Flow rate (at atm. pressure)

Up to



Pressure head



Suction height, self-priming



KNF FP 1.150
Low-Pulse Smooth Flow

Based on its distinctive five-diaphragm structure, KNF FP 1.150 is the newest addition to the Smooth Flow series in 2022, combining the advantages of diaphragm pumps with pulsation levels traditionally seen in gear and centrifugal pumps. 

While specifically designed for use in deionized water systems, this pump is also an ideal solution for fuel cells, analytical instruments, ink-jet printers, medical devices, semiconductor equipment, etc. 

Customized Performance on Request

The FP 1.150 delivers a flow rate of up to 1.1 l/min, a suction height of 2.3 mWg, and a pressure head of 60 mWg. Moreover, these performance parameters can be custom-fit by a tailored pump head:

SpecificationUnitCustomizable parameter
Flow rate (max.)l/min1.4
Suction height (max.)mH2O3
Pressure head (max.)mH2O60
Features and Benefits
  • Low pulsation
  • A digitally-adjustable motor supports PWM inverse/Vctrl input signals with excellent linearity
  • Gentle conveying of sensitive media
  • Highly resistant to aggressive media
  • Long service life and maintenance-free
  • Self-priming and dry-run safe
  • IP 65 protection class

An NSF-certified version is also available. Feel free to contact us for all accessories and customization options.

  • Permissible ambient temperature °C+5° to +40°C
    Permissible liquid temperature °C+5° to +80°C
    Voltage V24 V
    Dimensions L×W×H (mm)139×94×77
    Flow rate l/minKP Version: up to 1.1 l/min; KT Version: up to 1.0 l/min
    Suction height mWgKP Version: up to 2.3 mWg; KT Version: up to 2.0 mWg
    Pressure head mWg60
    Protection class IP 65
    Motor DCB-4
    Power (W) start at 5°C ambient W33.6
    I (A) start at 5°C ambient A1.4
    I (A) start at 25°C ambient A1.1
    Wires AWG22
    Input signal Vctrl / PWM inverse
    Input signal range - Vctrl V0...5 V
    Input signal range - PWM inverse %100%...0%
    Hydraulic connections G 1/8"
    Hose diameter recommendation mmID 8
    • Pump head: PP
    • Diaphragm: PTFE-coated
    • Valve and O-ring material options: EPDM or FFKM/FKM

Related Products

More products available on the category page:

OEM Diaphragm Liquid Pumps


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