals, food, semiconductors, power generation business, etc.

catalog(2)

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[Latest Version] NDV "Diaphragm Valve" Comprehensive Catalog

[Latest Version] NDV "Diaphragm Valve" Comprehensive Catalog

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NDV Valve FAQ Frequently Asked Questions [Diaphragm Valve Edition]

NDV Valve FAQ Frequently Asked Questions [Diaphragm Valve Edition]

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News about this product(5)

VIETWATER 2024

Notice of participation in "VIETWATER 2025" from Wednesday, October 22, 2025, to Friday, October 24, 2025. {Case studies are also being introduced!!}

  • Seminar・Event

Nihon Diaball Valve Co., Ltd. will be exhibiting at "VIETWATER 2025," which will be held in Ho Chi Minh City, Vietnam, from October 22 (Wednesday) to October 24 (Friday), 2025. This exhibition is the largest water treatment-related exhibition in Vietnam, and we will showcase various valves suitable for water treatment equipment, including our representative "diaphragm valves." [Exhibition Content] ■ Diaphragm Valves - We will present various lining products with excellent corrosion and chemical resistance. - We will introduce valves optimal for individual processes such as purification equipment, sludge treatment equipment, and pure water systems. ■ Ball Valves - In addition to standard two-way valve types, we offer a series of ball valves suitable for a wide range of fields. - We will showcase various valve seats that can be used under special conditions, such as with abrasive fluids. We sincerely look forward to your visit.

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Introduction to efforts regarding the environment

Introduction to initiatives for the environment

  • Other・notification

Nihon Diaphragm Valve Co., Ltd. obtained ISO 14001 certification in 2008 with the aim of continuously reducing environmental impact and is engaged in environmental activities. In the case of diaphragm valves, the simple structure consisting of three units: the drive part, diaphragm, and body results in fewer parts compared to other valve types, eliminating waste of consumable parts. [General Initiatives] ■ ISO 14001 certification obtained ■ Promotion of paperless operations ■ Consideration for packaging materials For more details, please refer to the related PDF materials.

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NDV

Notice of participation in the Shenzhen International Semiconductor Technology and Application Exhibition (SEMI-e) from May 16 (Tuesday) to May 18 (Thursday), 2023.

  • Seminar・Event

Daiya Valve Co., Ltd. will exhibit at the "Shenzhen International Semiconductor Technology and Application Exhibition (SEMI-e)" held at the Shenzhen Futian Exhibition Center from May 16 (Tuesday) to May 18 (Thursday), 2023. This exhibition is a comprehensive international showcase related to manufacturing technologies, equipment, and materials in the semiconductor industry, and we will present various valve products, including the "Bio-Clean Diaphragm Valve," from our local subsidiary, Tianjin Daiya Valve Co., Ltd. [Exhibition Details] ■ Quick-Opening Handle Type: BQL400NB Model: Easy operation with a 90-degree rotation, excellent visibility, and stable shut-off performance! ■ Bio-Clean Diaphragm Valve: A sanitary valve with excellent "air tightness," "cleanability," and "maintainability"! ■ PFA Lined Valve: Exhibiting various PFA lined valves with excellent corrosion and chemical resistance! ■ CNT (Carbon Nanotube) Added Anti-Static Diaphragm: Leakage prevention product against electrostatic breakdown! We warmly invite you to visit our booth when you attend the exhibition. We look forward to seeing you!

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NDV FAQ

A new category "Valve FAQ" has been established on the NDV special site!

  • Product news

We have published "General Information on NDV Products" and "Diaphragm Valve Edition" in the Valve FAQ section. You can access it from the link below, so please take a look. *For more details, please refer to the PDF document or feel free to contact us.

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Companynews list (102)

Company information

Nippon

Nippon Daiya Valve Co., Ltd.

Machine elements and parts

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Since its founding in 1955, our company has made customer satisfaction (CS) — that is, "providing products that satisfy our customers" — the fundamental management policy. For over 60 years, we have supplied products such as diaphragm valves, ball valves, and butterfly valves tailored to our customers' needs. By providing these products across a wide range of industrial sectors, including pharmaceuticals, chemicals, semiconductors, and steel manufacturing, as well as in public sectors such as nuclear and thermal power generation, water supply and sewage, and waste treatment facilities, we take pride in contributing to the development of economic activities and the creation and maintenance of an environmentally sustainable society. Moving forward, we will continue to respond to our customers' requests and strive to be of service to society, with all employees making every effort. 【Main Areas of Service】 We provide a wide range of valves across various sectors, from industries such as pharmaceuticals, chemicals, semiconductors, and steel manufacturing to public sectors like nuclear and thermal power generation, water supply and sewage, and waste treatment facilities. ■ ISO 9001 and 14001 Certification Obtained *For more details, please download our company brochure or contact us.

Product/Service List (51)

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