In response to customers’ requests, our catalog includes information from basic knowledge to technical data about our valves to facilitate valve selection. If you have any requests regarding our products and catalogs, please feel free to contact us. ■Main Contents - Standard specifications of products (Structure and features, valve specifications, main dimensions, actuator selection table, etc.) - Introduction of related products - Important notes for handling *For more details, please download the catalog or contact us.

Dear Sir/Madam, I would like to express my sincere congratulations on the continued prosperity of your company. I also wish to extend my heartfelt gratitude for your exceptional support of our products. In light of the challenging market environment, our company has been making continuous efforts to streamline operations and reduce costs in order to maintain our selling prices. However, as you are all aware, in addition to the rising costs of various materials, there has been an increase in indirect costs such as logistics expenses, making it increasingly difficult to absorb these costs through improvements in efficiency and other corporate efforts. Therefore, it is with great reluctance that we must request a revision of the selling prices for diaphragm valves, ball valves, and some related products. We kindly ask for your understanding regarding these circumstances. Sincerely, *Implementation date: From August 2021. *For details on the revised prices, please contact our sales department.

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.

We would like to introduce our "2 products" of the 3-way ball valve! The 3-way ball valve (E300 type) is used for switching, diverting, and mixing flow in three directions. There are two main types of flow structures for the 3-way valve: "L-port" and "T-port." For more details, please refer to the links in the "Related Products" section below or feel free to contact us. 【Lineup】 ■E300NB-L2 type: 3-way ball valve L-port with 2 face seats ■E300NB-T4/L4 type: 3-way ball valve T/L-port with 4 face seats

I would like to express my heartfelt sympathy to all those affected by the Noto Peninsula earthquake in Reiwa Year 6. I pray for everyone's safety and for the swift recovery of the disaster-stricken areas. I would like to respectfully extend my 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 from January 5th. We will respond to inquiries received during the closure in due course. I appreciate your patience and understanding.

Thank you very much for your continued support. We sincerely apologize for the inconvenience, but our company will be closed for the year-end and New Year holidays during the following period. Closure period: December 30, 2023 (Saturday) to January 4, 2024 (Thursday) Inquiries made through this website or email will be addressed sequentially starting from January 5 (Friday) after the closure period. We apologize for any inconvenience this may cause and appreciate your understanding.

We have revised the "Ball Valve" catalog and have started distributing "No. B302-11." For those who may not be very familiar with ball valves, we have made an effort to present the necessary product information in a clearer, more accessible, and more visually appealing format. We hope this will be helpful in selecting ball valves for your daily operations. We would be grateful if you could gain a better understanding of our products. *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 offer an English catalog and a FAQ collection, which you can view in the related catalogs below.

Nihon Diaball Valve Co., Ltd. will be exhibiting at "VIETWATER 2023," which will be held in Ho Chi Minh City, Vietnam, from October 11 (Wednesday) to October 13 (Friday), 2023. This exhibition is the largest water treatment-related exhibition in Vietnam, and we will be showcasing various valves suitable for water treatment equipment, including our representative "diaphragm valves." [Exhibition Details] ■ 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.

Thank you very much for your continued support and patronage. We sincerely apologize for the inconvenience, but our company will be closed all day on October 2, 2023 (Monday) in observance of our founding anniversary. We appreciate your understanding and cooperation in this matter.

We exhibited at "INCHEM TOKYO 2023," which was held at Tokyo Big Sight from September 20 (Wednesday) to 22 (Friday). Thank you very much for visiting our booth despite your busy schedule. 【Details of Exhibits】 ■ New Bio-Clean 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 *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 were unable to address at the venue, please feel free to contact us.

Thank you very much for your continued support. We would like to inform you that our product shipping operations will be suspended on the following dates due to inventory related to our mid-term financial closing. We apologize for any inconvenience this may cause and appreciate your understanding. Shipping suspension period: September 29, 2023 (Friday)

Nihon Diaball Valve Co., Ltd. will be exhibiting at "INCHEM TOKYO 2023," which will be held at Tokyo Big Sight from September 20 (Wednesday) to 22 (Friday) this year. This exhibition is Japan's only specialized exhibition for chemical and process industry plants, and our company will showcase various valve products suitable for a wide range of industrial fields, focusing on diaphragm valves, ball valves, and butterfly valves, including applications in chemicals, environmental and water treatment, and pharmaceuticals. [Highlights of the Exhibition] - We will reference display the "New Bio-Clean Diaphragm Valve" featuring a new sealing structure. - Live demonstration of cut samples of V-port valves! - Our company representatives will provide explanations and proposals using actual samples. [Details of Exhibits] - New Bio-Clean Diaphragm Valve - Ball valve series suitable for a wide range of fields - Various lined main bodies with excellent corrosion and chemical resistance - PFA-lined butterfly valves We look forward to your visit!

We have published the product page for the 2-way ball valve "F100NB type" <Fire Safe Type>. The Fire Safe Type is a ball valve designed to prevent significant fluid leakage in the event that sealing parts such as sheets or gaskets are burned away due to a fire. 【Main Features】 ■ Available on the product page below! *For more details, please refer to the catalog or feel free to contact us.

Our company will be closed for a company-wide holiday during the period below. We apologize for any inconvenience this may cause and appreciate your understanding. Summer holiday period: August 11 (Friday) to August 16 (Wednesday), 2023 Inquiries received during this holiday period will be addressed sequentially starting from August 17 (Thursday) after the holiday.

Nihon Diaball Valve Co., Ltd. will be exhibiting at the "INDO WATER 2023 Expo & Forum," which will be held in Indonesia from August 30 (Wednesday) to September 1 (Friday). This exhibition is the 17th edition and is the largest exhibition in Indonesia showcasing specialized technologies related to water supply, sewage, and recycling. We will present various valves suitable for water treatment equipment, including our representative "diaphragm valves." [Exhibition Details] ■ Diaphragm Valves - We will showcase 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 present various valve seats that can be used under special conditions, such as with abrasive fluids. We sincerely look forward to your visit.

We exhibited at the "25th INTERPHEX JAPAN," held at Tokyo Big Sight from July 5 (Wednesday) to July 7 (Friday). Thank you very much for visiting our booth despite your busy schedule. 【Details of Our Exhibits】 ■【New】Bio-Clean Diaphragm Valve ■Products with excellent dead space measures ■Corrosion-resistant valves with sanitary specifications ■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.

Nihon Diaball Valve Co., Ltd. will be exhibiting at the "25th Interphex Japan," which will be held at Tokyo Big Sight from July 5 (Wednesday) to July 7 (Friday) this year. This exhibition is one of the world's leading trade shows where specialized technologies from the pharmaceutical and cosmetics industries are showcased, and our company will present various valves optimal for manufacturing processes in pharmaceuticals, biotechnology, and more, including our "Bio-Clean Diaphragm Valve" series. 【Highlights of Our Exhibit】 ■ We will showcase a reference display of the "New Bio-Clean Diaphragm Valve" featuring a new sealing structure. ■ We will exhibit sanitary valves that are ideal for manufacturing equipment in pharmaceuticals, cosmetics, food, and semiconductors. ■ Our staff will provide explanations and proposals using actual samples of various products. 【Details of Our Exhibit】 ■ New Bio-Clean Diaphragm Valve ■ Products with excellent dead space management ■ Corrosion-resistant sanitary valves ■ Sanitary butterfly valve for powder and granule discharge We look forward to your visit.

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!

We would like to express our sincere gratitude for your continued support. We would like to inform you that our product shipping operations will be suspended on the following dates due to inventory taking related to our financial closing. We apologize for any inconvenience this may cause and appreciate your understanding. Shipping suspension period: Friday, March 31, 2023.

We are pleased to announce that our article has been published in the March 2023 special issue of "Piping Technology" (published by Nippon Kogyo Shuppan Co., Ltd.) featuring the theme "Corrosion, Anti-corrosion, and Corrosion Resistance." Titled "Diaphragm Valves Ideal for Corrosion-resistant Applications," the article provides detailed information on the corrosion resistance, applications, and manufacturing methods of various lining materials and diaphragm materials. We encourage you to read it. *For more details about the specialized magazine "Piping Technology" for plant engineers, please refer to the related link. ◆Lined Diaphragm Valves◆ 【Product Lineup (Example)】 "Type 430 Body": Hard natural rubber lining on a base material of FC200 or FCD-S "Type 459 Body": PFA lining on a base material of FCD-S or SCS13 "Type 460 Body": ETFE lining on a base material of FCD-S "Type 450 Body": Polyethylene lining on a base material of FC200 "Type 480 Body": Porcelain lining on a base material of FCD-S *For more details, please refer to the catalog or feel free to contact us.

We would like to introduce our "2 products" of butterfly valves! The stainless steel high-performance butterfly valve "KM200" is designed to accommodate a wide range of fluids with its reinforced PTFE seat. The drive shaft of the disc is double-eccentric, ensuring that the disc and seat remain non-contact until just before fully closed, resulting in minimal wear on the seat and a long lifespan. The cast iron butterfly valve "C201R" features a concentric contact surface on the seat, creating a self-sealing mechanism that generates contact pressure on the sealing surface of the disc due to fluid pressure, allowing for effective sealing from vacuum to high pressure. For more details, please refer to the related products and catalog, or feel free to contact us. 【Product Lineup】 ■ KM200: Stainless steel high-performance butterfly valve ■ C201R: Cast iron butterfly valve *For more details, please refer to the related products and catalog, or feel free to contact us.

A new product that is lightweight and compact, equipped with a 360-degree easy-to-read indicator. We are pleased to introduce our new product from Japan Diaball Valve. 【Features】 ■ 360-degree easy-to-read indicator Adopts a dome-shaped transparent cover for excellent visibility. You can check the valve's open and closed status from various angles. ■ High torque with a compact body A lightweight and compact drive unit made from aluminum alloy and engineering plastic. ■ Drip-proof performance (equivalent to IP65) With drip-proof performance that prevents rainwater intrusion and condensation, it is safe and secure for outdoor use. *For more details, please download the leaflet and catalog or contact us.

We have published "Frequently Asked Questions about Valves [Butterfly Valve Edition]" in the category "Valve FAQ <Frequently Asked Questions>" on the NDV special site. 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.

I would like to extend my heartfelt congratulations for the New Year. 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 regular business operations from January 5th. We will respond to inquiries received during the closure in due course. Thank you for your patience and understanding.

Thank you very much for your continued support. We sincerely apologize for the inconvenience, but our company will be closed for the New Year holiday during the following period. Closure period: December 30, 2022 (Friday) to January 4, 2023 (Wednesday) We will respond to inquiries made through this site or via email sequentially starting from January 5 (Thursday) after the holiday period. We apologize for any inconvenience this may cause and appreciate your understanding.

We would like to express our sincere gratitude for your continued support. We would like to inform you that our overseas subsidiary, Tianjin Taiya Valve Co., Ltd., has relocated to the following address as of November 1, 2022. Taking this opportunity, all of our employees are committed to renewing our efforts in our business, and we kindly ask for your continued patronage. ■ New Address Zip Code: 300457 145, 13th Avenue, Development Zone, Tianjin (within the TEDA Comprehensive Conservation Area) TEL: +86-22-5981-3960 FAX: +86-22-5981-3961 (both numbers remain unchanged)

We have revised the comprehensive catalog for "Sanitary-related Valves" and published "D117-07." For more details, please refer to the related catalog. *If you would like to request a catalog, you can apply through the inquiry page. If you have any questions or concerns, please feel free to contact us.

Nihon Diaball Valve Co., Ltd. will be exhibiting at 'VIETWATER 2022', which will be held in Vietnam from November 9 (Wednesday) to November 11 (Friday). (Booth number: Hall B No. A38) This exhibition is the largest in Vietnam showcasing specialized technologies related to water treatment, and we will present various valves optimal for water treatment, including our representative "Diaphragm Valve Series." 【Exhibition Content】 ■ Diaphragm Valves - We will showcase various lined bodies with excellent corrosion and chemical resistance. - We will introduce valves suitable 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 present various valve seats that can be used under special conditions, such as abrasive fluids and high-temperature fluids. We sincerely look forward to your visit.

We have published "Ball Valve FAQ: Frequently Asked Questions" in the category "Valve FAQ" on the NDV special site. 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.

We have revised the "Diaphragm Valve" catalog and have begun distributing "No. D303-11." For those who may not be familiar with diaphragm valves, we have made an effort to present the necessary product information in a clearer, more accessible, and more visually appealing format. We hope this will be helpful in selecting diaphragm valves for your daily operations. We would be grateful if you could gain a deeper understanding of our products. *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 collection of case studies and FAQs available, so please check the related catalogs below.