Astro 280SS Stainless Steel 3-Speed Circulator Pump, 115V

The 110223-321 from Armstrong is a Astro 2 series, 280SS model, 115V, 3-speed flanged circulator designed for domestic water or open-loop heating applications. Low, Medium, and High speeds offer flexibility in installation of domestic recirculation, radiant heating, baseboard and other systems. This model replaces Taco 0011/0013/0014 st. steel series, Grundfos UPS 26-99SFC, Wilo Star S 21BFX and B&G NBF-36 & 45.


  • Designed for use in open-loop heating applications, including hydronic, radiant heat and others;
  • e-Coating on the inside of the pump provides an enhanced corrosion protection for longer pump life and less debris in the system;
  • Large wiring box and convenient plug-in terminal strip;
  • 3-Speed functionality;
  • Lead-free, approved for potable water applications nationwide;
  • cETLus listed;
  • Standard flange (2-1/2" OC holes), compatible with other brand flanges & isolation valves.

Technical Specifications:

  • Electrical: 115V, 60Hz, 1 Phase;
  • Nominal Power: 218 Watts;
  • Amp Draw: 1.50A @ Spd 1; 1.80A @ Spd 2; 1.90A @Spd 3;
  • Max. fluid temperature: 230°F;
  • Max. ambient temperature: 104°F;
  • Max. operating pressure: 150 psi;
  • Max flow: 32 GPM;
  • Max. head: 31 ft;
  • Body material: Lead-Free Stainless Steel;
  • Component materials: Noryl impeller, ceramix shaft & bearings, EPDM gasket;
  • System connections: standard flange;
  • Circulator flange-to-flange dimensions (height): 6.5" (6-1/2").


  • 5 years manufacturer's warranty. 


Stainless Steel
3-Speed Pumps
Max. Head
20-30 ft
Max. Flow
20-30 GPM

Astro 280SS Stainless Steel 3-Speed Circulator Pump, 115V

  • Views: 2167
  • Astro 280SS Stainless Steel 3-Speed Circulator Pump, 115V QR Code
  • Brand: Armstrong
  • Model: 110223-321
  • MPN: 110223-321
  • Availability: 1
  • $ 625.95

Tags: Circulator Pumps, Heating, Heating Supplies, Condensing Boilers, Heating and Cooling