alarm
assist
attack
city
connection
emergency
equipment
extinguish
fighting
fire
fire hydrant
firefighter
fireman
fittings
front
gauge
gear
help
hydrant
industrial
main
metal
metallic
municipal
nozzle
object
outdoor
pipe
pipeline
plug
plumbing
pressure
prevention
protection
public
pump
rescue
safety
security
service
source
steel
street
supply
system
urban
utility
valve
water