† Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China ‡ University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of ...

4. Thermal protector in the motor to guarantee the pump to run steadily. 5. Both 1/4' and 3/8' SAE flare inlet connections allow for flexibility of connections. 6. Vacuum pump oil included. 7.