Ключевые слова: air, background, bottle, butane, compressed, container, control, cylinder, danger, dangerous, energy, equipment, factory, fire, flammable, fuel, gas, gauge, heavy, hose, industrial, industry, instrument, isolated, liquid, lpg, machine, manometer, metal, natural, object, oxygen, pipe, power, pressure, propane, red, refill, regulator, safety, steel, storage, system, tank, technology, tool, tube, valve, water,