air
apartment
central
check
checking
close up
control
detect
detection
detector
device
electric
energy
engineer
equipment
gas
gauge
heat
heating
home
house
indicator
inspect
inspection
installation
leaks
maintenance
male
man
manometer
measurement
monitor
pipes
plumber
plumbing
power
pressure
radiator
renovate
renovation
safety
specialist
system
temperature
test
tightness
tool
vertical
worker
定額
Close up of bearded man filling pipes with pressurized air to inspect for leaks in new installation. Worker using manometer, checking gas tightness of heating system. Concept of gas tightness testing.の素材 [FY310162484759]
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