STJ

Self-priming centrifugal electric pumps

The self-priming centrifugal electric pumps series STJ-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 ~ 4 m3/h
  • Heads up to ~ 55 m
MAGGIORI INFORMAZIONI CATALOG INSTRUCTION MANUAL

TECHNICAL FEATURES

  • Pump body: cast iron G20 with anti-corrosive coating
  • Motor bracket: die casting aluminium UNI 5076 (cast iron G20 for
    STJ2 150, 200, 300)
  • Diffuser: techno-polymer
  • Diffuser body: techno-polymer (cast iron G20 with anti-corrosive coating STJ2 150, 200, 300)
  • Nozzle & Venturi tube : techno-polymer
  • Impeller: techno-polymer (stamped brass UNI-EN 12165 STJ2 150, 200, 300)
  • Pump shaft: stainless steel AISI 420F (AISI 304 for STJ2 150, 200, 300)
  • 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

RICHIEDI MAGGIORI INFORMAZIONI