Laminar Pte Ltd Singapore

Laminar Pte Ltd


Fire Safe Ball Valves

Group 1 1
Group 1 1


Fire-Safety Ball Valves, also known as thermal shut-off valves or Fusible Link 3-Piece Ball Valves, automatically shut down gas or fluid leakages in the pipeline when a fire is detected. They protect against fire spreading and ensure safer performance than standard shut-off valves.

The fusible top work assembly opens when the heat-sensitive element shrinks, shutting fluid flow via the pipeline and preventing any possible internal leakage. The most common type of leakage is valve stem wear out, which necessitates the replacement of the metal-to-metal seating arrangement with a new one.

Depending on the type of flammable fluids (or gas and toxic chemicals) flowing through the pipeline system, we can engineer the fusible link to melt at different setpoints (temperatures) and pressure ratings. These fluids may include natural gas, propane, oil, water, etc.





 DN15 (½”) – DN250 (10”)


Ammonia Gas | Natural Gas | Liquified gas  | Methanol | Oil | Combustible Gas or liquids


Petrochemical industries | Power and Gas Industries | Biofuel Processing Plants


  • There is no need for electric or pneumatic control in case of a fire breakout. The valve will automatically cut off using its integrated mechanical sensor.
  • Fusing temperature is 165°F (74°C) – 212°F (100°C).
  • Valve’s material options are carbon steel, stainless steel, and fluorine lining.
  • The valve can be a ball valve or a butterfly valve.
  • End connections for ball valves: threaded, butt-welding, flanged. For butterfly valve, flanged & grooved clamp.


Fire safety is of the utmost importance in industrial processes, and fire-safe ball valves are essential in ensuring these systems’ safety and reliability. High-quality stainless steel, which can withstand extreme temperatures and harsh conditions, is used to manufacture these valves. They are ideal for applications where fire safety is a top priority and can provide enhanced emergency protection.

Fire-safe ball valves have a unique design that allows quick and efficient shut-off in an emergency, preventing the spread of flammable liquids or gases and potential disasters. Their stainless steel construction provides durability and resistance to corrosion, making them suitable for use in a wide range of industries such as oil and gas, chemical processing, and power generation. In addition, their fire-resistant properties comply with stringent safety regulations and standards.

These valves are reliable and cost-effective solutions for fire safety in industrial settings. Their ability to maintain tight shut-off capabilities at high temperatures makes them indispensable in protecting lives and property. Fire-safe ball valves are crucial in safeguarding industrial processes by preventing the spread of fires and minimizing potential damage.

Fire-safe and fire-tested valves are the two common valves used for fire safety. Although both valves serve the same purpose, their design and functionality differ significantly. Fire-safe ball valves are equipped with a fusible link assembly that melts at a specific temperature in case of a fire, causing the valve to shut off automatically. This design offers reliable protection, thus preventing the spread of fire.

Fire-tested valves have special seals and gaskets that prevent gas or liquid from leaking out in case of a fire. In contrast, fire-safe valves offer more reliable protection due to their automatic shut-off capabilities. Retrofitting fire-safe valves into existing systems is also more cost-effective and easier to do.

In summary, fire-safe ball valves are essential for maintaining fire safety in industrial settings. Their ability to offer reliable protection, cost-effectiveness and easy retrofitting into existing systems make them an ideal choice for a wide range of applications.

Fire valves are essential for protecting life and property in a fire. These valves rely on a pneumatic actuator and a thermal shut-off valve to detect and respond quickly to fire hazards.

Heat or smoke triggers the actuator, which activates a limit switch. The limit switch sends an electrical signal to close the shut-off valve and stop fuel flow. During emergencies, fire-safe valves maintain their integrity and withstand high temperatures.

By understanding how these components work together, we can appreciate the importance of fire valves in ensuring safety in various environments.

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