日本ダイヤバルブ List of Products and Services

This catalog features a variety of diaphragm valves manufactured and sold by Nihon Diaphragm Valve Co., Ltd. A diaphragm valve is a type of valve that uses a flexible diaphragm made of materials such as rubber to open and close the flow path. They are broadly classified into two types: the wear-resistant type with high airtightness and the straight type with low pressure loss and minimal liquid accumulation. The catalog includes a diverse range of products, including manual operation valves, air-operated ON-OFF valves, and electric operation valves. Additionally, technical materials such as dimension and material selection tables are included at the end. [Contents] ■ Manual operation valves ■ Air-operated ON-OFF valves ■ Air-operated flow control valves ■ Electric operation valves ■ Technical materials, 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.)

This catalog is a comprehensive catalog of Daiya Valve Co., Ltd., which mainly manufactures and sells valves. It features a wide range of products that can be used in various industrial fields, including the diaphragm valve "Wear Type Diaphragm Valve," which has an arc-shaped seat (wear) in the center of the body, as well as "Bio-Clean Valves" and "Ball Valves." Please consider using our high-performance, safe, and environmentally friendly products. [Contents] ■ Wear Type Diaphragm Valve ■ Bio-Clean Valve ■ Straight Type Diaphragm Valve ■ Valves for Nuclear Power Plants ■ Rubber-Lined Check Valves, etc. *For more details, please refer to the catalog or feel free to contact us. (We also have a Chinese version available!)

This is a drain discharge valve for sanitary piping with a simple design. By forming grooves in the valve seat area, it allows for continuous drainage. Other than the grooves, the design follows the NDV standard specifications, so not only consumables like diaphragms can be used, but also standard NDV actuators. Connection methods include clamp, welding, and various flanges. The flow path surface can be electropolished. 【Features】 ■ Utilizes bio-clean diaphragm valve technology ■ Ideal for manufacturing equipment in pharmaceuticals, cosmetics, food, and semiconductors ■ Basic structure is a diaphragm valve ■ Even if foreign substances enter the valve seat area, it does not fail immediately, and maintenance is excellent ■ Simple design with a gap (groove) of φ2 or φ3 equivalent at the valve seat area to discharge the drain ■ Applicable nominal diameter: Customizable from 8A to 100A as needed *For more details, please refer to the PDF document or feel free to contact us.

This product is a valve suitable for manufacturing equipment in pharmaceuticals, bioprocesses, cosmetics, food, and semiconductors. The diaphragm completely isolates the fluid from the drive mechanism, providing a highly airtight structure. It has a packless design that eliminates the gland packing area, which is often associated with a high risk of leakage in general valves, thus excelling in maintaining airtightness and preventing bacterial contamination. 【Features】 ■ Excellent airtightness ■ Structure that does not contaminate the fluid ■ Superior cleanability ■ Excellent maintainability ■ Customizable valve body to match applications and specifications *For more details, please refer to the sanitary valve catalog (pages 8-16) or feel free to contact us. (English and Chinese versions are available upon request!)

The "480(04) type" is a diaphragm valve made of porcelain lining that excels in corrosion and chemical resistance. It does not experience the permeation of chemical liquids, which can be a concern under certain conditions with fluororesin lining or rubber lining. Additionally, it is suitable not only as a corrosion-resistant valve for strong acid fluids but also for highly permeable fluids such as hydrochloric acid and phosphorus trichloride. 【Features】 ■ Does not experience the permeation of chemical liquids, which can be a concern under certain conditions with fluororesin lining or rubber lining. ■ Suitable not only as a corrosion-resistant valve for strong acid fluids but also for highly permeable fluids such as hydrochloric acid and phosphorus trichloride. ■ Base material: FCD-S, Lining: Porcelain *For more details, please refer to the PDF materials or feel free to contact us. (We have English and Chinese versions of the catalog available upon request!)

The "BQL400NB model" is a rapid-opening and closing type handle diaphragm valve from BioClean. While the standard handle version requires about 5 turns of operation (for DN50), the rapid-opening and closing handle allows for a very simple operation of just 【opening and closing by 90 degrees】. The position of the handle makes it clear to see the valve's open and close status even from a distance. Additionally, it has achieved a lighter and more compact design compared to conventional products. Please try the easy operation and stable sealing performance of the 90-degree rotating lever handle. 【We solve the following problems!】 ■ The opening and closing torque is excessive. → It can be reduced, greatly contributing to labor savings. ■ I want to check the open and close status from a distance. → The handle position clearly shows the valve's open and close status even from afar. ■ The valve is damaged due to over-tightening. → Only the minimum necessary operation is required. This prevents damage and extends lifespan. *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.)

Our company can select and provide valves made of suitable materials and structures for various types and conditions of fluids based on extensive experimental data and rich experience, through custom production tailored to our customers' needs. To deliver products that match societal needs in response to the rapid changes of the times, we are advancing technology development and research and development through our unique system. Additionally, we conduct strict quality control based on a quality assurance system certified by ISO 9001. 【Business Content】 ■ Manufacturing and sales of valves - Diaphragm valves - Ball valves - Butterfly valves - Other types of valves *For more details, please refer to the PDF materials or feel free to contact us.

At Japan Diaball Valve, we provide reliable, safe, and high-quality after-sales service. Our employees actually visit the site to conduct inspections and repairs while observing the conditions on-site. *Please feel free to contact us, as there may be cases where on-site inspections and repairs are difficult, such as with large-diameter valves. We support our users through five sales bases across the country and partner companies. For preventive maintenance and upkeep, please consult with us. We offer free materials featuring case studies available for download in PDF format. Please take a look. 【Features】 ■ Supporting the long-term maintenance and management of user facilities ■ Providing various maintenance-related services for our products based on our unique know-how accumulated over many years and the assurance of manufacturer quality ■ Accurately executing service operations entrusted to us by users, based on over half a century of rich experience and solid technical skills.

This document summarizes frequently asked questions about NDV products in general, specifically regarding 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.

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? ■ Can you 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 lifespan of the diaphragm? *For more details, please refer to the PDF document or feel free to contact us.

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.

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.

This catalog introduces bio-clean diaphragm valves suitable for manufacturing equipment in pharmaceuticals, bioprocesses, cosmetics, food, and semiconductors. It provides a wide range of information, including the features of bio-clean diaphragm valves, standard specifications, manual operation valve handle specifications, and air-operated ON-OFF valves. 【Contents (Excerpt)】 ■ Features of bio-clean diaphragm valves ■ Standard specifications ■ Manual operation valves ■ Air-operated ON-OFF valve (standard type): BPO1400NB(N) model ■ Air-operated ON-OFF valve (stainless steel drive part): BPO1400NBN model *For more details, please refer to the catalog (P8-15) 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.)

This product is the ideal valve for manufacturing equipment in pharmaceuticals, bioprocesses, cosmetics, food, and semiconductors. The valve body specifications are available in "stainless steel body" and "lined body." The diaphragm is made of New PTFE on the fluid side, with a cushion rubber of EPDM (or EPDM + a) specification. 【Stainless Steel Body Production Body List (Excerpt)】 <Stainless Steel Forged Products> ■ Main Material: SUS316L ■ Material Code Number: 14 ■ Ferrule (Nominal Diameter [DN]): 8 to 100 *For more details, please refer to the catalog (P10-11) or feel free to contact us. (English and Chinese versions are available upon request!)

This product is an optimal valve for manufacturing equipment in pharmaceuticals, bioprocesses, cosmetics, food, semiconductors, and more. The handle specifications include the stainless steel handle type "B400N," the aluminum handle type "BC400" (B400NB), and optionally, the quick-open/close handle type "BQL400NB" (BQL400N). Additionally, we can accommodate requests for features such as lock nuts and opening degree indicators, so please feel free to consult us. 【Features】 ■ B400N - High cleanliness and durability of the outer surface ■ BC400 (B400NB) - Lightweight and focused on cost benefits *For more details, please refer to the catalog (P12) or the leaflet, or feel free to contact us. (English and Chinese versions are available upon request!)

This product is an ideal valve for manufacturing equipment in pharmaceuticals, bioprocesses, cosmetics, food, and semiconductors. The air-operated ON-OFF valve is available in the stainless steel drive model 'BPO1400N type 05S to 16S'. Since painting is not required, it prevents the occurrence of foreign substances due to peeling of the coating, and a retaining ring method is used to secure the bonnet and cylinder. With minimal unevenness and compact design, along with buff polishing, it offers excellent cleanability. 【Features】 ■ All stainless steel construction with excellent corrosion resistance ■ Exterior shape with superior cleanability ■ Significant improvement in smooth operation and durability *For more details, please refer to the catalog (P15-16) or feel free to contact us. (English and Chinese versions are available upon request!)

The self-draining type is a valve body that further enhances the liquid retention prevention effect of the Bio Clean diaphragm valve series. When this valve is installed on horizontal piping, it is designed to eliminate liquid retention by positioning the valve shaft horizontally. 【Specifications (excerpt)】 ■ Stainless steel body (Applicable nominal diameter (DN): 8 to 100) ■ Lined body (Applicable nominal diameter (DN): 15 to 50) ■ The surface finish classification of the body and diaphragm specifications follow standard specifications. ■ Various drive components for manual operation valves and pneumatic ON-OFF valves can be used interchangeably. *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.)

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.)

We would like to introduce a two-stage opening and closing ball valve equipped with a two-stage rotary air-operated drive unit handled by Nippon Diaball Valve Co., Ltd. By installing a sub-cylinder in our standard rotary air-operated drive unit (90-degree rotation, Scotch yoke mechanism, W piston), the valve can mechanically perform a two-step operation during opening and closing. This allows for a controlled flow of a certain amount of fluid in a staged manner, and it has a proven track record for capacity control in quantitative shipping lines and for water hammer prevention. 【Features】 ■ Installation of a sub-cylinder in our standard rotary air-operated drive unit ■ Mechanically capable of two-step operation during valve opening and closing ■ Allows for a controlled flow of a certain amount of fluid in a staged manner ■ Proven track record for capacity control in quantitative shipping lines and water hammer prevention *For more details, please refer to the catalog or feel free to contact us. (An English version is available upon request!)

At Nippon Diaphragm Valve, we handle "clamp-connected corrosion-resistant valves" with a body made of fluororesin (ETFE) lining. These valves are suitable for countermeasures against corrosive fluids in sanitary piping, gap corrosion due to chloride ions, and metal ion elution. With the diaphragm valve's features of "air tightness" + "corrosion resistance," they can completely shut off corrosive fluids. We have many achievements not only in pharmaceutical and food plants but also in high-purity chemical lines. 【Features】 ■ Body material: SUS316L ■ Lining material: ETFE ■ Connection method: Clamp joint (ISO2852) ■ Applicable nominal diameter: 25A to 65A (1S to 2.5S) *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.)

We would like to introduce our diaphragm valve limit switch box, the 'MDNB Series', specifically designed for air-operated drive units. The indicator of the conventional model has been changed from a rubber cap to a bright red, dedicated resin indicator, improving visibility. This is a compact product with a direct mount type that incorporates a micro switch. 【Features】 ■ Direct mount type with built-in micro switch ■ Changed the indicator from a rubber cap to a bright red, dedicated resin indicator ■ Improved visibility due to the change in cap shape *For more details, please refer to the PDF document or feel free to contact us.

This document summarizes frequently asked questions about ball valves and provides answers in a Q&A format. If you have any questions or requests regarding our products other than ball valves, please feel free to contact us. 【Contents (Q&A)】 ■ Please tell us about the structure and features of ball valves. ■ Please tell us about the connection standards that can be manufactured for ball valves. ■ Please tell us about the structure and features of V-port valves. *For more details, please refer to the PDF document or feel free to contact us.

This document summarizes frequently asked questions about butterfly valves and provides answers in a Q&A format. If you have any questions or requests regarding our products other than butterfly valves, please feel free to contact us. 【Contents (Q&A)】 ■ What are the structure and features of butterfly valves? ■ What types of butterfly valves does NDV manufacture? ■ What are the features of stainless steel high-performance butterfly valves? *For more details, please refer to the PDF document or feel free to contact us.

This product is a valve developed for manufacturing equipment in pharmaceuticals, bioprocesses, cosmetics, food, and semiconductors. The air-operated ON-OFF valve is available in the standard type 'BPO1400NB(N)'. By adopting a wear ring on the outer circumference of the piston, the operation becomes smooth, significantly improving durability, and the use of a stopper nut prevents excessive load on the diaphragm. 【Features】 ■ Significant weight reduction and compact design ■ Major improvements in smooth operation and durability ■ Excellent cleaning-friendly exterior shape ■ Environmentally friendly paint used *For more details, please refer to the catalog (P13-14) 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.)

This is a corrosion-resistant valve with a total lining of glass that excels in corrosion resistance, making it suitable for use with highly permeable chemical solutions. 【Features】 ■ Excellent corrosion and permeation resistance: It can be used with strong acids such as hydrochloric acid and concentrated nitric acid, as well as highly permeable chlorine gas. It has corrosion resistance against almost all chemicals, except for some such as alkalis. ■ Wear resistance: Compared to PFA linings, which show similar corrosion resistance, it has superior wear resistance, making it suitable for use with slurry-type chemical solutions. *For more details, please refer to the PDF document or feel free to contact us.

The "BQL400NB model" is a rapid opening and closing type handle diaphragm valve from BioClean. While the standard handle type requires about 5 rotations for operation (in the case of DN50), the rapid opening and closing handle allows for a very simple operation of just "opening and closing by 90 degrees." The valve's open and closed status can be clearly identified from a distance based on the handle position. Additionally, it has achieved a lighter and more compact design compared to conventional products. We invite you to try the easy operation and stable sealing performance of the 90-degree rotating lever handle. 【We solve these problems!】 ■ Excessive opening and closing torque → Reduction is possible, greatly contributing to labor savings. ■ Want to check the opening and closing status from a distance → The valve's open and closed status can be clearly seen from a distance based on the handle position. ■ Damage caused by over-tightening the valve → Only the minimum necessary operation is required. This prevents damage and extends the lifespan. *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.)