Industries & Applications

Examples of Where Our Springs Have Been used By utilizing our spring manufacturing technology that we have nurtured over the years,

we have solved a whole host of spring-related issues in various fields.

Case Our unique technology solves the “lateral load problem” that affects accuracy of valves!

Our unique technology solves the "lateral load problem" that affects accuracy of valves!

Client Data

Safety valves for power plants

Use Spring:Coil springs

Period:About 2 months *Excluding the testing machine development period.

Our unique coil spring technology solves the problem of lateral load.

Examples of Tokai Spring achievements

Tokai Spring Industries possesses unique manufacturing technology based on many years of experience of delivering products to customers who manufacture safety valves for power plants. Our springs are particularly useful for safety valves that require high-precision springs.

Problems and challenges

When a load is applied to a coil spring, a twisting force is applied to the spring axis, and a load is also generated in the lateral direction*. Safety valves, especially high pressure valves, require normal operation at the specified pressure, but this lateral motion generated in the spring has a significant impact on the operation of the safety valve, causing problems for customers.
*It is called “lateral load” here.


Since there have been many requests for countermeasures against the “lateral load” generated in coil springs, we have developed a special testing machine that can measure the “lateral load” exclusively for coil springs used in safety valves. With this testing machine, we are able to quantify and visualize the forces generated in springs, which were previously invisible, and provide springs with minimal “lateral load”.


Our coil springs, which minimize the lateral load in safety valves, are used in our customers’ safety valves, contributing to the accurate opening and closing of valves and to the added value of our customers’ products.

  • Request a Design Further Inquiries
  • Our Oder-To-Deliverly Process
  • supporting meterials
  • Tokai Spring's Forum