RFM 40

For delivery rates up to 375 l/min

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The FLUX air-operated diaphragm pump RFM/RFML 40 is self-priming and protected against dry running. The pump is distinguished for its versatility and can be used for pumping low to high viscosity media with solid particles, abrasive media, highly flammable media or liquids with high gas content.

  • Application areas: FDA  

Technical data:

  • Flow rate: max. 375 l/min1
  • Flow pressure: max. 7 bar
  • Operating pressure: max. 6 bar
  • Suction head: max. 4,5 m1
  • Suction head product-filled: max. 8 m1
  • Size of solids: max. 7,5 mm
  • Viscosity: min. 1 mPas - max. 15.000 mPas2
  • Housing Materials: Polypropylene, PTFE
  • Media / Fluids: Abrasive media, Media with solid particles, Viscous media
  • Connection pressure side: G 1 1/2
  • Connection suction side: G 1 1/2
  • 1 dependent on pump model, operating pressure and medium
  • 2 dependent on the flow behaviour of the medium

Product attributes

  • Massive construction
  • Almost completely diffusion resistant due to the thick-surface structure
  • Long service life even at high pressures due to composite enduring diaphragm
  • Version available with flap valves
  • Extremely long service life even with abrasive media
  • Quiet/low noise
  • Composite enduring diaphragm with integrated metallic core
  • Easily accessible control valve without seals


  • Safe dry running and overload-proof
  • Self-priming
  • Insensitive to solids in suspension
  • Variable delivery rates by simply adjusting the air pressure
  • Very high chemical resistance
  • Suitable for high temperature
  • Long service life of diaphragm due to short stroke lifts
  • FDA-certified version available