Astro 20 BU-T Express Circulator, 11.5 GPM Zoom

Astro 20 BU-T Express Circulator, 11.5 GPM


Brand: Armstrong Pumps

Armstrong Pumps
110123-401 has been discontinued.
Please contact customer service at
(888) 757-4774 for help finding an alternative.

Do not use this item for any installation or repair of potable water applications. This product does not comply with the "Safe Drinking Water Act," which requires that products meet low-lead standards in order to be used in systems providing water for human consumption (drinking or cooking). This item is for non-potable (non-human consumption) water applications only.




Max Flow (GPM): 11.5
Flow Range (GPM): 0-11.5
Max Head (Ft): 5.8
Hertz: 60
Material: Bronze
Max Fluid Temp: 230°F
Horse Power:
Type: Pump
Phase: 1

Description for Armstrong Pumps 110123-401

The Armstrong Astro Express system delivers hot water to the tap, recirculating cooled water back to the water heater via existing cold water piping. In addition to providing instant hot water access, the system also helps to conserve municipal drinking water resources and save metered water charges. It's easy to install, and does not require special return piping to the water heater. This makes the Astro Express system the ideal retrofit solution for existing residential buildings, and a cost-effective solution, when offered as an option in new home construction.


  • 24-hour clock timer
  • 15 minute user selectable intervals
  • On/Off/Auto switch
  • 5 ft power cord
  • Brass full unions
  • EPDM O-rings
  • 1 male and 2 female 3/4" tailpieces
  • Wet rotor design ensures virtually silent operation
  • Bronze housing for potable water use
  • High starting torque overcomes mineral build-up
  • Built for durability with bronze casing, stainless steel shaft and graphite bearings

  • Astro 20 BU-T Express Circulator, 11.5 GPM

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