Safety valves, vehicles and fueling stations including the same, and related methods

A safety valve comprising:

• a valve body defining an interconnected fluidic network including:
• an inlet;
• an outlet;
• and
• a flow path between the inlet and the outlet;
• a piston disposed within the valve body, the piston including:
• a first end;
• a second end;
• and
• a channel disposed between the first and second ends;
• wherein the piston is movable relative to the valve body transversely to the channel between:
• a first position in which the inlet is in fluid communication with the outlet via the flow path and the channel;
• and
• a second position in which the piston prevents fluid communication between the inlet and the outlet via the flow path by obstructing the flow path;
• and
• a heat-defeatable barrier that prevents movement of the piston to the second position.

A vehicle comprising:

• a tank configured to store pressurized fuel;
• a fill port configured to receive pressurized fuel for storage in the tank;
• and
• a safety valve disposed in fluid communication between the fill port and the tank, the safety valve having:
• a piston that is movable between:
• a first position in which the safety valve permits fluid communication between the fill port and the tank;
• and
• a second position in which the safety valve blocks fluid communication between the fill port and the tank;
• and
• a heat-defeatable barrier that prevents movement of the piston to the second position.