For dependable results: KNF gas and liquid pumps

Precision is the central requirement of instrumental analysis. As the long-time solutions provider for well-known manufacturers of devices for routine and high-end analysis, we are familiar with this requirement. We bring our entire expertise to the table to deliver you a technically suitable pump, and additionally create advantages that provide you with added value. Along the way, we take into account the ever-growing market demand for faster analytics, ease of operations and cost efficiency.

Every application is different and some are one of a kind. Our modular system is designed to give you a high degree of flexibility, speed and reliability. You can be sure that every gas and liquid pump supplied by KNF will exactly meet your requirements, no matter how complex or unusual these might be. This includes a broad range of accessories. We work closely with you to design customized project pumps that give you a competitve edge in your target market. From its configuration to its testing conditions and packaging as well as customized warehouse and logistics concepts - your project pump is tailored to your particular needs.

KNF offers a range of 70 series models designed for handling gases and liquids. The performances of these are described in our data sheets.

It is easy to tailor every series model to meet application-specific requirements by selecting and combining a variety of options. These range from the material used to make the pump components that come into contact with the media, to the drive and the mechanical elements such as the circuit points and connections. The configurations created by the KNF modular system are based on tried and tested individual components, meaning that developing customized pumps is quick and inexpensive.

We support your development project by providing you with sample pumps quickly and easily. In consultation with you, our employees from the sales, engineering, and product management divisions determine the modifications to be made to the product’s standard technical parameters.

These tasks are handled by our gas and liquid pumps:

  • Sample preparation
  • Transfer of liquid an gaseous samples for analysis
  • Disposal of sample waste
  • Degassing
  • Evacuating the analysis cell
  • Pre-vacuum for mass spectrometry

Diaphragm vacuum pump N 816

reliable degassing and disposal of liquid sample waste

  • Chemically resistant and humidity resistant
  • Above-average flow rate
  • Select from among AC and two brushless DC motors

Diaphragm liquid pump FF 12 & FF 20

Up to 20,000 hours of maintenance-free operation



  • Developed for systems used to supply and prepare liquid samples for analysis
  • The number of sealing points has been reduced to a minimum and the pump head parts are welded to ensure maximum security
  • In the model featuring a brushless DC motor with IP 54 protection, the flow rate can be varied in accordance with the process requirements