KNF OEM Pumps
Flow rate (at atm. pressure)
Suction height, self-priming
Low Pulsation, Less Than 150 mbar
Combining the advantages of diaphragm pump technology with a pulsation level comparable to gear pumps, the FP 400 is an innovation from KNF, targeting recirculation applications in a diverse set of markets.
Pulsation for FP 400 is less than 150 mbar. Levels far below this are achievable, depending on the configuration. The pump delivers up to 5 l/min of liquid at back pressures to 1 bar g, with full linear control of flow between 10% and 100% of the nominal flow rate.
Low Shear, Low Vibration and More
The pump flow is completely stable with fluid viscosities ranging from 1 to 150 cSt. With some flow rate reduction, the FP 400 can handle viscosities up to 500 cSt.
Other benefits include extremely low vibration, a noise level below 55 dBA, an IP 65 protection rating, and chemical resistant material options.
Model FP400 KP DCB-4 FP400 KT DCB-4 Pump Head PP PP Diaphragm PTFE-Coated PTFE-Coated Valve / O-rings EPDM FFKM / FKM Flow Rate 4.6 l/min 4.3 l/min
FP 400 Applications
- Industrial Inkjet Printing
UV Inks, as well as modern printers that require much higher recirculation flow rates, for example the High Laydown (HL) printhead technology
- Medical Devices
Temperature management, including aesthetic laser cooling systems
Temperature management and cooling, especially in systems with sensors sensitive to pulsation
- Fuel Cells
Fuel recirculation and membrane hydration
The FP 400 has been intensively tested for 18 months at major printer and ink manufacturers in five countries across Europe and East Asia. The KNF Modular System ensures full customization possibilities and timely response to the market. Please contact us to learn more.
- Low pulsation, low shear and low vibration
- Excellent linear adjustment
- Self-priming and dry-run safe
- Able to transfer aggressive media
- Long lifetime, maintenance-free
- IP 65
Permissible media temperature °C +5° to +80°C Permissible ambient temperature °C +5° to +50°C Voltage V 24 V Dimensions L×W×H (mm) 155×138×100 Flow rate at atm. pressure l/min 4.6 l/min for KP Version, 4.3 l/min for KT Version Max. pressure head mWg 10 Max. suction height mWg 3 Protection factor IP 65 Motor DCB-4 Power start at 5°C ambient W 79 W I start at 5°C ambient A 3.3 A I start at 25°C ambient A 2.4 A Wires AWG 22 Input signal Vctrl / PWM inverse Input signal range / Vctrl V 0 – 5 V Input signal range / PWM inverse % 100% – 0% Hydraulic connections G 3/8" Hose diameter recommendation mm ID 12
Title Order No. Leakage sensor On request Pressure switch On request Pulsation damper On request Anti-vibrations mounts On request
At DRF, we work closely with our brands to provide custom-tailored solutions. Please contact us to learn more:
+886 2 27941000 09:00–17:30, Monday to Friday (UTC+8, except public holidays in Taiwan)