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

Note: Formerly known as Astro 30 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. **Flanges must be purchased separately Product Features Efficient/Quiet Operation Universal Flange to Flange Dimension Stainless steel UL and CSA Listed Product Benefits 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 Five-year Warranty