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 |





