Ключевые слова:
Gas-powered devices, Burners, Control devices, Safety devices, Control equipment, Cut-out devices, Safety valves, Controllers, Gas valves, Automatic, Manually-operated devices, Thermostats, Classification systems, Pipe fittings, Marking, Symbols, Performance, Durability, Torque, Force, Pressure switches, Leak tests, Torsion testing, Bend testing, Test equipment, Flow measurement, Scratch tests, Damp-heat tests, Endurance testing, Performance testing, Mechanical testing, Instructions for use