Most vacuum pump hardware is made from stainless steel or aluminum because of those materials’ strength and gas non-permeability. Read More…
Leading Manufacturers
DEKKER Vacuum Technologies, Inc.
Michigan City, IN | 888-925-5444As an industry leader with over 50 years of experience providing the best vacuum pump solution for customers, DEKKER is an ISO 9001:2015 certified company that delivers superior products & service. Our custom engineered systems meet even the most demanding applications, from aeronautical to waste water & everything in between. Call DEKKER today with any questions or check out our helpful website!
Pfeiffer Vacuum, Inc.
Nashua, NH | 800-248-8254Today’s superior cutting edge vacuum pump products, offering reliability and high performance. Pfeiffer Vacuum is an intentional manufacturer and leading innovator of the Turbopump for high to ultra-high vacuum range. Plus, Rotary Vane Pumps, Dry Pumps, Roots pumps, Screw Pumps, Leak Detectors and more. Contact us for the best products and support available.
Duniway Stockroom Corp.
Fremont, CA | 650-969-8811Since 1976, Duniway Stockroom Corporation has offered new and used vacuum equipment. We provide hardware, valves, ion pumps, diffusion pumps, mechanical pumps, turbo pumps, vacuums sensors, gauge controls, supplies and more. We offer rebuilding services and superior customer service. For more information, check our website today!
Edson International, Pump Division
New Bedford, MA | 508-995-9711Edson offers innovative vacuum pump systems for the collection and transfer of liquids and liquids with suspended solids for marine, industrial, municipal and wastewater applications. Our products include diaphragm vacuum pumps, industrial vacuum pumps, heavy-duty vacuum pumps and much more.
Vacuum Pump Systems - Vac-Tech, Inc.A perfect vacuum is a space in which no matter is present. No perfect vacuum exists in reality, and no machinery can create one. But industrial vacuum pumps can achieve varying degrees of artificial evacuation for uses in many industries and applications.
Low vacuums, which are partial vacuums with relatively high levels of residual atmosphere, can be created by small vacuum pumps for light industrial tasks. Many light bulbs, for example, must be partially evacuated or filled with an inert gas in order to function.
For many other applications, though, higher degrees of evacuation are necessary. In laboratory applications, high-tech electronics fabrication and some contexts in the healthcare industry, vacuums with very low levels of atmospheric pressure can be necessary. High and ultra high vacuums are necessary for creating these kinds of vacuums, and in some cases, a series of vacuum pumps may be connected to the same inlet line.
There are three main categories of vacuum pumps: positive displacement, momentum transfer and entrapment pumps.
Positive displacement pumps expand one part of a vacuum chamber while collapsing another; this compresses the gas inside and causes it to be evacuated. Momentum transfer pumps facilitate repeated collisions between gas molecules and rotors or steam jets that impart momentum and direct the molecules out of the chamber.
Entrapment pumps use condensation created by rapid heating and cooling to compress and trap gas molecules in a solid or absorbed state. Each pump variety can be used in conjunction with another to create vacuums of varying pressure levels. For example, a positive displacement pump, an absorption pump and a momentum transfer pump could be used to bring pressure down from 760 Torr to as low as 10 Torr (1 Torr is equal to the fluid pressure exerted by 1 mm of mercury at sea level).
Within those three vacuum pump categories, all vacuum pumps can be categorized as either wet or dry. If the vacuum uses oil for lubrication or a ring of liquid sealant, that system is considered to be a wet system. Dry vacuum pumps are systems that make no use of any liquids at any time.
