Welch 2034B-01 DryFast Ultra Vacuum Pump | Chemical-Resistant, Oil-Free – 1.1 Torr, 35 L/min (115V)

High-performance chemical-duty diaphragm vacuum pump with PTFE flow path. Oil-free and corrosion-resistant. Delivers 1.1 Torr ultimate vacuum and 35 L/min flow.

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Description

The Welch DryFast Ultra 2034B-01 is a premium chemical-duty vacuum pump designed for modern laboratories requiring oil-free, chemically resistant performance. Built with an all-PTFE wetted flow path, the 2034B-01 resists corrosion from harsh acids, solvents, and aggressive vapors—ensuring durability and clean vacuum output without contamination.

This powerful diaphragm pump achieves an ultimate vacuum of 1.1 Torr and a free air capacity of 35 liters per minute, making it ideal for rotary evaporation, vacuum concentration, gel drying, filtration, and sample preparation.

Key Features

  • Ultimate vacuum: 1.1 Torr, flow rate: 35 L/min
  • PTFE-coated wetted surfaces for corrosion resistance
  • Oil-free operation – no contamination, low maintenance
  • Ideal for rotary evaporation, filtration, concentration, gel drying
  • Compact and quiet – ideal for fume hoods or benchtop setups
  • Compatible with aggressive solvents, acids, and vapors
  • Extended diaphragm lifespan for reduced downtime
  • 115V, 60 Hz, single-phase operation

Specifications Table

Specification Welch 2034B-01 DryFast Ultra
Pump Type Diaphragm (Oil-Free, Chemical-Resistant)
Ultimate Vacuum 1.1 Torr
Free Air Displacement 35 L/min
Wetted Materials PTFE
Noise Level Low (~50 dB)
Voltage 115V / 60 Hz / 1 Phase
Cooling Air-cooled
Typical Applications Rotary Evaporation, Filtration, Gel Drying, Solvent Removal

Additional information

Weight 25 lbs
Dimensions 21 × 14 × 15 in

Brand

Welch

Welch provides state-of-the-art vacuum pumps for numerous applications in chemical and biological laboratories, as well as for high vacuum manufacturing, air-conditioning and refrigeration.