herald (plural heralds) 1  A messenger, especially one bringing important news. 2  A harbinger, giving signs of things to come. ( 3 heraldry) An official whose speciality is heraldry, especially one between the ranks of pursuivant and king-of-arms. ( entomology) A moth of the species Scoliopteryx libatrix.
a fire nozzle weighs approximately  ten to fifteen pounds.
What are the Main Parts of a Clean Agent Fire Suppression System? A clean agent fire suppression system begins with the detection devices and ends with the nozzles where the clean agent is released. From the detection of the fire to the releasing of the agent, there are numerous devices to make the whole system run efficiently.