KNF
  • Offer Profile
  • KNF develops, produces and distributes high-quality diaphragm pumps and systems for gases, vapors and liquids. They are available as built-in pumps for OEM use as well as for process applications and laboratory use. The independent KNF Group comprises 16 companies and five production sites worldwide.
Product Portfolio
  • OEM Pumps

  • KNF gas pumps transfer and compress gases and vapors and generate vacuums without contaminating the media.
    • Comprehensive range of standard pumps for gases, vapors and liquids
    • Modified standard pumps for custom solutions
    • Over 50 years of experience in diaphragm pump technology and in the OEM markets
      • Diaphragm Gas Pumps

      • KNF offers a large selection of diaphragm pumps for sampling, evacuating and compressing applications. All pump types are based on the same working principle of an oscillating diaphragm inside the pump head offering oil-free, uncontaminated and maintenance-free operation.
          • Micro pumps

          • KNF micro-diaphragm gas-sampling pumps are extremely compact with patented technology that guarantees high performance. DC motors of variously rated voltages are available. These pumps are often used in analytical instruments and medical technology.
          • Vacuum pumps and compressors

          • This category consists of pumps for neutral and mildly aggressive or corrosive gases and vapors. These pumps are extremely popular thanks to the wide range of models and characteristics available.
          • Chemically resistant pumps

          • KNF’s range of chemically resistant pumps is designed for aggressive gases and vapors and suitable for universal application. Whether you need to transfer or compress media or to generate vacuums, there is a pump type in this category with the right pneumatic characteristics for the task.
          • Temperature-resistant and heated pumps

          • Temperature-resistant pumps can transfer air as well as neutral or aggressive gases at temperatures up to 240 °C. In order to prevent condensation of the measuring gas, the heated head pump types possess temperature-resistant pump head components and optional thermostatic or electronic temperature control.
          • Explosion proof pumps

          • Explosion-proof pumps are designed to prevent internal or external explosions by enclosing parts that could ignite either the transfer media or the surrounding atmosphere. KNF supplies a range of explosion-proof pumps for use in potentially explosive atmospheres. All our pumps are ATEX-compliant and certified in accordance with the 94/9/EC directive on equipment and protective systems.
          • Double diaphragm pumps

          • KNF double diaphragm pumps offer a high level of performance and greatly enhance safety, especially when working with dangerous, rare and valuable gases. A second diaphragm is located underneath the working diaphragm. The safety diaphragm has a significantly longer service life than the working diaphragm, thus ensuring that no gas can escape into the environment even if the working diaphragm ruptures.
        • Micro Gas Pumps

        •  KNF micro-diaphragm gas-sampling pumps are extremely compact with patented technology that guarantees high performance. DC motors of variously rated voltages are available. These pumps are often used in analytical instruments and medical technology.
            • Micro Diaphragm Gas Pumps

            • KNF micro-diaphragm gas-sampling pumps are extremely compact with patented technology that guarantees high performance. DC motors of variously rated voltages are available. These pumps are often used in analytical instruments and medical technology.
            • Micro Piston Gas Pumps

            • Swing-piston compressors produce oil-free compressed air and vacuum. They evacuate, transfer and compress air without contamination. The KNF swing-piston system offers a higher flow rate than the corresponding diaphragm pumps of the same dimensions.
          • Swing-piston pumps

                • Swing-piston pumps

                • Swing-piston compressors produce oil-free compressed air and vacuum. They evacuate, transfer and compress air without contamination. The KNF swing-piston system offers a higher flow rate than the corresponding diaphragm pumps of the same dimensions.
            • Diaphragm Liquid Pumps

                  • Liquid Pumps

                  • The NF series of transfer pumps combine maximum performance with minimum size. The use of chemically resistant materials enables the pumps to convey virtually any type of liquid, whether neutral or corrosive. They are dry-running, self-priming and maintenance free.
              • Dosing Pumps

              • KNF offers a range of diaphragm-metering pumps to dose liquids in the milliliter and microliter range. These pumps are characterized by outstanding precision and consistent performance, long service lives and low maintenance requirements. The various materials available for the components in contact with the media permit the dosing of neutral, aggressive and corrosive liquids.
                  • Solenoid operated

                  • The FMM range of solenoid-powered diaphragm-dosing pumps allows easy dosing in the microliter range. By manually adjusting the stroke length, it is possible to alter the single dispense volume and calibrate the pump to fit the system The pump frequency can then be modified to control the flow rate.
                  • Stepper motor-driven

                  • Our FEM dosing pumps are based on a very simple design. The stepper motor causes a cam to rotate and this, in turn, moves the diaphragm up and down. This vertical movement causes pressure changes in the pump chamber which, combined with the operation of the inlet and outlet valves, produce the pump action.
                • Solenoid Diaphragm Dosing Pumps

                      • Solenoid dosing pumps

                      • The FMM range of solenoid-powered diaphragm dosing pumps allows simple dosing in the microliter range. By manually adjusting the stroke length, it is possible to modify the dispensed volume and calibrate the dosing pump to fit the system. The pump frequency can then be modified to control the flow rate.
                  • Laboratory Equipment

                  • KNF lab pumps, systems and rotary evaporators are used for a wide variety of benchtop laboratory applications where accuracy and chemical resistance are required.
                    • Comprehensive range of laboratory vacuum and transfer pumps as well as compressors for gases and vapors
                    • Extensive range of liquid pumps and metering pumps for laboratory use
                    • Variety of vacuum pump systems
                    • Chemically-resistant versions in each category for universal use
                      • Rotary Evaporator

                          • Rotary Evaporator RC 600

                          • The RC 600 has been specifically developed to meet the needs and demands of university and education facilities. A constant turnover of students calls for robust laboratory devices that are quickly understood. They must be designed to withstand continuous intensive use while unfailingly meeting the unique safety requirements of training labs.
                          • Rotary Evaporator RC 900

                          • Designed for every use, and tailored to practical needs. The RC 900 makes rotary evaporation far simpler and safer. Reliability, operational safety and precision come as standard with the RC 900.
                        • Diaphragm Vacuum Pumps

                            • Vacuum Pumps

                            • Diaphragm vacuum pumps and compressors are dry-running devices used in a wide range of laboratory applications. They transfer, compress and evacuate different types of air, gases and vapors without contamination. The pumps are used for various laboratory applications such as vacuum distillation, multiflask filtration and gel drying.
                            • Chemical Resistant Vacuum Pumps

                            • KNF LABOPORT® is the name of our chemically resistant diaphragm vacuum pump line for aggressive media. These pumps can be used to transfer and evacuate almost all laboratory gases and vapors. They are characterized in particular by the use of resistant materials such as all-round PTFE for the pump head, FFPM for the valves, and KNF's structured diaphragm with a PTFE coating.
                            • Chemical Resistant Vacuum Pumps for Moist Gases

                            • KNF LABOPORT® SD is the name of our chemically resistant diaphragm vacuum pumps with integrated self-drying system. These pumps offer all the advantages of our chemically resistant range combined with an automatic self-drying system to prevent the accumulation of condensates in applications involving wet gases, for example in vacuum drying chambers. The condensate is blown out of the pump heads at regular, user-defined intervals while the vacuum in the receptacle is maintained. The key benefits are increased effective suction speed and extended service lives in wet gas application conditions.
                          • Vacuum Pump Systems

                          • KNF vacuum pump systems are extremely convenient, easy-to-use, chemically resistant devices for vacuum generation in laboratory applications. KNF offers a range of product options to meet different customer requirements.
                              • System SR

                              • Pump system with separator on inlet and outlet side
                              • System SH

                              • Pump system with separator on inlet and high-performance condenser on outlet side.
                              • System SEM

                              • Manually controlled pump system with vacuum gauge and separator on inlet and high-performance condenser on outlet side.
                              • System SC

                              • Highly accurate and electronically controlled pump system with self-explaining touch screen operation, remote control function, separator on inlet and high performance condenser on outlet side.
                              • System SCC

                              • Pump system with two independent controllers for two separate applications with separator on inlet and high-performance condenser on outlet side.
                              • Multi-User System SBC

                              • A fully-automatic, compact and chemically resistant centralized vacuum station to generate vacuums for multiple users. The unit switches off automatically when no vacuum is required. Various kinds of vacuum supply points with non-return valves, piping and connections are available.
                            • Vacuum Controller

                                  • Vacuum Controller VC 900

                                  • The new vacuum controller VC 900 makes your application more reliable and safe.
                              • Chiller

                                    • Chiller C 900

                                    • The chiller is characterised by its compact design and the small footprint. The easy filling of the unit combined with splash-water proofed membrane keyboard are further benefits simplify the daily work.
                                • Diaphragm Liquid Transfer Pumps

                                      • Transfer Pumps

                                      • With its LIQUIPORT series, KNF can offer a range of easy-to-use laboratory transfer pumps. The use of chemically resistant materials such as PTFE, FFPM, PVDF, etc. enables the pumps to convey virtually any type of liquid. They are dry-running, self-priming and maintenance-free.
                                  • Diaphragm Liquid Dosing Pumps

                                        • Dosing Pumps

                                        • With its SIMDOS series, KNF offers dosing pumps for laboratory use. They are the ideal solution for accurate, reliable and stable dosing applications. They are small, quiet, dry-running, self-priming and maintenance-free.
                                    • Process Pump

                                      • Chemically-resistant pumps
                                      • Heated and temperature-resistant pumps
                                      • ATEX-certified pumps for potentially explosive atmospheres
                                      • Double diaphragm pumps
                                        • Diaphragm Gas Pumps and Compressors

                                        • Sampling, evacuating and compressing – for tasks like these, KNF offers a wide range of diaphragm pumps and model variants. All the pump types offer media transfer without contamination and are maintenance-free.
                                            • Process vacuum pumps and compressors

                                            • This category consists of pumps for neutral and slightly aggressive or corrosive gases and vapors. Reliability, ruggedness and safety are key qualities characterizing KNF´s process pumps.
                                            • Explosion proof pumps

                                            • Explosion-proof pumps are designed to prevent internal or external explosions by enclosing parts that could ignite either the transfer media or the surrounding atmosphere. KNF supplies a range of explosion-proof pumps for use in potentially explosive atmospheres. All our pumps are ATEX-compliant and certified in accordance with the 94/9/EC directive on equipment and protective systems.
                                            • Temperature-resistant and heated pumps

                                            • Temperature-resistant pumps can transfer air as well as neutral or aggressive gases at temperatures up to 240 °C. In order to prevent condensation of the measuring gas, the heated head pump types possess temperature-resistant pump head components and optional thermostatic or electronic temperature control.
                                            • Chemically resistant pumps

                                            • KNF’s range of chemically resistant pumps is designed for aggressive gases and vapors and suitable for universal application. Whether you need to transfer or compress media or to generate vacuums, there is a pump type in this category with the right pneumatic characteristics for the task.
                                            • Double diaphragm pumps

                                            • KNF double diaphragm pumps offer a high level of performance and greatly enhance safety, especially when working with dangerous, rare and valuable gases. A second diaphragm is located underneath the working diaphragm. The safety diaphragm has a significantly longer service life than the working diaphragm, thus ensuring that no gas can escape into the environment even if the working diaphragm ruptures.