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Armstrong Astro 230SS, 110223-306, Stainless Steel, 3 Speed, Flanged


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  • Typical Applications: Hot Water Boiler & Booster Pumps
  • Stainless Steel, 3 Speed, Flanged
  • Residential heating or cooling, potable water, water conservation.
  • Max. working pressure: 150PSI
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Product Description

The Armstrong Astro 230 is a hydronic circulator that conserves energy and eliminates maintenance. Armstrong's Astro Circulator is intended for circulating water or ethylene glycol solutions in closed hydronic or solar heating systems. It is designed with no mechanical seals or couplers to replace, and no lubrication is required. Armstrong Astro 230 hot water re-circulation systems automatically circulate water through domestic hot water distribution pipes. This helps to ensure that everyone in the household has “instant” hot water at the tap when they need it.

***Rubber gaskets included with pump***

Typical Applications

Designed for domestic water or open-loop heating applications like radiant heating, baseboard and other systems.

Performance Data

  • Flow Range: 0-18 GPM
  • Head Range: 0-18 Feet
  • Maximum Fluid Temperature: 230 degrees F (110 degrees C)
  • Horse Power: 1/25
  • Working pressure: 150 PSI
  • Connection: Flanged
  • Universal Flange to Flange Dimension


  • 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
  • Standard flange (2-1/2" OC holes), compatible with other brand flanges & isolation valves
  • UL and CSA Listed


  • No mechanical seals to leak
  • No couplers to break
  • No lubrication
  • Noryl impeller
  • Vent plug for initial purging if required
  • Stainless Steel shaft
  • Ethylene Propylene gaskets
  • Impedance protected motor
More Information

Astro-230SS 3-Speed Stainless Steel Circulator, 0-18 GPM Flow

Technical Data:
Flow Range: 0 to 18 USgpm (0 to 1.26 L/s)
Head Range: 0 to 32 ft. (0 to 9.8 m)
Motor: 115 V, single phase, 60 Hz
Max. Fluid Temperature*: 230°F (110°C)
Max. Working Pressure: 150 psi (1000 kPa)

Armstrong Astro 30 Stainless Steel Materials of Construction:
Pump Body: Stainless Steel (open systems)
Impeller: Polypropylene (Glass Filled)
Shaft: Stainless Steel
Bearings: Graphite
Gasket Material: EPDM

* Flanges not included.

Size: 19
Brand: Armstrong

Customer Reviews

Based on 2 reviews
review for Armstrong Astro 230Ss, 110223-306, Stainless Steel, 3 Speed, Flanged

Replacing the same that came installed on our new custom home. Previous one started making a loud noise and smelled like it was burning. Wasting too much water waiting for it to heat up now.

review for Armstrong Astro 230SS, 110223-306, Stainless Steal, 3 Speed, Flanged

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Armstrong Astro 230SS, 110223-306, Stainless Steel, 3 Speed, Flanged

Armstrong Astro 230SS, 110223-306, Stainless Steel, 3 Speed, Flanged