Leading Manufacturer of Diaphragm Valves

Since its foundation in 1955, NDV (Nippon Daiya Valve) has established itself as a leading manufacturer of diaphragm valves, contributing to industrial development and the maintenance of a sustainable social environment. With decades of expertise, NDV continues to provide high-performance, safe, and environmentally friendly valve solutions tailored to diverse industry needs.

NDV’s representative product, the diaphragm valve, is superior in “air-tightness,” “maintenance,” and “corrosion and chemical resistance.” We can adapt to many fields because we construct valves from a vast selection of materials to meet the requirements and composition of fluids, being superior in terms of cost performance as well. Made from the wealth of experience and achievements cultivated over a long history, our products offer peace of mind with high quality and high performance.

Delivering High-Quality NDV Brand Products: Diaphragm Valves, Ball Valves, and Butterfly Valves

Nippon Daiya Valve provides a comprehensive range of valves, including ball valves and other solutions, alongside its flagship diaphragm valves. Designed for efficiency, safety, and environmental sustainability, NDV valves cater to diverse industry needs, ◉ including chemical processing, ◉ environmental and water treatment, ◉ iron and steel, ◉ pharmaceutical, ◉ food, ◉ electronics, ◉ and power plants.

Our ball valve lineup offers versatile options such as multi-way and v-port designs, in addition to standard firesafe types. We also accommodate custom orders for specialized applications, including high-pressure environments, shield machines, and nuclear power plants.

Expanding our global reach, we ensure seamless support across Japan, China, Thailand, and key markets worldwide.

Our manufacturing and research and development activities are carried out at our Head Office Plant in Shinagawa, Tokyo. With sales offices strategically located across Japan, including the head office, we are equipped to offer comprehensive support to a wide range of customers nationwide.

In 2006, we expanded internationally by establishing a subsidiary, TIANJIN DAIYA VALVE CO., LTD., in China. Furthering our global presence, we launched NDV (Thailand) Co., Ltd. in 2015. We are also strengthening collaborations with local partners in countries such as Vietnam, India, South Korea, and beyond. This expansion ensures the sustainable and stable supply of our products while broadening our sales footprint.

NDV Stock Availability in Thailand

We maintain a stock of various NDV diaphragm and ball valves in Thailand for quick delivery, including manually operated and pneumatically operated models.

1. Diaphragm Valves

Weir Type Diaphragm Valve (Manually Operated) - Type 400

  • Body Material: SCS13A and Hard Natural Rubber lined
  • Diaphragm Material: Natural Rubber, Chloroprene Rubber, EPDM & New PTFE+EPDM
  • Process Connection: JIS10K and ANSI 150 RF
  • Size: 15A to 100A (½” to 4”)
  • Technical Catalog: DE303-03 (Pages 6, 8, 10, 11, 12, 13, 14)

Pneumatically Operated On-Off Diaphragm Valves - Type PO(PC, PN) / HO(HC, HN) 1400N

  • Body Material: SCS13A and Hard Natural Rubber lined
  • Diaphragm Material: Natural Rubber, Chloroprene Rubber, EPDM & New PTFE+EPDM
  • Process Connection: JIS10K and ANSI 150 RF
  • Size: 15A to 100A (½” to 4”)

2. Ball Valves

2-Way Ball Valve - Type F107NB

  • Body Material: SCS13A and Hard Natural Rubber lined
  • Diaphragm Material: Natural Rubber, Chloroprene Rubber, EPDM & New PTFE+EPDM
  • Process Connection: JIS10K and ANSI 150 RF
  • Size: 15A to 100A (½” to 4”)
  • Technical Catalog: DE303-03 (Pages 6, 8, 10, 11, 12, 13, 14)

2-Way Ball Valve Fire Safe - Type F100NB

  • Body, Ball & Cap Material: SCS13A (Stainless Steel)
  • Stem & Stud Bolt Material: SUS304 (Stainless Steel)
  • Gasket & Packing Material: PTFE
  • Process Connection: JIS10K and ANSI 150 RF
  • Size: 15A to 100A (½” to 4”)
  • Technical Catalog: BE302-04 (Pages 7, 8, 9, 10, 12, 13, 14)

Pneumatically Actuated Ball Valves

  • Stock available for fitting with actuators
  • Assembly services available