4392 Variable Speed

The variable speed 4392 in-line pumps come as a pipe-mounted 2-pump unit with integrated intelligent controls for space-saving installation, superior energy performance, and duty/standby operation. Saves up to 75% in energy over comparable traditional constant speed or variable frequency operated pump installations.


  • Cast iron, ductile iron or bronze casing
  • Cast iron or bronze impeller
  • Configuration: On-board Intelligent Variable Speed controls with Sensorless control. Controls enclosure UL type 12 or UL type 4X (outdoor applications). Available with NEMA premium motors for significant reductions in energy usage.
  • Performance Range: Up to 69 L/s (1,100 USgpm) flow; up to 30 m head (100 ft)
  • Temperature: 121oC (250oF)
  • Power: 0.75 kW to 5.5 kW (1 hp to 7.5 hp)
  • Size: 50 mm to 150 mm (2" to 6”)
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