THINKTANK is pleased to announce that our Fusible Link Valve (FSV Series) has successfully obtained API 607 Fire-Safe Certification, issued by TÜV.
This certification confirms that the valve maintains sealing performance and operational integrity when exposed to fire conditions. For industries where fire protection and emergency shutdown are critical, this verification provides an additional level of reliability and safety.
Why Fire-Safe Certification Matters
Fusible Link Valves are widely used as automatic emergency shutoff valves in fuel storage and fuel supply systems.
When the surrounding temperature reaches the melting point of the fusible element, the valve automatically closes, isolating the fuel source and preventing further escalation of the fire.
However, during a real fire scenario, the valve itself is exposed to extremely high temperatures.
If the valve cannot maintain its sealing capability after fire exposure, leakage may occur and the fire risk can increase significantly.
The API 607 fire test verifies that the valve can:
- Maintain acceptable leakage limits during and after fire exposure
- Preserve structural integrity under high temperature conditions
- Continue to provide isolation after the fire event
Obtaining this certification demonstrates that the valve design meets internationally recognized fire-safe requirements.
Tested and Certified by TÜV
The fire-safe test for THINKTANK’s Fusible Link Valve was conducted and certified by TÜV, an internationally recognized third-party certification body.
The test procedure follows the API 607 standard, which simulates real fire conditions to evaluate valve performance under extreme thermal stress.
During the test, the valve is exposed to direct flame for a specified period while monitoring leakage rates and structural stability. The valve must continue to function and maintain sealing performance within strict limits defined by the standard.
Passing this test confirms that the valve is suitable for critical safety applications in fuel handling systems.
Typical Applications
THINKTANK Fusible Link Valves are commonly used in systems where automatic fuel isolation is required during fire emergencies, including:
- Diesel generator fuel supply systems
- Fuel oil storage tanks
- Day tanks and fuel distribution pipelines
- Industrial fuel transfer systems
- Fire protection and emergency shutdown systems
In these applications, the valve acts as a passive safety device that requires no external power or control signal.
Designed for Reliability in Emergency Situations
Our FSV series fusible link valves are designed to provide dependable operation when it matters most.
Key features include:
- Selectable fusible temperature ratings to match system requirements
- Spring-loaded automatic shutoff mechanism for rapid closure
- Robust valve body design for industrial environments
- Compact installation for fuel pipelines and tank outlets
Combined with the API 607 fire-safe certification, these design features ensure the valve can perform its protective function even under severe fire exposure.
What should buyers check in a fusible link valve document package?
A fusible link fire shutoff valve combines a temperature-sensitive release mechanism with a valve that isolates the line. Review those functions separately when comparing quotations. The melting-temperature marking on the link and the fire-test record for the valve answer different engineering questions.
| Document or requirement | What to verify |
|---|---|
| Fusible link identification | Manufacturer, model, release temperature and the applicable component certification. |
| API 607 fire-test record | Tested valve design, material and seat configuration, size/pressure coverage and the report’s qualification scope. |
| Valve duty and rating | Actual fuel or process fluid, operating temperature, pressure class, end connections and required shutoff performance. |
| Spring mechanism and installation | Closure direction, orientation, operating clearance, access for inspection and reset procedure. |
| Factory acceptance records | The agreed pressure, seat-leakage and functional checks, tied to the valve tag or serial identification. |
| Project acceptance | Any additional listing, approval, witnessing or documentation required by the project specification. |
A UL/FM-certified fusible link component does not by itself establish a UL/FM approval for the complete valve assembly. Similarly, a valve fire-test report should be reviewed within its stated qualification scope. THINKTANK identifies UL/FM at the fusible-link component level and provides the applicable FSV valve documentation for project review.
When should you consider an electric spring-return valve instead?
The trigger is the key distinction. A fusible link provides local temperature-triggered release. A mechanical spring-return electric actuator provides a defined return action on loss of actuator power; remote shutdown behavior depends on its approved wiring and control arrangement. A project may specify one function or both at different points in the fuel system.
For data-center fuel lines, use the cause-and-effect to distinguish a local thermal event, remote shutdown command, electrical supply loss and restart. Our data-center spring-return valve application guide explains how to specify those conditions and test the resulting assembly.
Request an FSV valve selection and document review
Send the medium, operating pressure and temperature, valve size, connection standard, required link temperature, installation arrangement and project document list. THINKTANK can then review the valve configuration and applicable documentation against the inquiry.
Contact THINKTANK about your fusible link valve requirement. For related package scope and project references, see our data-center fuel-system valve package.
Supporting Global Safety Requirements
As fuel storage and diesel backup systems continue to expand in industries such as data centers and industrial plants, safety standards for fire protection equipment are becoming increasingly stringent.
By achieving API 607 certification through TÜV, THINKTANK provides customers with a valve solution that aligns with international fire safety expectations.
About THINKTANK
THINKTANK is a professional manufacturer of industrial valves serving global engineering companies and system integrators.
Our product range includes control valves, safety valves, breather valves, and fusible link fire safety valves, widely used in CSP, TES, oil & gas, chemical, power generation, and storage tank systems.
So if you are working in the data center industry, whether you are:
- a data center EPC contractor
- an MEP contractor
- a diesel generator supplier
- a fuel tank manufacturer
- or a diesel fuel transfer system integrator
there is a high possibility that fusible link fire safety valves are required in your fuel safety design.
THINKTANK is currently the only manufacturer of fusible link fire safety valves in China, with certifications including UL/FM (Fusible Link), CE, ATEX, and API 607 fire test certificates.
We welcome engineering companies and system integrators to contact us to establish long-term cooperation and technical collaboration for data center fuel safety systems.
For complete valve package support in data center diesel generator fuel systems, visit our Data Center Fuel System Valve Package page.
