We aim for continued “growth” through “coexistence” with everyone.


President Toshiyuki Sakamoto

OKAYA SEIRITSU ENGINEERING was founded in 1950 to manufacture hydraulic control equipment.
With our superior control technology, we develop control systems and actuators for controlling the flow of gas and liquids, and we have made a wide range of contributions to high-tech factories, such as for pharmaceuticals, LCDs, and bio; room pressure controllers for laboratories, water and sewer treatment facilities important for daily life; steel plants that make basic materials; and power plants needed for social infrastructure.
For something more familiar, we are also highly regarded for our inspectors that are used to judge the acceptability of the content of everyday plastic bottles and cans.
Accordingly, we demonstrated solid growth by focusing on the needs of customers and society, creating new products, and developing products that are environmentally friendly.
Our challenges continue to become more complex as market needs become more sophisticated, we engage in business activities with the aim of global development, and there is a need environmental conservation.
Each of our employees aims for continuous growth and innovation and to working with you to make further improvements to the technology, products, and maintenance services that we have developed over half a century.