Welch high throughput PTFE Vacuum Pumps

Welch High Throughput PTFE Vacuum Pumps

Welch high throughput PTFE vacuum pumps are oil-free, chemical-duty diaphragm pumps designed for demanding laboratory and industrial applications involving aggressive solvents, acids, and vapors. With PTFE (Teflon) wetted parts and high flow rates, these pumps deliver reliable performance without oil contamination.

Why Choose Welch High Throughput PTFE Pumps?

Completely oil-free and dry operation — no oil mist or contamination
Excellent chemical resistance thanks to PTFE diaphragms and valves
High flow rates (up to 222 L/min) for faster process times
Quiet and low-vibration operation
Low maintenance and operating costs compared to oil-sealed pumps
Long diaphragm life with proper use

How These PTFE Diaphragm Pumps Work

These pumps use a series of diaphragms that move up and down to create vacuum. Because there is no oil in the pumping chamber, they are ideal for applications where oil backstreaming or contamination must be avoided. The PTFE material provides superior resistance to corrosive gases and vapors that would quickly damage standard pumps.

Key Advantages of High Throughput PTFE Design

Handles aggressive chemicals that destroy rotary vane pumps
No oil changes required — dramatically reduces maintenance
Cleaner vacuum for sensitive samples and processes
High pumping speed at both deep and rough vacuum levels
Environmentally friendly (no waste oil disposal)

Popular Welch High Throughput PTFE Models We Carry

2052 Series – Compact high-flow chemical duty pump
2054 Series – High capacity dry pump
2062 / 2064 Series – Balanced flow and vacuum performance
2067 Series – Highest flow (222 L/min) for large-scale applications
Titan4 Multi-Head Models – Maximum throughput for demanding processes

Best Applications

Rotary evaporation with aggressive solvents
Vacuum filtration and solid-phase extraction
Vacuum ovens and drying chambers
Degassing of corrosive liquids
Solvent recovery and distillation
Chemical synthesis and pharmaceutical research
Any process requiring oil-free, chemical-resistant vacuum

Maintenance Tips for Longevity

Inspect and replace diaphragms and valves every 6–12 months (depending on chemical exposure)
Use inlet and exhaust traps/filters when handling particulates
Keep the pump clean and dry when not in use
Run the pump periodically with gas ballast or air purge for corrosive applications

Chemtech Scientific is your authorized source for genuine Welch high throughput PTFE vacuum pumps, replacement parts, diaphragms, and full repair service.

Academic & Research Discounts Available — Contact us for special pricing on these chemical-duty pumps.