Close coupled peripheral pumps

The close-coupled pumps with peripheral impeller series STP 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 90 °C for other use, while the ambient temperature must not be higher than 40 °C
  • Flow rate up to ~ 3 m3/h
  • Heads up to ~ 80 m


  • Pump body: cast iron G20 with cataphoretic treatment
  • Motor bracket: cast iron G20 with cataphoretic treatment
  • Impeller: stamped brass UNI- EN 12165
  • Pump shaft: stainless steel AISI 420F
  • Mechanical seal: carbon – ceramics

”ABS” Anti-blocking system in AISI 304 stainless steel (only STP 50)
international Patent N° IT1315401


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 (Class B per STP 50)
  • Service: S1
  • Degree of protection: IP 44
  • Terminal board protection: IP 54.