The New FP 150

A diaphragm pump with low pulsation

With the FP 150, KNF presents another diaphragm pump of the new successful generation. The new model offers all the advantages of diaphragm pump technology (self-priming, safe to run dry, long service life) and reaches a pulsation level that is otherwise only achieved by gear pumps.

The new pump generation was developed for the special challenges of UV inks, which are used today in more and more applications of industrial inkjet printing. The five diaphragms of the FP 150 act with low shear force on the UV inks. This prevents premature curing, i.e. excitation of the UV initiators, in the pump. In addition, the FP150 is optimally adapted to the new high-layout printheads on the market and their significantly higher recirculation rates.

To ensure compatibility with different ink types, the FP150 is available in different versions:

• As EPDM model for less aggressive UV and water-based inks

• As model with PFTE-coated diaphragm, mainly for solvent-based inks

• As model with FFKM diaphragm and valves for oil/solvent-based inks and abrasive pigments used in ceramic and glass printing

A key feature of the new FP 150 is its low pulsation. Depending on the system configuration and running speed, values of less than 150 mbar are achieved at the pump outlet at nominal flow rate. These advantages make the pump the ideal solution for industrial inkjet printing. Another convincing feature of the new FP 150 is the infinitely variable adjustment of the flow rate. The pump offers outstanding linearity between 10 % and and 100 % of the nominal flow rate. The pump can also withstand a back pressure of up to 2 bar and can be used with most industrial inkjet inks and their different viscosities. Therefore, the FP 150 is a very good Solution for the application of glazes, enamel, hot melt ink, etc. The FP 150 has been intensively tested for 12 months at large printer and ink manufacturers in the USA, Great Britain, Italy and Israel and has already aroused broad interest.

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