Fusible plug


  • Webster's Revised Unabridged Dictionary
    • Fusible plug (Steam Boiler) a piece of easily fusible alloy, placed in one of the sheets and intended to melt and blow off the steam in case of low water.
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In literature:

Fusible metal plugs useless as antidotes to explosions.
"A Catechism of the Steam Engine" by John Bourne
All the fusible plugs were in cartridges to prevent sparks from falling if the plugs burned out.
"Chicago's Awful Theater Horror" by Various

In news:

The PIGĀ® Latching Drum Lid with FM-Approved Fusible Plugs is designed for converting 55-gallon steel drum into a safe storage container for oil- or solvent- soaked materials.