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  1. Home
  2. Machine elements and parts
  3. Nippon Daiya Valve Co., Ltd.
Machine elements and parts
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Nippon Daiya Valve Co., Ltd.

EstablishmentJuly 23, 1955
capital9600Ten thousand
number of employees245
addressTokyo/Shinagawa/1-3-22 Hiro-machi
phone03-3492-3034
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last updated:Dec 02, 2025
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  • Products/Services(52)
  • catalog(43)
  • news(104)

Nippon Daiya Valve Co., Ltd. Company Overview

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.

Recommended information

Exhibiting at the Interphex trade show! New diaphragm valve for pharmaceuticals.

Exhibiting at the Interphex trade show! New diaphragm valve for pharmaceuticals.

Enhanced leakage prevention performance with the adoption of a new seal structure! Diaphragm valves for pharmaceuticals, bioprocesses, cosmetics, food, and semiconductor manufacturing equipment!

■NDV New Product "EX-Bioclean Diaphragm Valve" Series This product is a diaphragm valve with a new sealing structure that has evolved from the conventional "Bioclean Diaphragm Valve" series designed for pharmaceutical and related equipment. While maximizing the features of diaphragm valves that have a "structure that does not contaminate fluids" and "excellent cleanability," we have revamped the sealing structure to meet user needs and further enhance product performance. 【Features】 ● Improved airtightness! ● Enhanced maintainability! ● Ensured compatibility! ● Safety performance and quality! ■ This product will be exhibited at the "28th INTERPHEX JAPAN" held at Makuhari Messe from May 20 to 22. 【Overview of the 28th INTERPHEX JAPAN】 Date: May 20 (Wed) - May 22 (Fri), 2026, 10:00 - 17:00 Location: Makuhari Messe (Hall 5) Booth Number: Raw Material Processing Zone 27-16 *For more details, please refer to the catalog or feel free to contact us.

Products/Services (52)

Exhibiting at the Interphex trade show! New diaphragm valve for pharmaceuticals. product image
Exhibiting at the Interphex trade show! New diaphragm valve for pharmaceuticals.
NDV 2-stage open/close air-operated drive unit 2-stage open/close ball valve product image
NDV 2-stage open/close air-operated drive unit 2-stage open/close ball 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 the 28th Interphex Japan (General Invitation)

Invitation to the 28th Interphex Japan (General Invitation)

OTHER
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Invitation to the 28th Interphex Japan (General Invitation)

Invitation to the 28th Interphex Japan (General Invitation)

OTHER
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EX-Bio Clean Diaphragm Valve

EX-Bio Clean Diaphragm Valve

PRODUCT
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NDV Glass Lining Products Diaphragm Valve Leaflet

NDV Glass Lining Products Diaphragm Valve Leaflet

PRODUCT
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news(104)

展示会のお知らせ (イプロス).jpg

Free invitation with pre-registration! Announcement of participation in the 28th Interphex Japan Exhibition.

  • NEW
  • SEMINAR_EVENT

Our company will be exhibiting at the 28th Interphex Japan, which will be held at Makuhari Messe from May 20 (Wednesday) to May 22 (Friday). This exhibition is one of the world's leading events where specialized technologies from the pharmaceutical and cosmetics industries are showcased. We will be presenting a variety of valve products that are optimal for manufacturing processes in pharmaceuticals and biotechnology, including our "Bio-Clean Diaphragm Valve" series. [Highlights of Our Exhibit] ◆ New Product: "EX-Bio Clean Diaphragm Valve" A next-generation diaphragm valve utilizing a new sealing structure! Officially launching this summer! ◆ First-ever Mini Session at this Exhibition! We will hold a mini session on the "EX-Bio Valve" that can only be heard at this exhibition. ◆ Renewed Products in Response to Many Requests! The "Glass-Lined Diaphragm Valve" has been renewed! ◆ Additionally, we will showcase various sanitary valve products that are ideal for manufacturing equipment in pharmaceuticals, cosmetics, food, and semiconductors! We sincerely look forward to your visit! For more details, please refer to the related document "Invitation to the 28th Interphex Japan (General Invitation)" below or feel free to contact us.

May 11, 2026

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カタログ改訂しました! (6).png

Notice of catalog revision for "Ball Valve," "Butterfly Valve," and "Sanitary-related Valves" (FAQ collection also introduced!!)

  • CATALOG

We have started distributing the revised version of the catalog listed below. We hope it will be useful for selecting valves in your daily operations. We would be grateful if you could gain a deeper understanding of our products. ◇ Ball Valves: In addition to the standard fire-safe type, you can choose from a wide range of options tailored to your needs, including multi-port valves and V-port valves. ■ Japanese text "No.B302-13" ◇ Butterfly Valves: We offer butterfly valves that excel in sealing performance and flow control. ■ Japanese text "No.C302-05" ◇ Sanitary Related Valves: We provide sanitary specification valves that are ideal for manufacturing equipment in pharmaceuticals, food, and semiconductors. ■ English text "No.DE117-04" *If you would like to receive a catalog, you can apply through the inquiry page. Please feel free to contact us if you have any questions or concerns. Additionally, we also have a FAQ section available, so please check it out in the related catalogs below.

Apr 07, 2026

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New Year's greetings

  • OTHER

I would like to extend my respectful New Year's greetings. I sincerely thank you for your exceptional support during the past year. I kindly ask for your continued patronage this year as well. We have resumed normal operations since January 5th. We will respond to inquiries received during the holiday period in due course. Thank you for your patience and understanding.

Jan 05, 2026

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Detailed information

Company name Nippon Daiya Valve Co., Ltd.
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
Nippon Daiya Valve Co., Ltd. Building Image
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Please note that the English text on this page is automatically translated and may contain inaccuracies.