Vertical multistage

Extremely noiseless and reliable the vertical centrifugal multistage electric pumps of the series STVX have been designed to pump clean liquids, without abrasives and suspended solids, non-explosive or aggressive for the pump’s materials.

  • Liquid temperature not higher than 35 °C for domestic use (CEI EN 60335-2-41) or 120 °C for other use, while the ambient temperature must not be higher than 40 °C
  • Maximum working pressure is 27 bar
  • Flow rate up to 118 m3/h
  • Heads up to 320 m.


  • Motor bracket: Cast iron G20 with anti-corrosive coating
  • Pump body: Stainless steel AISI 304 (cast iron G20 with cataphoretic treatment version 30-45-65)
  • Diffusers, Impellers & Pump Shaft: Stainless steel AISI 304
  • Impellers: Stainless steel AISI 304
  • Pump Shaft: Stainless steel AISI 304
  • Bushings: Tungsten carbide
  • Mechanical seal: EPDM Graphite – Silicon carbide


The control motors are asynchronous, squirrel cage-type, closed, with external ventilation.

  • Capacitor always on, for single-phase models
  • The motor protection must be installed by the customer. Equipment compliant with current standards should be used
  • Class of insulation F
  • Service S1
  • Degree of protection: IP 55
  • Terminal board protection: IP 55
  • Dimension B14 up to 4 kW, dimension B5 starting from 5.5 kW
  • The standard voltage is 230/400 V up to 4 kW, whereas it is 400/690 V starting from 5.5 kW.