Working Pressure Ranges For All Types Of Vacuum Pumps

The working pressure range for vacuum pumps depends on the type of pump and its design. Here are the typical working pressure ranges for some common types of vacuum pumps:

1. Rotary Vane Pump: These pumps typically have a working pressure range of 10^-3 to 10^-9 torr. However, their ultimate pressure is limited by the vapor pressure of the sealing oil.
2. Diaphragm Pump: These pumps are commonly used for laboratory applications and have a working pressure range of 10^-3 to 1 torr.
3. Roots Blower: These pumps are used for rough vacuum applications and have a working pressure range of 1 to 10^-2 torr.
4. Scroll Pump: These pumps have a working pressure range of 10^-2 to 10^-4 torr and are commonly used in semiconductor and analytical instrument applications.
5. Turbo Pump: These pumps are used in high vacuum applications and have a working pressure range of 10^-7 to 10^-10 torr.
6. Ion Pump: These pumps are used in ultra-high vacuum applications and have a working pressure range of 10^-11 to 10^-12 torr.

It is important to note that these pressure ranges are general guidelines, and the actual working pressure range of a vacuum pump can vary depending on its design, age, and maintenance history.