We typically have used and reconditioned pumps in stock from leading manufacturers like Cole-Palmer and Watson/Marlow.
The KNF LABOPORT N840.3FTP two-stage diaphragm vacuum pump is suitable for use with concentrators, rotary evaporators, and distillation equipment (sold separately). The pump has a 34 liters per minute (LPM) free air capacity with vacuum to 8 Torr and its polytetrafluoroethylene (PTFE) air flow path is corrosion resistant. The oil-free diaphragm pump allows operation without oil misting and contaminated oil disposal. The pump accepts 115V, 60 Hz input power.
KNF Neuberger, a division of KNF Group, manufactures diaphragm pumps and systems for gases, vapors, and liquids for laboratory and manufacturing applications. The company, founded in 1977, is headquartered in Trenton, NJ.
Flow rate at atm. pressure: 20L/min
Ultimate vacuum: 8 mbar
Operating pressure: 14.5 psig
Connectors for tube: 3/8 in
Permissible media and ambient temperature: +5 … +40 °C
Achieve maximum solute recovery with the Thermo Scientific™ Deep Vacuum Oil Pumps for Vacuum Concentrators, designed to work with all Thermo Scientific™ SpeedVac™ concentrating and freeze drying systems.