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  1. Home
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  3. Nippon Daiya Valve Co., Ltd.
  4. Introduction to initiatives for the environment
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  • Sep 10, 2020
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Sep 10, 2020

Introduction to initiatives for the environment

Nippon Daiya Valve Co., Ltd. Nippon Daiya Valve Co., Ltd.
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.
Introduction to efforts regarding the environment
Introduction to efforts regarding the environment
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Introduction to initiatives for the environment

Aiming to create environmentally friendly valves... "The entire company is united in promoting the continuous reduction of environmental impact!" "ISO 14001 certification obtained!"

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.)

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Straight type diaphragm valve: 500 type

The flow path is close to straight, with a structure that has low pressure loss and minimal liquid accumulation! It is suitable for fluids containing sludge, suspended solids, and more!

A diaphragm valve is a type of valve that has a structure that opens and closes the flow path using a flexible diaphragm (membrane) made of materials such as rubber. The "Straight Type Diaphragm Valve: 500 Series" features a flow path that is nearly linear (straight), resulting in a structure with minimal pressure loss and liquid accumulation. It is suitable for fluids containing viscous fluids, fibrous fluids, slurries, sludge, and suspended solids. ▼ Application Fields: Water treatment plants, final treatment facilities, 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.)

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NDV Wear Type Diaphragm Valve: 400 Type

Exhibits high airtightness and valve seat sealing performance! Excellent in corrosion resistance, chemical resistance, and cleanability.

A diaphragm valve is a type of valve that has a structure for opening and closing the flow path using a flexible diaphragm (membrane) made of materials such as rubber. The "Wear-type diaphragm valve: Type 400" is the basic form of a diaphragm valve that has a weir in the flow path. The fluid passage section is streamlined and has no pocket areas, which minimizes liquid accumulation and provides self-cleaning properties. Due to the valve's structure, it exhibits high airtightness and seat sealing performance. There is a wide variety of materials available for the body and diaphragm, allowing it to accommodate a broad range of fluids. ▼Applicable fields: Chemicals, environmental and water treatment, steel, shipping, pharmaceuticals, food, semiconductors, power generation, etc. *For more details, please refer to the catalog (P6–P14) 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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NDV "Ball Valve" Comprehensive Catalog

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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Diaphragm Valve Comprehensive Catalog *Includes Technical Data

Achieving high maintenance efficiency with a unit-based design! A diaphragm valve with high airtightness, zero seat leakage, and excellent corrosion and chemical resistance.

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.)

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Japan Diavalve Co., Ltd. "Product Guide" Catalog

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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NDV [Introduction to Environmental Initiatives]

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Japan Diavalve Co., Ltd. Company Profile

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[English Version (Latest DE303-04)] NDV "Diaphragm Valve" Comprehensive Catalog *Technical materials included

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[YouTube Update] Differences in Cleansing Ingredients You Should Know Before Developing an Original Shampoo

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We have released a new video on our company’s YouTube channel. The theme of this video is "The World of Amino Acid-Based Shampoos." Amino acid-based shampoos have become popular in recent years, but the lather, feel, and finish can vary greatly depending on the cleansing ingredients used. In this video, we clearly explain the changes in user experience based on the differences in cleansing ingredients by comparing two types of amino acid-based shampoos. We hope you can use this as a hint for developing original shampoos and differentiation.

Jun 26, 2026

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When the sensor detects the car, the rotating light will turn on.

Ideal for entrances and exits of parking lots and stores! Notify pedestrians of vehicle departures with the light from the rotating lamp! Here is a proposal for a departure warning sensor! Free catalog available!

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  • CATALOG

[To the owners of parking lots and parking lot construction companies] "I’m worried about not colliding with pedestrians when exiting the parking lot..." Among vehicle entrances to parking lots, stores, residences, and factories, those particularly facing sidewalks or roadways are expected to pose risks of dangerous incidents such as collisions with pedestrians or between vehicles. To alleviate such concerns, Hotron proposes a [Vehicle Exit Warning Sensor] that detects vehicle departures using various sensors and alerts the surroundings with LED lights and buzzers. The device consists of a simple configuration of "Sensor" + "Controller" + "Switching Power Supply (24V)" + "LED Rotating Light." *Please note that a separate control panel is required to include the controller and switching power supply (24V) when using the exit warning system. *We kindly ask that customers arrange for the switching power supply (24V), LED rotating light, control panel, circuit breakers, etc. Since it can be retrofitted, it can also be used for existing parking lot entrances. We hope this will contribute to safer vehicle passage for everyone. ◎ For more details, please contact us or download the catalog.

Jun 26, 2026

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Metal Crack Repair: MS Method for Repairing Cracks and Fractures in Machinery Equipment

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  • CATALOG

Metal cracks are one of the concerns in equipment maintenance operations. Conventional welding repair methods can alter the base material around the crack due to heat, leading to residual stress and deformation, which always carries the risk of "crack recurrence" and "secondary damage." Hinode Water Supply Equipment Co., Ltd.'s "Mechanical Stitching Method" is a new technique that allows for metal crack repair without applying heat. By using special bolts and reinforcement plates, the crack is physically removed without affecting the base material with heat. Repairs can be made 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 or download the catalog.

Jun 26, 2026

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[Video Manual Guide] We will clearly explain how to connect the wireless set that links the bed exit sensor and nurse call system through video!

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  • OTHER

Hotron, which manufactures and sells sensors, provides bed exit sensors for hospitals, nursing, and care facilities. Hotron offers easy-to-understand video guidance on how to use the bed exit sensors wirelessly and how to set up device connections! ▼ Video Manual (YouTube) https://www.youtube.com/playlist?list=PLNVA4mTrZDqtJa6MfFRZQxwtfCSnAfxVy 【Bed Exit Sensors】 ○ Non-contact infrared sensor, simply place it - Pole-kun HB-H1 ○ Mat sensor, foldable thin mat - Mat-kun HB-UST ○ Body movement call - Ugo-kun HB-TV3 ○ Body movement call for wheelchairs - Ayumi-chan HB-WTV3 【Options】 ○ Nurse call linked wireless set - Wireless set (transmitter/receiver) HB-RS/HB-RJ ◎ For more information about the products, please contact us or download the catalog.

Jun 25, 2026

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Metal Crack Repair: MS Method for Repairing Cracks and Fractures in Machinery Equipment

  • NEW
  • PRODUCT

Metal cracks are one of the concerns in equipment maintenance operations. Conventional welding methods for repairs can cause changes in the base material around the crack due to heat, leading to residual stress and deformation, which always carries the risk of "crack recurrence" and "secondary damage." Hinode Water Supply Equipment Co., Ltd.'s "Mechanical Stitching Method" is a new technique that allows for the repair of metal cracks without applying heat. By using special bolts and reinforcement plates, the crack is physically removed without affecting the base material at all. Repairs can be made 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 or download the catalog.

Jun 25, 2026

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