Diaphragm vacuum pumps for high suction power.

These dry, oil-free vacuum pumps employ the latest KNF Neuberger diaphragm stabilization technology. They are an excellent companion for laboratory appliances requiring a deeper vacuum source for pumping slightly aggressive or corrosive gases and vapors.

Shown at right is KNF's N920 series pump. It features excellent pumping speed at low vacuum levels using KNF's diaphragm stabilization system. In addition, interconnections are an integral part of the unique three-stage head to improve leak-tightness.
Available with a universal (90-264VAC, 50-60Hz) AC motor or a brushless-DC motor, both are supplied with integrated logic speed controls. It is gas tight to 6x10-3 mbar x l/s specifications. Ultimate vacuum is <1.5 mbar. It is also available as an OEM model.

Model N920AP.29.18 three-stage pump features adjustable flow.

Need a compact, lightweight pump for small tasks?

These convenient KNF filtration pumps are oil-free, lightweight and easy to use for your disposable bottletop and flask filtration, vacuum manifold, blotting and desiccation applications. Stop polluting drinking water and replace that water aspirator now.

Compatible with ALL brands of rotary evaporators

Consider a KNF LABOPORT® PTFE pump for quiet, reliable operation without the messy handling of pump oil or the expense of water aspirators. They are the perfect replacement for rotary vane pumps in applications where a variety of corrosive vapors may be encountered.

For LABOPORT® PTFE Datasheets, click on the model number.

LABOPORT® pumps are the perfect companion for any brand of rotary evaporator.
Model UN842.3FTP shown above.

Self-Cleaning Vacuum Pumps for Saturated Vapors

Use with gel dryers, vacuum ovens, vacuum concentrators and even rotary evaporators.

Because insufficient air flow cannot push liquids thru the pump, vapors condense and accumulate within a vacuum pump's heads. This reduces pump efficiency and extends process time.
How it works: The timed Powerdry® valve meters a burst of ambient air into the pump. This sudden flow of air expels liquids out of the pump heads, immediately restoring efficiency. Your vacuum levels are unaffected.
Unlike other self-cleaning pumps that cycle at the end of the vacuum process, PowerDry® operates throughout the process, when you need it most.

Model UN820.3FT.40P PowerDry equipped pump.

Vacuum pumps and compressors for the lab

These dry, oil-free vacuum pumps are an excellent companion for most laboratory appliances requiring a moderate vacuum source or for applying pressure.

The model UN035 single head and parallel head pumps are excellent for higher pressure applications such as gas transfer or circulation. They are available in aluminum, 316 stainless steel, and PVDF/PTFE versions, and are resistant to most gases found in the laboratory. Consult corrosion resistance charts for compatibility.
Single and parallel head units feature high flow and high output pressure and are well suited for the transfer of gases. Use the two or three-stage pumps for deeper end vacuum performance.

Models UN726FTP and UN035.3STP (shown above)
are designed for handling corrosive vapors.

Economical Vacuum pumps and compressors for the lab

These dry, oil-free vacuum pumps are an excellent companion for most laboratory appliances requiring a deep vacuum source or for applying up to 20 psig pressure.

The single head and parallel head pumps are excellent for highly corrosive applications such as rotary evaporators. They are available in full PTFE versions, and are resistant to most gases found in the laboratory. Consult corrosion resistance charts for compatibility.
Parallel head units feature high flow and are well suited for the transfer of gases. Use the two-stage pumps for deeper end vacuum performance.

Models UN726FTP and UN726.3FTP (shown above) have
Full-PTFE wetted materials, designed for handling corrosive vapors.