aquatic
bathroom
bolt
brass
chrome
close
connection
control
controller
copper
device
engineering
equipment
faucet
flowing
gas
gasoline
gate
handle
household
industry
installing
isolated
liquid
metal
nut
off
open
pipe
pipeline
plumber
power
pressure
regulate
regulator
safety
service
shiny
shut
stopcock
system
tap
technical
tool
tube
turning
valve
water
white