Vacuum petrochemical knowledge refers to the use of mechanical, physical, chemical,gear type pump or physical and chemical methods have been drawn for container extraction and vacuum devices or equipment to obtain. The vacuum pump is in a closed space with a variety of improved methods of generating and maintaining the vacuum apparatus. By vacuum pump works, pumps can be divided into two types, namely gas pumps and gas transmission pump trap.
It is widely used in metallurgy, chemical industry, food, electronics and other industries coating.Censtar gas transfer pump ,external gear pump,hydraulic piston pump
