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Welch™ Welch™ ChemStar™ Dry Deep Vacuum System

Oil-free deep vacuum performance

Manufacturer:  Welch™ 2070B01

Catalog No. 12-584-508

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ChemStar Dry deep vacuum system handles harsh chemical applications with ease – and no oil mess. Achieve deep vacuum to 50 millitorr, with high flow of 150L/min at 2 torr– perfect for many demanding evaporative processes.


  • Wetted surfaces chemically resistant
  • Oil-free dry vacuum technology
  • Pumps high vapor loads of solvents or corrosive wet chemistries
  • Cold-trapping not required for select applications
  • Programmed blower/diaphragm pumping system optimization (patent pending)
  • Self-cleaning forcontamination-free surfaces
  • Quiet, low vibration system free of oil fumes


  • Pumps vapors that would compromise oil-seal pumps - solvents, acids, etc.
  • No oil maintenance/disposal, no sample contamination from oil or particulates
  • Achieves top pumping speed at the optimal working vacuum level for most evaporations
  • Ends dry ice trapping expense and effort for many processes
  • Coordinated blower system electronically adjusts to vapor load for fast, deep vacuum and efficient evaporative performance
  • Self-cleaningmaintains consistent performance and extends maintenance intervals
  • Fits into lab environment
  • Schlenk line drying manifolds, no cold trap required
  • Freeze drying – to 6.5L, no cold trap required
  • Vacuum ovens – to 5 ft.3, cold trap required for select applications
  • Concentrators – multiple units in parallel, cold trap required for select applications

Warranty and Services

1 year



0.05 torr
115V cord set, NW25 to 7/16 in. hose adapter, NW25 centering ring/hinge clamp
45.7 x 22.8 x 48.2 cm (18 x 9 x 19 in.)
50 lb.
150 L/min.
ChemStar Dry Deep Vacuum System
3.0 A
115 V 60 Hz 1 ph
22.6 kg
Vacuum manifolds/Schlenk lines, Freeze dryers, Vacuum ovens, Centrifugal concentrators, Volume evacuation
Product Certifications
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