High vacuum lines and valves should be designed in accordance with the nominal pumping speed of the high vacuum pump. Otherwise, there will be considerable losses in the effective pumping speed due to ...

[Nurdrage] puts out a lot of neat videos, mostly about home chemistry. For the home chemist it is occasionally desirable to pull a vacuum. For example, a potentially dangerous chemical can be boiled ...

Any time the internal piping or components of a refrigeration system are exposed to atmospheric air, they must be completely evacuated before refrigerant can be added into the system. Proper ...