• KNF FP 400 - Low Pulsation Diaphragm Pump
    KNF FP 400 - Low Pulsation Diaphragm Pump KNF FP 400 - Low Pulsation Diaphragm Pump KNF FP 400 - Low Pulsation Diaphragm Pump KNF FP 400 - Low Pulsation Diaphragm Pump KNF FP 400 - Low Pulsation Diaphragm Pump

The FP 400 is a new generation of diaphragm pump from KNF combining the traditional advantages of diaphragm pump technology – self priming, can run dry, long life time – with a pulsation level comparable to gear pumps. This pump delivers up to 4-5 L/min flow to meet high recirculation volume requirement with compact size.  Also, there are a few options of materials, such as EPDM version for less aggressive UV and water-based liquid, whereas PTFE and FFKM materials for diaphragm and valves for oil/solvent-based liquid.

Key Features

  • Low flow pulsation(less than 150 mbar @ nominal flow rate)
  • Excellent linearity between 10% to 100% of the nominal flow rate
  • Stable against back-pressure (upto 1 bar) and viscosity changes 
  • Good solution for applying glazes, enamels, hot melt inks etc.
  • Self-priming and can run dry
  • Gentle conveying of sensitive media
  • Long lifetime and no maintenance
  • Maximum flow rate 4.6 mL/min
  • Suction height 3 mH2O
  • Dimension: 155 x 138 x 100 (mm^3)


Typical Applications

  • Industry inkjet printing
  • fluid circulation  for medical dialysis
  • Purified water circulation
  • Medical and scientific laser body cooling
  • Water transfer in fuel cell generator
  • in vitro diagnostic device (IVD)
  • Semiconductor industry






Thumb File information
Installation ManualFP400EN00.pdf 752.19KB
DBFP400EN Diaphragm Pump Datasheet.pdf 1.27MB
External Links
Thumb Link Name
FP 400 Diaphragm Pump CAD Models
KNF FP400
Pump Head Material PP
Diaphragm PTFE
Valves/O-rings EPDM
Max Flow Rate (mL/min) 4.6
Suction Height (mH2O) 3
Pressure Head (mH2O) 10
Permissible media temperature (°C) 5- 80
Permissible ambient temperature (ºC) 5-50
Protection factor IP65
Motor DCB-4
Power (W) start at 5°C ambient 79
I (A) start at 25°C ambient 2.4
I (A) start at 5°C ambient 3.3
Input Signal Vctrl/PWM inverse
Outer Dimension 155 x 138 x 100 (mm^3)
Hydraulic Connections G 3/8''
Hose Diameter (mm) ID 12

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KNF FP 400 - Low Pulsation Diaphragm Pump

  • Brand: KNF
  • Product Code: FP400KPDCB-4
  • Availability: In Stock

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Tags: Diaphragm Pump, Fluid Transfer, IVD