boiler

building

construction

control

device

dial

energy

engineering

equipment

factory

faucet

fuel

gas

gauge

heat

hydraulic

indicator

industrial

industry

instrument

line

machine

manometer

manufacturing

measure

measurement

measuring

metal

meter

oil

part

pipe

pipeline

plant

plumber

plumbing

power

pressure

pump

red

service

steam

steel

system

technology

tool

tube

valve

vessel

water