The category "Valve FAQ <Frequently Asked Questions>" on the NDV special site has been updated!

Introducing high-quality diaphragm valves, ball valves, and butterfly valves!

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!)

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A large number of ball valves, including fire-safe types and V-port valves, are featured!!

This document is a product catalog for ball valve products from Nihon Diaball Valve, a company engaged in the manufacturing and sales of valves. It includes the "Fire Safe Type Ball Valve," which can suppress fluid leakage when sealing parts such as seats and packing are burned in a fire, as well as the "High Pressure and Large Diameter Ball Valve," commonly used for general processes and high-pressure sludge, and the "Jacketed Ball Valve," which has a double structure with a jacket on the outside of the main body. You can choose from a wide range of options tailored to your application. [Contents] ■ Two-Way Ball Valve ■ Three-Way Ball Valve ■ V-Port Valve ■ Pneumatic Operated Valve ■ Electric Operated Valve ■ Special Purpose Ball Valves ■ 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.)

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A new product with IP65 equivalent water resistance and a 360-degree easily visible indicator.

We are pleased to introduce our new product from Japan Diavalve. 【Features】 ■ 360-degree visible indicator Adopts a dome-shaped transparent cover for excellent visibility. You can check the valve's open and closed status from various angles. ■ Compact body with high torque 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 catalog or contact us. (We have English and Chinese versions of the catalog available upon request!)

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It is possible to flow a certain amount of fluid in a stepwise manner! There are many proven results in filling equipment and more!

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!)

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● The production time for casting prototypes can be shortened! Since model making is not required, the production time for prototypes, which previously took about a month, can be significantly reduced. ● Model costs can be reduced! By directly creating sand molds from 3D data, there is no need for model production costs. If changes to the model are necessary, they can be addressed by modifying the 3D data. ● Similar products with different shapes and dimensions can be prototyped simultaneously! Different products, such as similar shapes or variations in dimensions, can be created in a single molding process. This allows for the verification of multiple types in a short period.

The "Mechanical Stitching Method" by Nichinichisui Road Machinery Co., Ltd. is a new technique that allows for the repair of metal cracks without the application of heat. By using special bolts and reinforcement plates, cracks are physically removed, and repairs are made without causing any thermal impact on the base material. Repairs can be carried out even in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. ◎ For more details, please contact us. ◎ If a detailed technical explanation is needed, please contact us.

We will introduce the implementation results of the sensor technology developed by the Hotron Group, which has been cultivated over more than half a century, through customer case studies. In addition to automatic door sensors, we also offer a wide range of vehicle detection sensors and nursing/care sensors. Many implementation examples are also presented, so please take a look at the case study page.

● This is a leak testing device for small electronic components that does not use fluorinated inert liquids (PFAS-free). ● There is no longer a need for unstable visual confirmation through liquid immersion testing. It adopts a quantitative testing method that allows for stable pressure leak testing. ● It is a tabletop leak testing device specifically for gross leaks, with accuracy equal to or greater than that of liquid immersion testing. ● The detectable range is approximately 1×10⁻² Pa·m³/s to 1×10⁻⁶ Pa·m³/s (varies depending on the target product). ● It is suitable for sealed structures ranging from a few millimeters to a maximum of 80 × 70 mm. Please feel free to contact us for more information!

The "Mechanical Stitching Method" by Nichinichisui Road Machinery Co., Ltd. is a new technique that allows for the repair of metal cracks without the application of heat. By using special bolts and reinforcement plates, cracks are physically removed, and repairs are made without causing any thermal impact on the base material. Repairs can be carried out in environments where open flames cannot be used. Since no heat is applied, the disassembly of equipment is minimized. ◎ For more details, please contact us. ◎ If a detailed technical explanation is needed, please contact us.