Self-obstructing flammable fluid carrying conduit

An assembly for restricting fluid flow in response to elevated temperatures, the assembly comprising:

• a conduit configured for transport of flammable fluid;
• a liner within the conduit;
• the liner comprising a material configured to contract in response to an elevation in temperature;
• the liner disposed on an inner surface of the conduit;
• a non-expandable and non-hollow core positioned within the liner;
• the liner substantially encircling an opening formed between the liner and the non-expandable and non-hollow core configured to allow the flammable fluid to flow through;
• and
• wherein upon exposing the conduit to elevated temperature, the liner within the conduit surrounds the non-expandable and non-hollow core to close the opening sufficient to substantially prevent flow of flammable fluid through the conduit.

An assembly for restricting gas flow in response to elevated temperatures, the assembly comprising:

• a conduit configured for transport of flammable fluids;
• a liner disposed on an inside wall of the conduit, the liner comprises a material configured to expand in response to an increase in temperature;
• a solid, non-expandable core positioned within the liner;
• an opening formed between the liner and the solid, non-expandable core configured to allow the flammable fluid to flow through;
• wherein upon exposing the conduit to elevated temperature, the liner within the conduit contacts the solid, non-expandable core to close the opening sufficient to substantially prevent flow of flammable fluid through the conduit.