| Vacuum pumps are used to pump gases out of | | | | rocking piston, and rotary vane pumps can go up |
| an area, leaving a partial vacuum. The vacuum | | | | to twenty-nine in Hg. Rubber and plastic-sealed |
| pump was invented by the German named Otto | | | | piston pumps, venture vacuum pump, and scroll |
| von Guericke. | | | | pumps are also used. |
| The flow of air removal, the amount of vacuum | | | | Many industrial and scientific processes require |
| produced, and the power that is required to | | | | vacuum-pump applications such as for the |
| produce the vacuum are the main factors that go | | | | production of electric lamps, vacuum tubes, |
| into choosing particular vacuum pumps. It is | | | | semiconductor processes, lectron microscopy, and |
| mandatory for manufacturers to provide | | | | medical processes involving suction. Aerospace |
| information on the flow-rating availability. Standard | | | | applications include the use of vacuum source to |
| measurements are in place to quantify how much | | | | power gyroscopes in the various flight |
| vacuum a pump produces. This is called mmHg or | | | | instruments. |
| HG. A lower vacuum provides high-flow pumps | | | | In the case of a complete electrical failure, special |
| and a higher vacuum provides low-flow ones. | | | | instruments in the instrument panel powered by |
| Vacuum pumps have much lower power | | | | the vacuum source are used. Standard features |
| requirements than air compressors. Large-sized | | | | include high-vacuum electric motor shutdown, |
| vacuum pumps are meant for continuous | | | | clutch-driven high-pressure pump, trigger gun |
| pumping. However, smaller pumps have high | | | | control, automatic waste-water pump-out, |
| efficiency; the only difficulty, however, is that | | | | low-water shut down, pressure-relief valve, waste |
| they get overheated easily if used continuously. A | | | | collection bag filter, emergency stop button, hour |
| single mechanism or a series of mechanisms or | | | | meter and warranty for one year. |
| parallel mechanisms are employed to achieve the | | | | There are one-step systems that pressure-wash, |
| best results according to specific requirements. | | | | rinse, and recover the waste stream for proper |
| Various types of vacuum pumps are available | | | | treatment. The clean-and-capture system has |
| such as diaphragm, rocking piston, reciprocating | | | | been found to be good for undertaking |
| piston, liquid ring, rotary-screw, rotary vane and | | | | high-paying and environmentally sensitive jobs. |
| lobed-rotor ones. Reciprocating piston, diaphragm, | | | | |