Self-priming centrifugal electric pumps

The self-priming centrifugal deep suction electric pumps series STA have been designed to pump clean water from wells of at least 4” when the water level is more than 8 m deep.

  • Liquid temperature not higher than 35 °C for domestic use (CEI EN 60335-2-41) or 60 °C for other use, while the ambient temperature must not be higher than 40 °C
  • Flow rate up to 3,6 m3/h
  • Heads up to 50 m.


  • Pump body : cast iron G20 with anti-corrosive coating
  • Motor bracket : die casting aluminium UNI 5076 (cast iron for STA 150-200)
  • Ejector : cast iron G20 with anti-corrosive coating
  • Diffusers, Nozzle & Venturi tube : techno-polymer
  • Impellers : techno-polymer
  • Pump shaft : stainless steel AISI 304 (AISI 420 F for STA 80-100)
  • Mechanical seal : carbon – ceramics


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

  • Incorporated motor protection and capacitor always on, for single-phase models
  • The motor protection for three-phase models must be installed by the customer. Equipment compliant with current standards should be used
  • Class of insulation F
  • Service S1
  • Degree of protection IP 44
  • Terminal board protection: IP 54