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Company Profile
Welch, a Gardner Denver product
Welch is a provider of vacuum pumps and systems. Products include vacuum belt-drive and direct-drive vacuum pumps, dry (oil-free/oil-less) PTFE diaphragm pumps and dry piston pumps as well as controlled vacuum-induced evaporation auto-sensing PTFE diaphragm pump systems.
Company Info
- Website
- welchvacuum.com
- Phone
- 847-676-8800
- Fax
- 847-677-8606
- Address
-
5621 W. Howard Street
Niles, IL 60714
Entries
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in Diaphragm Vacuum Pumps
Solid PTFE diaphragm pumps are available for chemical duty through Welch. The company features the Dryfast Collegiate, Dryfast, and Dryfast Ultra Series, with a cumulative CFM range of 0.9 to 1.2, and Torr range from 2 to 40. These products can be used for applications like evaporation, filtration, vacuum ovens, rotary evaporation and distillation, concentrators, gel dryers, and pumping harsh vapors and gases.
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in Direct Drive Pumps
Welch compact direct-drive vacuum pumps are designed for vacuum ovens, centrifugal concentrators, freeze dryers and are available in compact, GEM, Medium and Large models with flows up to 11.3 CFM.
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in Dry/Oilless Vacuum Pumps
Welch supplies dry PTFE diaphragm pumps and WOB-L piston pups for various application needs. Diaphragm lines include the Dryfast Collegiate, Dryfast, and Dryfast Ultra pumps for chemical duty, such as evaporation, filtration, vacuum ovens, and more. These solid PTFE units offer CFM from 0.9 to 2.5. With respect to piston pumps, the WOB-L line is available in three sizes (22, 34, or 45 l/min), for non-corrosive duties such as aspiration, desiccation, vacuum drying, and chamber roughing. Vacuum goes up to 60 Torr, while pressure can be as much as 100 psi.
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in Vacuum Pumps
Welch offers vacuum pumps in belt drive, direct drive, dry PTFE diaphragm and dry WOB-L piston designs. DUOSEAL line of belt-drive high vacuum pumps feature low RPM, fast pump down, and large oil reservoir dilutes contaminants in two stage, small, large, single stage and two stage refrigeration types. Direct drive vacuum pumps of compact, GEM, medium, and large types are ideal for harsh chemical, laboratory applications. Dry PTFE diaphragm, vacuum pumps are suited for evaporation, filtration, vacuum ovens, rotary evaporation/distillation, concentrators, gel dryers and harsh vapors and gases. Dry WOB-L pumps feature three sizes of 22 L/min, 34 L/min, and 45 L/min, no water or oil, inlet water trap, muffler, and vacuum adn pressure regulators and gauges.