Ключевые слова:
Valves|Thermal testing|Scratch tests|Thermal-cycling tests|Bend testing|Performance|Marking|Mechanically-operated devices|Flow regulators|Gas-powered devices|Performance testing|Gas valves|Controllers|Torsion testing|Flow rates|Design|Chemical-resistance tests|Testing conditions|Control equipment|Pipe fittings|Thermostats|Temperature controllers|Instructions for use|Test equipment|Grades (quality)