Vacuum is a relative condition, normally referring to a lower pressure than atmospheric in any given confined volume.
A vacuum pump is defined as a pump that removes a gas from a sealed volume in order to leave behind a partial vacuum. A vacuum pump can be visualised as a compressor running with the inlet attached to the vacuum system and the outlet attached to the exhaust.
Pumps can be broadly grouped into four main categories
Positive displacement pumps
Non-positive displacement pumps
Molecular pumps
Entrapment pumps
-see also:
"Vacuum" is in the NAICS Code "335212"
(Household Vacuum Cleaner ManufacturingVacuum cleaners (e.g., canister, handheld, upright) household-type electric, manufacturing)
"Vacuum" is in the HS Code "8414.10"
- - Vacuum pumps
"Vacuum" is in the UNSPSC Code "27131608"
Vacuum cups or pads
Vacuum means void, emptiness, vacuity; space that is empty of matter. Vacuum refers to : (1) Space devoid of atoms or molecules and (2) Emptying of air. It is also a term for an electrical device which cleans surfaces by creating air suction
-see also:
"Vacuum" is in the NAICS Code "335212"
(Household Vacuum Cleaner ManufacturingVacuum cleaners and sweepers, household-type electric, manufacturing)
"Vacuum" is in the HS Code "7012"
Glass Inners For Vacuum Flasks Or For Other Vacuum Vessels.
"Vacuum" is in the UNSPSC Code "23151508"
Vacuum molding machines
Other Database Pages Exist for this Phrase:
Canister vacuum (Canister vacuum works best on hard surfaces or ...)
Vacuum fermentation (Vacuum fermentation is described as a process of ...)
Handheld vacuum (Handheld vacuums are machines which are portable ...)
Vacuum bag (Vacuum bag is identified as the bag attached to ...)
Upright vacuum (Upright vacuum refers to a kind of vacuum that is ...)
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