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Self-priming centrifugal electric pumps » STJ2
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STJ2

stj2

SPECIAL EXECUTIONS

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SELF-PRIMING CENTRIFUGAL ELECTRIC PUMPS

The self-priming centrifugal electric pumps series STJ2 have been designed to pump clean water from wells, even if mixed with gas

  • Maximum suction up to 8-9 m
  • 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 ~ 9.5 m3/h
  • Heads up to ~ 60 m

 

TECHNICAL FEATURES

  • Pump body: cast iron G20 with anti-corrosive coating
  • Motor bracket: in die casting aluminium  UNI 5076 (cast iron for STJ2)
  • Diffuser, Nozzle & Venturi tube: Techno-polymer          
  • Impellers: Techno-polymer  (stamped brass UNI-EN 12165  STJ2)
  • Pump shaft: stainless steel Aisi 420F (Aisi 304 for STJ2)
  • Mechanical seal: carbon-ceramics

 

MOTOR

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