... to obtain1O2 —lO5 Pa high vacuum of the main vacuum equipment, which and valve, cold traps, pipe, mechanical pump and other ... metallurgical industry, the chemical industry, the radio industry, vacuum coating equipment, defense and aerospace industries, etc.Relevant technical parameters of diffusion ... -5 2.2 1.3 300 15 625X450750 KT-500 10000 8X10-5 9 5.5 500 100 860X650X1326 KT-600 ...