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

This document is a product catalog for butterfly valves manufactured and sold by Japan Diaball Valve. It features the "Stainless Steel High-Performance Butterfly Valve," which can be used in applications with no flow direction and reverse pressure load lines, as well as the "Cast Iron Butterfly Valve" with high sealing performance and the "PFA Lined Butterfly Valve," which excels in corrosion and chemical resistance. You can choose according to your application. [Contents] ■ Stainless Steel High-Performance Butterfly Valve ■ Cast Iron Butterfly Valve ■ PFA Lined Butterfly Valve ■ Introduction of Related Products ■ Technical Information ■ Handling Precautions *For more details, please refer to the PDF document 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!)

We handle "valves exclusively for the discharge of tablets and powder granules." With a shape and structure that minimizes tablet residue, we offer a "damper" for safe tablet discharge, and a "butterfly valve" designed for lightweight construction, making installation and removal easy. The main components are made of stainless steel and have a buff-polished finish, ensuring no adhesion of tablets or powder granules and excellent cleanability. 【Features】 <Damper> - Structure that does not crush tablets when opening the damper - Equipped with a stopper at the opening and closing position to securely maintain the position <Butterfly Valve> - Lightweight design allows for easy installation and removal from containers and piping - Adopts a clamp method for quick assembly and disassembly, making cleaning easy *For more details, please refer to the PDF materials or feel free to contact us. (The English version 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.

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.)

The "C201R type" features a double eccentric (double off-center) design for the disk's drive axis, allowing the disk and seat to remain in non-contact until just before full closure, resulting in minimal wear on the seat and a long lifespan for this cast iron butterfly valve. The seat is designed with a centering feature on the contact surface, creating a self-sealing mechanism that generates contact pressure on the disk's sealing surface due to fluid pressure, enabling efficient sealing from vacuum to high pressure. Additionally, during maintenance, the seat can be easily replaced by simply removing the seat cover. 【Features】 ■ Long lifespan due to double off-center mechanism ■ High sealing performance with centering self-seal ■ Easy maintenance *For more details, please refer to the catalog (P11-P17) 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.)

The "KM200 series" is a high-performance stainless steel butterfly valve that accommodates a wide range of fluids thanks to its reinforced PTFE seat. The drive shaft center of the disc is double-eccentric, and the disc and seat remain non-contact until just before fully closed, resulting in minimal seat wear and a long lifespan. The structure allows the disc and seat to be pressed together by fluid pressure, regardless of the flow direction on either the primary or secondary side. 【Features】 - Long lifespan due to the double-eccentric mechanism - Usable in reverse pressure load lines as there is no specific flow direction - Accommodates a wide range of fluids due to the reinforced PTFE seat - Seat replacement can be easily performed by removing the set ring - Synthetic rubber and metal seats can also be selected according to usage conditions *For more details, please refer to the catalog (P5-P10) 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.)

The "Sanitary Butterfly Valve for Powder and Granule Discharge" has numerous achievements in the discharge of powders and granules in pharmaceutical and food plants' containers. The main components are made of stainless steel, and the inner surface is finished with #400 buff polishing, which minimizes the adhesion of powders and granules and provides excellent cleanability. 【Features】 ■ Minimal adhesion of powders and granules, with excellent cleanability ■ Easy installation and removal for containers and piping ■ Adopts a clamp method for quick assembly and disassembly, making cleaning easy *For more details, please refer to the catalog or feel free to contact us.

The "PFA Lined Butterfly Valve" is a highly reliable corrosion-resistant butterfly valve that is fully lined with PFA. All components that come into contact with the fluid are made of PFA, providing excellent corrosion resistance to most chemicals. The gland mechanism, which has self-sealing and wedging effects, offers high shaft sealing performance against thermal cycles and frequent opening and closing. Additionally, the inclusion of V-packing and coil springs enhances the reliability of the shaft sealing performance against external leakage. 【Features】 ■ Excellent corrosion and chemical resistance ■ High shaft sealing performance ■ Durable casing ■ Resistance to permeation and non-stick properties *For more details, please download the PDF or feel free to contact us.

■NDV "PFA Lined Butterfly Valve" This product is a highly reliable corrosion-resistant butterfly valve with a total lining of PFA. All parts that come into contact with the fluid are made of PFA, providing resistance to most chemical substances. The gland mechanism, which has self-sealing properties and a wedging effect, ensures high shaft sealing performance against thermal cycles and frequent opening and closing. 【Features】 〇 Excellent corrosion and chemical resistance 〇 High shaft sealing performance 〇 Durable casing 〇 Resistance to permeation and non-stick properties ■ This product will be exhibited at "INCHEM TOKYO 2025," held at Tokyo Big Sight from September 17 to 19. 【INCHEM TOKYO 2025 Overview】 Date: September 17 (Wed) to September 19 (Fri), 2025, 10:00 AM to 5:00 PM *Online exhibition from September 1 (Mon) to October 31 (Fri), 2025 Location: Tokyo Big Sight (East Hall 5) Booth Number: 5-E14 *For more details, please download the PDF or feel free to contact us.