Design Envelope 4280 End-Suction Pumps Increase Energy Savings


High-performance Design Envelope End-Suction pumps in the 1 to 10 hp range providing extended intelligence, wireless connectivity, integrated Armstrong controls, Parallel Sensorless Pump Control, and onboard web services. Design Envelope technology can help building managers realize energy savings of up to 70%. Design Envelope pump offerings also support Armstrong's connected performance management service, Pump Manager.


  • Applications: HVAC-system pumping and control; general purpose pumping; industrial/ process pumping and control (water or glycol based)
  • Materials
    • Cast-iron or ductile iron casing / ductile iron e-coated casing on units 1-10hp
    • Bronze or stainless steel impeller on units 1-10hp
    • Sintered silicon carbide mechanical seal
  • Configuration: On-board Intelligent Variable Speed controls with Sensorless control. Controls enclosure UL Type 12 (IP55) indoor applications. 1 to 10hp (0.75 to 7.5 kW) range standard with Design Envelope permanent magnet (DEPM) motors that reduce losses by more than 20% over NEMA Premium efficiency. Network capable for remote performance management services.
  • Performance range: 25 to 1,000 USgpm (1.5 to 63 L/s) flow; 10 to 160 ft (3 to 48 m) head (composite curves available)
  • Temperature: 250°F (121°C)
  • Power Range: 1 hp to 10 hp (0.75 to 7.5 kW)
  • Size: 1.25 to 6-in. discharge (32 to 150 mm)
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