Quality Instrument and Equipment Solutions for Demanding Technical Environments
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KNF Air & Gas OEM Liquid Pumps
Basic Liquid OEM Pump Information
Liquid Micro OEM Pumps - .05 to 3 LPM Liquid OEM Metering Pumps - .08 to 300 mLPM Liquid Pump Accessories & Specialty Pumps Air & Gas Pumps - 0.25 to 300 LPM
Download OEM Products Brochure in the Adobe PDF format.
Click HERE to begin the download (1.2Mb, 6pgs)Download Liquid Pumps Brochure in the Adobe PDF format
Click HERE to begin the download (250kb, 2pgs)Download Pumps with BLDC Motors Brochure in the Adobe PDF format.
Click HERE to begin the download (450kb, 2pgs)
Versatility for the OEM Designer KNF's experience with established designs, materials and motors permits us to "optimize" standard pumps to fit your exact specifications. For example, you may require an electropolish wetted surface for a sensitive analyzer project, or a micropump fitted with a low-current motor for your portable instrument.
Liquid pumps
KNF liquid diaphragm pumps are very chemical resistant. They are divided into two main categories: Liquid Micro OEM Pumps and Liquid OEM Metering Pumps. We also have Liquid Pump Accessories.Advantages of KNF diaphragm liquid pumps
- Maintenance free and long life adds to your product reliability
- Self priming and ability to run dry without damage
- Stable flowrate over long time periods for more accurate instrument performance
- Good chemical resistance avoids excessive pump maintenance
Replaces peristaltic pumps
- No messy peristaltic tubing failure to worry about as KNF uses no tubing
- Not affected by tubing fatigue which changes resultant pump volume over time
- Smaller, more powerful than peristaltic pumps.
- Put the KNF liquid pump on location, where you need it, not on the floor
The following pages show our standard product range. Over 80% of our pumps are project pumps which are made specifically to the requirements of our customers so in case you can't find "your" pump don't hesitate to get in touch with our specialists who will be able to create a pump to fit your needs. Creating tailor made solutions is a KNF specialty.
Available Options Pumps with
Brushless DC Motors
Download pdf file (2pg. 450kb)
Available Materials
Why KNF Pumps are Better
KNF pioneered in the design of advanced diaphragms. The first diaphragms were simple circular, flat sheets of an elastomer with a hole punched in the center. The diaphragm was clamped around the edges between the pump head and the housing, and fastened to the oscillating connecting rod in the center with a metal clamping disk. Pumping action occurred as the diaphragm moved within the pump chamber. Clearance is machined into the pump head to accommodate the bulky clamping disk. This increases unproductive dead volume, reducing achievable end vacuum.Molded Diaphragm KNF engineers molded a threaded metal stud into the diaphragm body, which eliminated the bulky clamping disk. Gone was an occasional source of leaks and corrosion. The diaphragm, smooth across and pliable, now fits closer to the pump head. This drastically reduces dead volume, and as a result, improves maximum vacuum.
NOTES: Standard continuous performance ratings listed on this website and on datasheets are based on technical data and test results of nominal units at sea level with an ambient temperature of 70° F (21° C) and nominal electrical supply as listed above, and are for reference only. Teflon® is a registered trademark of DuPont and used under license. Kalrez® and Viton® are registered trademarks of DuPont Dow. Ryton® is a registered trademark of Phillips 66. Kynar® is a registered trademark of Elf Atochem. LABOPORT® is a registered trademark of KNF Neuberger GmbH. Specifications subject to change without notice. You should always check corrosion resistance charts for compatibility.
