Welch Vacuum Pump

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Welch Vacuum Pump
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  • …operate and maintain Use Welch ® DryFast ® diaphragm vacuum pumps for tough applications requiring chemical resistance. DryFast’s Advanced Vapor Management controls vacuum for precise distillations using handy adjustment knob. Oil-free pumps are quiet and durable with PTFE…

  • …protect the pump and enhance vacuum levels. Do not operate continuously at pressures greater than 10 torr. DuoSeal two stage pumps provide deep vacuum (1 X 10-4 torr) at pumping speeds ranging from 25 to 650 L/min (0.9 to 23 CFM). DuoSeal single stage pumps provide economical vacuum to 0.015…

  • Compact, convenient Deep vacuum Use these Welch 2-stage direct drive pumps for a wide range of laboratory applications to provide deep vacuum down to 1 x 10-4 torr. Common lab processes include freeze drying, vacuum oven drying, glove box vacuum, centrifugal concentrator operation, and…

  • Affordable Model 2019 vacuum pump is durable and chemcial resistant. Use Model 2019 for vacuum filtration, desiccation, degassing, and other mid-range vacuum applications. Free air flow 37L/min; Maximum vacuum 24" Hg. Pump can also be used to pressurize up to 18 PSIG. Comes standard with…

  • Rugged GEM direct drive gear pumps provide versatile vacuum for applications requiring a broad range of vacuum level operating conditions. GEM pumps can operate continuously in the pressure range that rotary vane pumps can not: 10 torr up to atmospheric pressure; oil recycler 1416B is recommended…

  • …at shut-down to expell unwanted residue, extending the diaphragm life. Use with rotary evaporators up to 5 L capacity. A cold trap, such as Welch 1420H-14 (7893R90) is recommended when using this pump with centrifugal concentrators. Also recommended for use with vacuum ovens up to 28 L capacity.

  • …Adjustable Vacuum / Pressure Use these affordable oil-free pumps to provide convenient vacuum throughout the lab. Welch WOB-L piston pumps provide adjustable vacuum for filtration, SPE, vacuum ovens, and more. These pumps are an efficient alternative to water aspirators. Select vacuum range…

  • Standard Duty Handy Welch pump is perfect for basic lab vacuum operations. Dry or aqueous vapors only, portable, vacuum or pressure, 115V

  • … Schlenk line drying manifolds Vacuum ovens Freeze dryers up to 6 L Centrifugal concentrators Many other deep vacuum applications Save the time, expense, and hassle of oil-seal vacuum pumping with ChemStar Dry – a cutting edge product from Welch Vacuum Technology.

  • High contamination tolerance Ultimate vacuum <0.001 Torr Low RPM for long service life DuoSeal Vacuum Pumps are known for their ruggedness world-wide. These pumps have large oil reservoirs to dilute contaminants. Low pump rpm to reduces friction and wear while minimizing…

  • …within pump Internal surface protection on pump internals and PTFE coating on oil case slows chemical attack within pump. Gas ballast uses either outside air or dry inert gas to reduce condensable vapors from getting entrained in pump oil. Up to 10 dB quieter than competitive pumps

  • …cooler running and longer service life. ChemStar pumps rotate at speeds less than 580 RPM, compared with over 1700 RPM of direct-drive vacuum pumps. Dry Nitrogen Purge both degasses and cools the pump oil reducing the corrosion rate in the pump. Accessories (available on special order): Protective…

  • …solvent / acid resistance Use these durable dry diaphragm pumps to provide high flow, deep vacuum for your application. Welch Model 2052 pumps resist corrosive and solvent fumes to provide consistent vacuum levels. Quiet vacuum, low maintenance, and long life - friendly to your budget and…

  • High contamination tolerance Ultimate vacuum <0.001 Torr Low RPM for long service life DuoSeal Vacuum Pumps are known for their ruggedness world-wide. These pumps have large oil reservoirs to dilute contaminants. Low pump rpm to reduces friction and wear while minimizing…

  • High contamination tolerance Ultimate vacuum <0.001 Torr Low RPM for long service life DuoSeal Vacuum Pumps are known for their ruggedness world-wide. These pumps have large oil reservoirs to dilute contaminants. Low pump rpm to reduces friction and wear while minimizing…

  • Specifications are identical to the standard 1400B models. Explosion proof units are specialized to prevent sparking etc. that could ignite a flammable gas mixture in the room. These pumps have to be hard-wired in by an electrician. Please contact customer service for technical requirements.

  • …concentrators, & vacuum ovens. Achieve precise vacuum control for organic evaporations with Welch's Advanced Vapor Management (AVM). Choose from six dry PTFE vacuum pump models with flows up to 70 L / min and adjustable vacuum down to 2 Torr. Economical DryFastTM vacuum pumps are perfect for…

  • For all Welch Direct Drive Pumps

  • GEMINI® Dry Vacuum Pumps - Powerful Go-Anywhere Vacuum. Use in lab or field - Portable, Quiet. GEMINI pumps are DC powered – plug in to your vehicle or standard 115V outlet. Perfect for sampling, filtration, degassing, and other mid-vacuum applications. Advanced chemical resistance enables use with…

  • 1169A95: Inlet Separator Intake separator separates liquid phase aerosols from gas stream, reducing chemical contaminants in pump oil. 1169A97: Outlet Oil Mist Separator Outlet oil separator removes oil particles from exhaust stream, minimizing oil loss to atmosphere. 1169A98: Oil…

  • Filters trap exhaust oil mist and reduce pump noise. They are supplied with housing and replaceable filter.

  • DUOSEAL pump oil with low vapor pressure, ideal viscosity is recommended for use with DUOSEAL or any other belt-driven vacuum pump. No additives or inhibitors. Exhaust filters trap oil mist and reduce noise. Replaceable elements reduce maintenance costs.

  • …or organic vapors and gases. 1233K55 features a high flow (34 lpm), WOB-L piston pump. Vaccum is 27.2 Hg (70 Torr) and the unit has a 115V, 60 Hz power requirement. 1233K56 features a 28 lpm capacity, vacuum is 27.2 Hg (70 Torr) and the unit has a power requirement of 230V, 50 Hz. Unit is…

  • …dilutes contaminants ChemStar belt-driven Vacuum Pump is designed to tolerate harsh chemical contamination. Vital pump parts are corrosion resistant. The large oil reservoir with PTFE surfaces dilutes contamination and the low pump rotational speed lessens friction to reduce operating…

  • …1640 Vacuum Controller regulates you’re the vacuum level of your application - precisely, conveniently, and without using precious bench space. Vacuum level can be regulated from 2 Torr to atmospheric pressure, ±1 Torr. Use Model 1640 for fine control of rotary evaporation, vacuum ovens…

  • One piece stainless steel KF25/NW25 to 3/8" hose barb adapter for secure vacuum connection. Compatible with the Ai 2.5, 7.2 cfm and Welch 2.3 cfm vacuum pumps, offered by Across International.,/p>

  • …feature pressure capacity to 33 psig (3.3 x 105 pascal). 1233K57 has a pumping capacity of 11 lpm and vacuum to 21.3 Hg (292 mbar). Power requirement is 115V, 60 Hz. 1233K58 has a pumping capacity of 9.2 lpm and vacuum to 21.3 Hg (292 mbar). Power requirement is 230V, 50 Hz. Unit is supplied…

  • …dilutes contaminants ChemStar belt-driven Vacuum Pump is designed to tolerate harsh chemical contamination. Vital pump parts are corrosion resistant. The large oil reservoir with PTFE surfaces dilutes contamination and the low pump rotational speed lessens friction to reduce operating…

  • …gas and vapor applications regardless of the pump used. Oil is triple-distilled, severely hydrotreated oil designed to resist breakdown at the higher RPMs and operating temperatures of direct-drive vacuum pumps. Premium Oil enables Welch direct-drive vacuum pumps to maintain the highest performance.

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