Self-Cleaning Dry Vacuum System

  • Complete oil-free vacuum system for rotary evaporators
  • Self-cleaning purge extends diaphragm life
  • Integral vacuum regulator
  • Complete system includes inlet and outlet separators
  • Boiling point below 100°C—ideal for stripping volatile solvents
This two-stage flexible diaphragm pump resists aggressive vapors and the build-up of solid residue or liquids on the diaphragm. A glass inlet separator traps liquids and particulates present in the vapor before it enters the pump. Simply adjust the gas ballast or vent switch to inhibit vapor condensation inside the pump heads when pumping heavy vapor loads.
When you turn off the pump, the self-cleaning purge runs for 2 minutes, expelling any condensed solvent vapors into the outlet separator. A conveniently located vacuum level regulator inhibits sample bumping or foaming.
What’s included: glass inlet and outlet separators with ¼" barbed fittings, an applications booklet, and 7 ½-ft cord with plug (the 115 VAC models have a U.S. standard plug; 230 VAC models have a European standard plug.)
$3,996.00 - $4,996.00USD / Each

4 variations of this product are available.

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Max Vacuum (in Hg) Power (VAC)
Availability Pricing
Welch 202501 Self-cleaning dry vacuum system, 115 VAC EW-79205-30 Mfr # 202501
COMPARE
29.6 115
$3,996.00USD / Each
Welch 202503 Self-cleaning dry vacuum system, 230 VAC EW-79205-35 Mfr # 202503
COMPARE
29.6 230
$3,996.00USD / Each
Welch 202701 2-torr, digital Self-cleaning dry vacuum system, 115 VAC EW-79205-80 Mfr # 202701
COMPARE
29.85 115
$4,996.00USD / Each
Welch 202703 2-torr, digital, self-cleaning dry vacuum system, 230 VAC EW-79205-85 Mfr # 202703
COMPARE
29.85 230
$4,996.00USD / Each
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