Ключевые слова: air, background, bar, boiler, closeup, compressed, connection, construction, control, energy, engineering, equipment, faucet, fittings, gauge, heat, home, industrial, industry, instrument, manometer, measurement, metal, meter, pipe, pipeline, plastic, plumbing, power, pressure, pump, red, repair, room, safety, steel, supply, system, technician, technology, tool, tube, up, valve, wall, water, white,