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Horizontal Eccentric screw pump B70H industry, Ex (with three-phase motor)


For mobile and stationary application Lutz horizontal eccentric screw pumps are suitable... more
Flow rate: 25 l/min. (explosion-proof)

For mobile and stationary application

Lutz horizontal eccentric screw pumps are suitable for pumping aqueous to highly viscous Newtonian and non-Newtonian media. The pumps are suitable for abrasive, solids containing and shear sensitive media, as well as for neutral, aggressive and easy fl ammable liquids under high delivery pressure.


  • By positioning outside of the container it is possible to pump liquid out of the stacked containers - or containers which are not accessible from the top
  • Due to the compact construction height, emptying at limited room height is possible
  • Easy handling of heavy pumps
  • No physical strain due to lifting
  • Easy replacement of wearing parts by the new rotor/stator combination
  • Fluid transfer is possible in either direction of rotation
  • By replacing the rotor/stator unit, an easy change of size is possible
  • Also available in PURE design

Easy change of size

  • A change between different stator materials is possible with keeping the same stator sleeve.
  • A conversion from 25.1 to 75.1 is possible by replacing the stator sleeve.
  • Outer tube and shaft always have the same length and are compatible with each rotor/stator unit.
  • By replacing stator, rotor and stator sleeve, a conversion to any rotor/stator combination is possible.

Optional with stainless steel trolley with normal or conductive wheels. In conjunction with a flow meter and operating unit, a mobile filling station is created.

Viscosity (up to mPas): 1,500 (e.g. baby food), 4,000 (e.g. shampoo), 20,000 (e.g. honey), 30,000 (e.g. jam), 100 (e.g. milk), 100,000 (e.g. toothpaste), 120,000 (e.g. tar), 500 (e.g. hydraulic oil)
Explosion protection: explosion-proof
  B70H 25.1 (Ex) * Material outer tube: Stainless Steal (1.4571/1.4404)...
  B70H 25.1 (Ex) *
Material outer tube: Stainless Steal (1.4571/1.4404)
Stator: PTFE
Seal: Mechanical seal (MS)
Drive shaft: Universal joint shaft (UJ)
Temp. of medium**: max. 140 °C
Pressure joint: Tri-Clamp DN 50
Nominal size: 400 mm
Atex-Identification: Ex II 2 G Ex h IIB T4 Gb
Weight: 5.5 kg
Delivery rate:*** max. 25 l/min 
Delivery head:*** max. 8 bar
Viscosity: 1 - 100,000 mPas

* Explosion-proof eccentric screw pump approved category 2 (according to ATEX) for pumping flammable liquids of the explosion group IIA and IIB. Temperature class T4 at 40°C ambient temperature or temperature class T3 at 60°C ambient temperature.

** Determined with water at 20 °C, three-phase motor (900 1/min.) and elastomer stator

*** with PTFE Stator (when using explosion-proof eccentric screw pumps B70H, the medium temperature may not exceed 100 °C)