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.
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.
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.
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.



