A new category "Valve FAQ" has been established on the NDV special site!

Nippon Daiya Valve Co., Ltd.

We have published "General Information on NDV Products" and "Diaphragm Valve Edition" in the Valve FAQ section. You can access it from the link below, so please take a look. *For more details, please refer to the PDF document or feel free to contact us.

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Related product information

Valve FAQ Frequently Asked Questions [General NDV Products Edition]
General NDV Products Edition! We will answer frequently asked questions about valves.

【Other Publication Contents (Q&A)】 ■ What do "single acting" and "double acting" mean in relation to air-operated valves? ■ Please tell me about the support period for spare parts. ■ What information is needed when requesting a quote for a valve? ■ Are there any products or parts that are subject to export restrictions? *For more details, please refer to the PDF document or feel free to contact us.
Frequently Asked Questions about Valves [Diaphragm Valve Edition]
Diaphragm Valve Edition! We will answer frequently asked questions about valves!

【Other Published Content (Q&A)】 ■ Can the existing rubber diaphragm be replaced with a PTFE diaphragm? ■ What are the operating pressure and temperature ranges for the diaphragm valve? ■ How do I replace the diaphragm? ■ What are the applicable flange standards for diaphragm valves? ■ What is the "minimum liquid accumulation angle" for diaphragm valves? ■ What auxiliary devices are used with air-operated diaphragm valves? ■ What is the difference between buff polishing and electropolishing? ■ Are there any special precautions to be aware of when piping diaphragm valves? ■ Please provide details about environmentally friendly products. *For more information, please refer to the PDF materials or feel free to contact us.
NDV Wear Type Diaphragm Valve: 400 Type
Exhibits high airtightness and valve seat sealing performance! Excellent in corrosion resistance, chemical resistance, and cleanability.

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.)
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!

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.)