Armstrong Fluid Technology

Model Series 4302 - Vertical In-Line dualArm Pumps

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Pipe-mounted 2-pump unit with integrated intelligent controls for space-saving installation, superior energy performance, and full redundancy or parallel-pumping operation. Saves up to 75% in energy over comparable traditional constant speed or variable frequency operated pump installations.

  • Vertical In-line design eliminates the need inertia bases, housekeeping pads, and flex connectors and reduces piping requirements
  • 2-pump casing for reduced footprint
  • Integrated, intelligent controls eliminate the need for procurement, installation (incl. wiring), calibration and upkeep of differential pressure sensor
  • Superior energy performance qualifies for significant cost recovery under utility and government rebate programs
  • Design Envelope selections frequently recommend a smaller motor and/or pump which reduces installed cost

  • Applications :
    • HVAC system pumping; general purpose pumping; industrial/process pumping (water or glycol based)
    • Armstrong Design Envelope Pumps with integrated controllers are OSHPD pre-approved!
  • Materials
    • Cast iron or ductile iron casing
    • Cast iron or bronze impeller
    • Sintered silicon carbide mechanical seal
  • Configuration : On-board Intelligent Variable Speed controls with Sensorless or Parallel Sensorless control. Controls enclosure UL type 12 or UL type 4X (outdoor applications). Available with NEMA premium motors. Outside balanced or inside single spring mechanical seal
  • Performance range : Up to 1250 USgpm flow and 250 ft head (80 L/s, 76 m)
  • Temperature : 250°F (121°C)
  • Power Range ; 1 hp to 75 hp (0.75 kW to 55 kW)
  • Size : 3' to 8” (80 mm to 200 mm)

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