alarm
apparatus
chain
connection
control
danger
ducts
emergency
engine
equipment
extinguish
extinguisher
factory
faucet
fighting
fire
firefighter
gas
heat
hydrant
industrial
industry
interior
light
manometer
measurement
metal
object
pipe
pipeline
piping
pressure
prevention
protect
protection
pump
red
safety
security
sprinkler
system
tap
tube
valve
warehouse
water