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  1. Home
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  3. 日本ダイヤバルブ 本社 業務・開発部
Machine elements and parts
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日本ダイヤバルブ 本社 業務・開発部

EstablishmentJuly 23, 1955
capital9600Ten thousand
number of employees245
addressTokyo/Shinagawa/1-3-22 Hiro-machi
phone03-3492-3034
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last updated:Mar 17, 2025
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  • Company information
  • Products/Services(51)
  • catalog(43)
  • news(98)

日本ダイヤバルブ Company Profile

Japan Diaphragm Valve offers high-quality diaphragm valves, ball valves, and butterfly valves.

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.

Business Activities

Japan Diaphragm Valve manufactures and sells high-performance, safe, and environmentally friendly products that meet diverse needs, including diaphragm valves, ball valves, and butterfly valves, in addition to its main product, the diaphragm valve. ■ Diaphragm Valve This is our representative product, excelling in "sealing performance," "maintainability," and "corrosion and chemical resistance." It can be configured using a wide range of materials selected according to the composition of the fluid and usage conditions, making it suitable for a broad range of applications and offering excellent cost performance. ■ Ball Valve We offer ball valves suitable for a wide range of fields. In addition to the standard fire-safe type, you can choose from a rich lineup tailored to various applications, including multi-way valves and V-port valves. ■ Butterfly Valve We provide butterfly valves that excel in sealing and flow control. In addition to metal materials such as cast iron and stainless steel, we also offer products with PFA lining for excellent corrosion resistance, which have received positive feedback. ■ Other Valves Please feel free to contact us.

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Products/Services (51)

Exhibition at INCHEM: PFA-lined butterfly valve product image
Exhibition at INCHEM: PFA-lined butterfly valve
Exhibition at the Inchem Show: EX-Bio-Clean Diaphragm Valve product image
Exhibition at the Inchem Show: EX-Bio-Clean Diaphragm Valve
[New Product] EX-Bio Clean Diaphragm Valve product image
[New Product] EX-Bio Clean Diaphragm Valve
Rapid opening and closing handle - Bio-clean diaphragm valve product image
Rapid opening and closing handle - Bio-clean diaphragm valve

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catalog(43)

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Invitation to INCHEM TOKYO 2025 (General Invitation)

Invitation to INCHEM TOKYO 2025 (General Invitation)

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EX-Bio Clean Diaphragm Valve

EX-Bio Clean Diaphragm Valve

PRODUCT
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Invitation to the 27th Interphex Japan (General Invitation)

Invitation to the 27th Interphex Japan (General Invitation)

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NDV Glass Lining Products Diaphragm Valve Leaflet

NDV Glass Lining Products Diaphragm Valve Leaflet

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news(98)

ブース風景.png

Thank you for visiting the "INCHEM TOKYO 2025 Exhibition" from September 17 (Wednesday) to September 19 (Friday) [Nihon Diavalve].

  • NEW
  • OTHER

We exhibited at the "INCHEM TOKYO 2025 Exhibition" held at Tokyo Big Sight from September 17 (Wednesday) to September 19 (Friday). Thank you very much for visiting our booth despite your busy schedule. 【Details of Exhibits】 ■ New Product: EX-Bio Clean Diaphragm Valve ■ Renewal: Glass Lined Diaphragm Valve ■ Ball Valve Series Suitable for a Wide Range of Fields ■ Various Lined Bodies with Excellent Corrosion and Chemical Resistance ■ PFA Lined Butterfly Valve ■ Sanitary Butterfly Valve for Powder and Granule Discharge *For more details, please download the catalog or contact us. (The catalog can be downloaded from the catalog page of the special website below.) *If there were any requests or questions that we could not address at the venue, please feel free to contact us.

Sep 22, 2025

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Notice of Shipping Suspension Period Due to Interim Financial Statement Inventory Count

  • COMPANY

Thank you very much for your continued support. We would like to inform you that our company will suspend product shipping operations for inventory purposes due to the interim financial closing on the following dates. We apologize for any inconvenience this may cause and appreciate your understanding. Shipping suspension period: Tuesday, September 30, 2025.

Sep 08, 2025

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Free invitation with pre-registration! Announcement of participation in the INCHEM TOKYO 2025 exhibition.

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  • SEMINAR_EVENT

Our company will be exhibiting at "INCHEM TOKYO 2025," which will be held at Tokyo Big Sight from September 17 (Wednesday) to September 19 (Friday). This exhibition is a specialized event for the chemical and process industries, and we will showcase a variety of valve products suitable for a wide range of industrial fields, including chemicals, environmental and water treatment, and pharmaceuticals, focusing on diaphragm valves, ball valves, and butterfly valves. 【Highlights of Our Exhibition】 ◆ New product "EX-Bio Clean Diaphragm Valve" launching in July! A next-generation diaphragm valve utilizing a new sealing structure! We have further enhanced the leakage prevention performance! ◆ Renewed products responding to many requests! The "Glass-Lined Diaphragm Valve" has been renewed! ◆ In addition, we will display various valve products suitable for a wide range of industrial fields such as chemicals, environment, water treatment, and pharmaceuticals! ◆ Our company representatives will provide explanations and proposals using actual samples! We sincerely look forward to your visit! For more details, please refer to the related document "Invitation to INCHEM TOKYO 2025 (General Invitation)" below or feel free to contact us.

Aug 21, 2025

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Detailed information

Company name 日本ダイヤバルブ 本社 業務・開発部
number of employees245
Contact addresspostalcode 140-0005 Tokyo/ Shinagawa/ 1-3-22 Hiro-machiView on map TEL:03-3492-3034 FAX:03-3490-7950
Business LocationsClick here for the list
Industry Machine elements and parts
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