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  1. Home
  2. Machine elements and parts
  3. Nippon Daiya Valve Co., Ltd.
  4. Notice of participation in "VIETWATER 2025" from Wednesday, October 22, 2025, to Friday, October 24, 2025. {Case studies are also being introduced!!}
SEMINAR_EVENT
  • Sep 12, 2025
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Sep 12, 2025

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

Nippon Daiya Valve Co., Ltd. Nippon Daiya Valve Co., Ltd.
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.
VIETWATER 2024
VIETWATER 2024
Japan Diavalve Corporation
Japan Diavalve Corporation
Date and time Wednesday, Oct 22, 2025 ~ Friday, Oct 24, 2025
Capital Venue: Saigon Exhibition and Convention Center (SECC) Booth Location: Hall A Booth Number: B16 *For details about the exhibition content, please visit our website's "Exhibition Participation Announcement" or the "Official Exhibition Website."
Entry fee Free Entry method: Pre-registration from the official website.
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Related product

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NDV Wear Type Diaphragm Valve: 400 Type

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.)

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Straight type diaphragm valve: 500 type

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

A diaphragm valve is a type of valve that has a structure that opens and closes the flow path using a flexible diaphragm (membrane) made of materials such as rubber. The "Straight Type Diaphragm Valve: 500 Series" features a flow path that is nearly 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 facilities, 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 "Lining Diaphragm Valve" *Free examples of applications and achievements available!

Introduction of lining products that prevent deterioration from corrosion and chemicals!

Introducing the "Lining Type Diaphragm Valve" with excellent resistance to corrosion and chemicals. It is utilized in a wide range of fields such as chemicals, environmental and water treatment, pharmaceuticals, and semiconductors. It can be applied to countermeasure against corrosive fluids, gap corrosion, and metal ion elution. 【Product Lineup (Example)】 "Model 430": Hard natural rubber lining on a base material of FC200 or FCD-S "Model 459": PFA lining on a base material of FCD-S or SCS13 "Model 460": ETFE lining on a base material of FCD-S "Model 450": Polyethylene lining on a base material of FC200 "Model 480": Porcelain lining on a base material of FCD-S *Sanitary specification diaphragm valves are also available. *For more details, please refer to the catalog or feel free to contact us.

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Introduction to initiatives for the environment

Aiming to create environmentally friendly valves... "The entire company is united in promoting the continuous reduction of environmental impact!" "ISO 14001 certification obtained!"

Japan Diavalve Co., Ltd. aims to be a sustainable company that balances environmental activities and economic activities amid the worsening global environmental issues. Recognizing the commitment to environmental conservation as one of the important pillars of its business activities, the company obtained ISO 14001 certification in 2008 and is working together as a whole company on environmental activities. *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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[Information] Applications and Examples of Diaphragm Valves (For Reference)

We have compiled a table that clearly summarizes the applications and examples of diaphragm valves!

This document includes applications and examples of diaphragm valves. We present reference examples of valve specifications in an easy-to-understand table categorized by application and equipment! 【Published Applications】 ■ Water treatment facilities ■ Chemicals ■ Pharmaceuticals ■ Food ■ Electrical materials & semiconductors ■ Steel & non-ferrous metals ■ Power generation *For more details, please refer to the PDF document or feel free to contact us.

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Related catalog(5)

NDV "Product Information" Catalog

NDV "Product Information" Catalog

CATALOG
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[Latest Version] NDV "Diaphragm Valve" Comprehensive Catalog

[Latest Version] NDV "Diaphragm Valve" Comprehensive Catalog

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NDV "Ball Valve" Comprehensive Catalog

NDV "Ball Valve" Comprehensive Catalog

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[Information] Applications and Examples of NDV Diaphragm Valves (For Reference)

[Information] Applications and Examples of NDV Diaphragm Valves (For Reference)

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NDV [Introduction to Environmental Initiatives]

NDV [Introduction to Environmental Initiatives]

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[Seminar] Policies and Latest Trends in Decarbonization and Resource Circulation in the Construction Sector

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[Lecture Topics] 1. Trends in Policies for Decarbonization of Housing and Buildings Tetsuya Hirayama, Deputy Director, Housing Bureau, Ministry of Land, Infrastructure, Transport and Tourism (in charge of architectural planning) 2. Construction Circular Economy - Expanding Horizontal Recycling for Achieving Sustainable Construction Takahiro Moritomi, Analyst, Social Infrastructure Team, Next Generation Infrastructure and Services Office, Industry Research Department, Mizuho Bank, Ltd. 3. Beyond "Scrap and Build" Aiming for the Realization of "Circular Design Build®" Shoichi Fukui, Senior Chief Expert, Sustainability Promotion Department, Management Planning Office, Takenaka Corporation

Jun 25, 2026

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[Seminar] Practical Response to the Obligation of Measures Against Kasuhara and Job Hunting Sexual Harassment

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[Instructor] Attorney Kurato Suzuki, Irokawa Law Office [Key Lecture Content] Due to the amendments to the Comprehensive Promotion Law for Labor Policies, starting from October 1, 2026, employers will be required to take necessary measures in employment management regarding customer harassment (Kasu Hara) and sexual harassment against job seekers (Job Hunting Sexual Harassment). In line with this, companies will need to prepare for practical implementation before the enforcement date, based on the guidelines published by the Ministry of Health, Labour and Welfare. This includes developing internal regulations, establishing consultation and response systems, raising awareness within the company, and determining judgment and response methods on-site. This seminar will organize the setting of job hunting rules related to job hunting sexual harassment, internal awareness, and key points for regulatory development. It will also explain the distinction between legitimate complaints and customer harassment, judgment, documentation, and response on-site, the establishment of a company-wide system, regulatory development considering dispute risks, and points that are easily overlooked. The Human Resources, Labor, Legal, and Compliance departments will systematically organize the response matters that need to be confirmed in preparation for the enforcement on October 1, 2026, from the perspectives of guideline compliance and on-site operations. [Lecture Items] 1. Job Hunting Sexual Harassment 2. Customer Harassment 3. Q&A

Jun 25, 2026

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[Seminar] INPEX's Challenge: Technology Development and Business Outlook for CO2 Methanation

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[Speaker] Mr. Itsuki Wakayama, Project General Manager, Technology Promotion Unit, Low Carbon Solutions Division, INPEX Corporation [Key Lecture Content] The greatest advantage of synthetic methane production through CO2 methanation technology is that it enables decarbonization without significant additions or modifications to all existing natural gas and city gas infrastructure. At INPEX, after two NEDO commissioned projects, we have been conducting the development of practical application technology with a capacity of 400 Nm3-CO2/h, one of the largest in the world, as a subsidized project by NEDO since the fiscal year 2021. By the fiscal year 2025, we aim to achieve the injection of synthetic methane produced during the demonstration operation of the test facility. This presentation will provide detailed information on the results of the NEDO project for the fiscal year 2025, including the current status of the latest test facilities. [Presentation Items] 1. INPEX's efforts towards net zero by 2050 2. Policy trends related to CO2 methanation 3. Challenges of CO2 methanation 4. Results of the NEDO practical application technology development project with a capacity of 400 Nm3-CO2/h for the fiscal year 2025 5. Future commercialization prospects and challenges 6. Q&A / Business card exchange

Jun 25, 2026

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[Seminar] Generative AI Planning Techniques - 90% of AI Utilization is About "Questions"

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[Speaker] Mr. Satoru Shimizu, President and CEO of Okunote Inc. [Key Lecture Content] Generative AI is not a "magic wand," but a "mirror" that reflects the questions of the user. In this lecture, based on my book "The 'Super' Planning Techniques Practiced by Competition Disruptors: Seven Creative Steps to Lead Winning Strategies with the 'Art of Questioning'," I will explain how to overcome the challenges of proposals being rejected, not moving forward within the company, and not being executed on-site through interactions with AI. I will introduce the entire process of planning, linking it with AI utilization, from question design to hypothesis destruction, structuring materials from the decision-maker's perspective, forming internal consensus, managing execution, and turning reflections into assets. In the latter part of the workshop (exclusive to on-site participants), you will actually formulate questions and refine your dialogue with AI, taking home usable "art of questioning" techniques for tomorrow. [Lecture Items] 1. Orientation: AI is a "mirror," not a "magic wand." 2. Enhancing the precision of planning through "question design" and "hypothesis destruction." 3. Structuring materials from the decision-maker's perspective to create "acceptable" proposals. 4. Forming consensus that transcends internal barriers. 5. Mechanisms that prevent execution from stopping and turning experiences into assets through reflection. 6. Habitualizing AI as a "partner" and the roles humans will take on in the AI era.

Jun 25, 2026

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Japan IT Week [Autumn] AI Infrastructure and Data Center EXPO

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【Exhibition Overview】 A collection of products related to data centers, which are at the core of AI infrastructure, gathered in one place.

Jun 25, 2026

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