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  3. 日本ダイヤバルブ 本社 業務・開発部
  4. A new category "Valve FAQ" has been established on the NDV special site!
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  • Feb 21, 2022
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Feb 21, 2022

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

日本ダイヤバルブ 日本ダイヤバルブ 本社 業務・開発部
We have published information on "General NDV Products" and "Diaphragm Valves" in the Valve FAQ section. You can access it via 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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Frequently Asked Questions about Valves [General NDV Products]

General NDV Products Edition! We will answer frequently asked questions about valves.

This document summarizes frequently asked questions about NDV products in relation to valves and provides answers in a Q&A format. If you have any questions or requests regarding our products, please feel free to contact us. 【Contents (Q&A)】 ■ What types of valves does NDV handle? ■ Are there any restrictions on the installation position of the valve piping? ■ Why can multiple actuators be selected for a single nominal diameter? ■ What is the NAMUR standard? *For more details, please refer to the PDF document or feel free to contact us.

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Valve FAQ Frequently Asked Questions [Diaphragm Valve Edition]

Diaphragm Valve Edition! We will answer frequently asked questions about valves!

This document summarizes frequently asked questions about diaphragm valves and provides answers in a Q&A format. If you have any questions or requests regarding our products other than diaphragm valves, please feel free to contact us. 【Contents (Q&A)】 ■ What is the history of diaphragm valves? ■ Please explain the structure of diaphragm valves. ■ What are the characteristics of diaphragm valves? ■ How should I select the combination of the body and diaphragm? ■ What is the durability and service life of the diaphragm? *For more details, please refer to the PDF document or feel free to contact us.

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Diaphragm valve (Type 400 / Type 500)

A structure that opens and closes the flow path with a flexible diaphragm! We will introduce two types of valve designs.

The product consists of three units: the drive part, diaphragm, and main body. It controls the fluid by pressing the diaphragm against the sealing part of the inner surface of the main body and then releasing it. The wear-type "Model 400" maintains airtightness by ensuring that the diaphragm and the main body's dam are in close contact without gaps, demonstrating high valve seat sealing performance. The materials for the main body and diaphragm are diverse, allowing compatibility with a wide range of fluids. Additionally, the straight-type "Model 500" features a flow path that is nearly linear, resulting in a structure with minimal pressure loss and liquid pooling, making it suitable for fluids containing viscous fluids, fibrous fluids, slurries, sludge, and suspended solids. 【Features】 ■ No leakage to the outside and no contamination of the fluid from outside air ■ Zero valve seat leakage ■ Simple main body shape suitable for lining processing ■ Minimizes liquid pooling and possesses self-cleaning properties ■ Adopts a three-unit system, making disassembly and assembly easy *For more details, please refer to the PDF materials or feel free to contact us. (The English and Chinese versions of the catalog can be downloaded from the catalog page of the special site below.)

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NDV Wear Type Diaphragm Valve: Type 400

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 a flow path using a flexible diaphragm (membrane) made of materials such as rubber. The "Wear Type Diaphragm Valve: 400 Series" 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 compatibility with a broad range of fluids. ▼Applicable Fields: Chemicals, Environmental & Water Treatment, Steel, Shipbuilding, 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.)

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Straight type diaphragm valve: 500 type

The flow path is close to straight, with a structure that has minimal pressure loss and liquid accumulation! Ideal for fluids containing sludge, suspended solids, and more.

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 "Straight Type Diaphragm Valve: 500 Series" has a flow path that is close to linear (straight), resulting in a structure with minimal pressure loss and liquid accumulation. It is suitable for fluids containing viscous fluids, fibrous fluids, slurries, sludge, and suspended solids. ▼ Application Fields: Water treatment plants, final treatment plants, etc. *For more details, please refer to the PDF materials 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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NDV Valve FAQ Frequently Asked Questions [General NDV Products]

NDV Valve FAQ Frequently Asked Questions [General NDV Products]

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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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We will be open as usual during the Obon period.

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Thank you very much for always using Majesta Fragrance. Our company will be open as usual during the Obon period. Please feel free to contact us for inquiries about scent arrangements or the introduction of commercial aroma diffusers.

Aug 13, 2025

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Industry Commentary | Advantages of Carbon Steel Solar Mounting Structures

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High Strength, Low Cost: The Economic Advantages of Carbon Steel Frames Carbon steel is inherently strong, and this high structural strength ensures stable wind resistance while allowing for a simple support structure, reducing the need for extra components. This also lowers the wear rate during transportation, enabling further savings in material costs and installation expenses. Transportation and Construction: Streamlining the Entire Project The advantages of carbon steel frames are also evident in the transportation and construction phases. Standardized designs simplify on-site installation and shorten construction periods. For example, carbon steel frames can be packaged using a combination of wooden sticks and iron ties, improving unloading efficiency and increasing transport volume. This reduces construction time and labor costs, distributing the overall burden of the project across all stages. Technological Innovation: Breakthroughs in Corrosion Resistance With the evolution of material technology, the corrosion treatment of carbon steel frames has also significantly advanced. Grace Solar has adapted to the technological trends in process development, and all current carbon steel frames utilize AlMgZn coating. At the same time, to meet the special requirements of each project, our company offers custom options for hot-dip galvanizing.

Aug 13, 2025

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Exhibition Report | Grace Solar's Solar Mounts That Withstand Brazil's Harsh Climate Are Here

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#Intersolar South America - We invite you to attend the most influential solar energy event in Latin America. You will be able to see innovative solar mounting solutions designed for the Latin American market. At booth R2.82, Grace Solar will showcase how it is evolving regional solar projects: - Ground-mounted solar mounting systems suitable for Brazil's tropical storms and humid environments - Flexible roof installation systems that can accommodate diverse architectural needs Let's build the future of solar power together! Venue: Expo Center Norte, São Paulo, Brazil, Booth R2.82 Date: August 26-28, 2025

Aug 12, 2025

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Fragrance production at cabaret clubs in Tokyo.

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We have introduced the commercial aroma diffuser "Majesta Fragrance" to a cabaret club in Tokyo. The selected scent is "Royale," which offers a sense of calm and elegance. It spreads naturally throughout the floor, creating a high-quality space that satisfies the five senses. Majesta Fragrance is available for a free trial installation exclusively in the Kanto area. If you are interested in enhancing your store's scent experience, please feel free to contact us.

Aug 12, 2025

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Develop logical thinking and problem-finding skills that can be applied to practical work in a short time. Start with a free trial!

[Announcement of Trial Version Catalog Release] "Conceptual Skills Course" Useful for Promotion and Development

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We have released a catalog for a trial version of a conceptual skills course designed to efficiently develop logical thinking and problem-solving skills in a short period. The course is structured in three levels, from basic to practical and applied, supporting skill enhancement directly related to work through video viewing, exercises, and detailed feedback. There is also a free trial version available, lasting about 10 to 20 minutes, allowing you to easily check the course content and approach. It is ideal for promotion and advancement exam preparation, as well as for developing the next generation of leaders, with a proven track record in many companies. For detailed materials or to apply for the trial version, please use the link below. Feel free to take advantage of it!

Aug 12, 2025

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  • イプロスがリアル展示会を主催します! AI/DX 営業・マーケティング展 出展社募集中 リード数・商談数が止まらない!新しいリアル展示会を提供 会期 2026年3月24日(火)~25日(水) 会場 東京ビッグサイト東4ホール 出展概要資料を進呈!
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