Armstrong Pumps 110223-308; ASTRO 250SS Circulator Pump (115v, 1/20hp, 18GPM)

A hydronic circulator that conserves energy and eliminates maintenance. Armstrong's Astro 2 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.

• Efficient/Quiet Operation.
• Universal Flange to Flange Dimension.
• Stainless Steel Construction.
• ETL Listed (conforms to UL and certifies to CSA).
• No mechanical seals to leak.
• No couplers to break.
• No lubrication.
• 3 speed selection.
• Removable check valve.
• Direct replacement of Armstrong and over 90 competitive circulators.
• Vent plug for initial purging if required.
• Thermally protected motor.
• Five-year Warranty.