Normalized and in-line

The in-line centrifugal electric pumps with flanged in-outlet 4 poles STILP series have been designed to pump clean liquids, without abrasives and suspended solids, non-explosive or aggressive for the pump’s materials.

Main use: civil and industrial applications, heating, air conditioning, cooling and circulation plants.

  • Liquid temperature -15 °C to + 90 °C (*).
  • Ambient temperature up to 40 °C.
  • Flow rate up to 72 m3/h.
  • Head up to 23 m.
  • Operating pressure max 10 bar (PN 10)
  • Average MEI ≥0.4

(*) special applications available on demand


  • Pump body: cast iron G20 with cataphoresis treatment
  • Impeller:  cast iron G20 with cataphoresis treatment; brass for 40-160 A and 40-160 B
  • Motor bracket: cast iron G20 with anti-corrosive coating
  • Orifices in/outlet: according EN 1092
  • Pump shaft: AISI 304 stainless steel
  • Mechanical seal: carbon-ceramics
  • Threaded counter flanges: galvanized steel complete with gaskets.


Motors are asynchronous, squirrel cage-type, closed, with external ventilation. The motor protection for three-phase version must be installed by the customer. Equipment compliant with current standards should be used.

  • Efficiency class: IE3
  • Mounting: IM B5 / IM V1 (IM 3001)
  • Thermal class: F
  • Protection grade: IP 55
  • Board protection: IP55
  • Service type: S1

Possible execution with variable speed drive (VSD) type Inventa.