An ultimate pressure of 4 x 10”^2 Torr was reached in a locally made SUS304 stainless steel vacuum chamber. Ion pump, titanium sublimation pump and non-evaporable getter pump were used in the system. The pumping and outgassing effects of the pumps were studied. The pumping effect of gauages and a Ti-ball during preheating procedures were observed. Outgassing during bakeout and after pumps off were also studied in this work.