Quality/Technology

Bellows and Valves Manufactured In-House

These high-quality bellows sealed valves incorporate bellows specially made for valves, which we have manufactured based on the technology we have accumulated over the years, since we developed the first domestically produced metal seamless bellows in 1927. The excellent features are highly regarded and it is used in a wide range of "fields where leakage is essential," such as atomic energy, electricity, semiconductors, chemicals, and vacuum.
Seamless bellows formed from a single sheet
Bellows seal valve cross section

A Lineup for a Wide Range of Fields

Bellows valve products are currently used under various conditions (high pressure, vacuum, ultra-low temperature, etc.) As technological innovation continues to advance, we offer a range of sizes from miniature to 300A to meet the diverse needs of our users.
▲Size comparison
▲For ultra-low temperatures
  ▲For vacuums
  ▲For high pressure

Customization Possible Only with High-Quality Valves

Because these products play such important roles, we place great importance on customer needs, and our experienced technical team will respond with unique ideas and cutting-edge technology to "custom products for specific fluids and applications" that reflect individual requests.
▲UF-20 type
▲UF-20 type automatic flow control valve

To Deliver Stable Products

In order to deliver high-quality products without any flaws, all important processes such as assembly and inspection are carried out domestically (at the Iwaki Factory). For product traceability, we can search through 10 years of production history in a moment due to the system we have built that supports ISO9001 and is repeatable even in the present.
▲Iwaki Factory
▲ISO 9001

Contact Us Here

Ohno Bellows Industry
[Head Office]
146-0093
Tokyo, Ota Ward, Yaguchi 2-15-17
TEL.03-3759-6671
FAX: 03-3758-7551
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