Flux Air-Operated Diaphragm Pumps FDM 10

The FLUX name has been synonymous with pump technology for more than 70 years. It was the invention of the electric drum pump that sparked it all off. In the meantime, of course, technology has become more sophisticated. FLUX company innovations have markedly improved working routines for filling and transferring fluids. It is often said that medium-sized companies are the engines of progress.

FLUX is an invention. In the year 1950 the first electric drum pump was introduced. It was named FLUX. Out of this core, the FLUX-GERÄTE GMBH was established. The medium-sized company based in Maulbronn develops and sells innovative solutions in the field of pump technology.

FLUX air-operated diaphragm pumps are genuine allrounders for the safe reliable and careful (no shearing) transfer of thin to high viscosity products, even with solids in suspension, as well as abrasive, highly flammable or aerated liquids. Each pump model is available in different versions because of a great variety of possible material combinations of the wetted component parts. FLUX air-operated diaphragm pumps are powered by compressed air into the air inlet which in turn directs the air to a diaphragm that separates the air from the liquid section. The diaphragm is pressurized which forces the liquid out of the pump discharge. While this is happening the other diaphragm is de-pressurizing and sucking the liquid into the inlet the cycle is then repeated causing a constant flow through the pump unit via the ball valves. The flow is always in through the bottom of the pump inlet/suction and out of the top pump discharge. It is a displacement pump. The diaphragm pump has the added advantage that the pump pressure is always limited by regulating the air inlet pressure.  The pumps in Aluminium, Cast Iron, Stainless Steel and Acetal are ideal for use in hazardous areas.

Air-Operated Diaphragm Pumps FDM 10

The air-operated diaphragm pump FDM is available in plastic and a metal version. The design ensures a completely oil-free operation. In addition, the pump is available as a version for increased pressure (FDMH 25) and for use in hazardous areas.

The FLUX air-operated diaphragm pump FDM 10 in injection-molded version 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.


  • Moulded version
  • Self-priming even from a dry start
  • Variable delivery rates by adjusting air pressure to the pump
  • No need of by-pass control
  • Fully submersible
  • Unbalanced air valve design eliminates stalling
  • Oil-free operation
  • Regulating valve insensitive to foreign matter in the air


  • Suitable for dry run operation
  • Blockage-free, infinitely adjustable operation
  • Long service life
  • Free of wear
  • Service-friendly operation
  • Versions available for use in hazardous areas


  • Alcohols in pharmaceutical sector
  • Petrol
  • Chlorine bleach
  • Cleaning agents
  • Pickling
  • Waste water


  • Flow rate: max. 40 l/min1
  • Flow pressure: max. 7 bar
  • Operating pressure: max. 7 bar
  • Suction head: max. 4 m1
  • Suction head product-filled: max. 7,6 m1
  • Size of solids: max. 1,6 mm
  • Viscosity: min. 1 mPas – max. 15000 mPas2
  • Housing Materials: Polypropylene, Polyvinylidene fluoride, Acetal conductive
  • Media / Fluids: Highly flammable media, Viscous media, Abrasive media, Aggressive media
  • Connection pressure side: G 3/8
  • Connection suction side: G 3/8

The pump is available in:

  • Pump housing: Polypropylene (PP), Acetal conductive (AC), Polyvinylidene fluoride (PVDF),
  • Diaphragm: Santoprene (PP-EPDM-Copolymer), PTFE

Temperature range:

  • Pump housing:
    PP: up to max. 65 °C
    AC: up to max. 80 °C
    PVDF: up to max. 90 °C
  • Diaphragm and seals:
    Santoprene: up to max. 100 °C
    PTFE: up to max. 100 °C

Performance data

  • obtained with water at 20 °C
  • Delivery rate: max. 40 l/min
  • Suction head wet: max. 7,6 m water column
  • Suction head dry: max. 4 m water column

Tips for the use of FLUX air-operated diaphragm pumps

By increasing hub frequency the expected durability of the diaphragms is reduced. The ideal operating conditions are between 40 % and 60 % of the maximum output.
The output on the performance charts is based on water. Higher viscosity reduces the delivery rate depending on the pump type. Air-operated diaphragm pumps can pump high-viscosity liquids up to the barrier of flowability. Important for the use and capacity of the pump are further arguments as adhesion, flowability, and molecular structure. Ask our sales engineers.
Suction side
If the suction side increases 2 – 3 m, the delivery rate is reduced at 20 %.

Download Data Sheet: Air-Operated Diaphragm Pumps FDM 10

Ref: flux-pumps.com

Another Article:

Similar Posts