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.
Where 100 psi was the standard, about a third of our business now is in the lower-pressure nozzles that operate at 50 psi or 75 psi.. Advantages of lower-pressure nozzles, Carringer pointed out, include lower engine pressures as well as less nozzle reaction on fire crews at the end of the hose line.