Product DescriptionArmstrong Circulator Isolation Flanges (CIF) are used in pairs to connect circulating pumps in hydronic systems. These devices rapidly isolate a circulator to be serviced, and eliminate the need to drain and refill the entire system. The CIF integrates...

Product DescriptionA 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...

Product DescriptionThe ASTRO 250CI 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...

Product DescriptionAstro-250SS circulator with timer, aquastat & 6 ft. line cord 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...

Product DescriptionArmstrong Flanged Circulation Pump E7 Series - ARMflo E Series high efficiency circulators are perfect for heating or cooling applications such as Hot Water, Geothermal, Radiant Panel and Snow Melting in Large Residential and Light Commercial installations. The advanced...

Product DescriptionArmstrong Flanged Circulation Pump E9 Series - ARMflo E Series high-efficiency circulators are perfect for heating or cooling applications such as Hot Water, Geothermal, Radiant Panel, and Snow Melting in Large Residential and Light Commercial installations. The advanced motor...

Product DescriptionArmstrong Flanged Circulation Pump E9 Series - ARMflo E Series high efficiency circulators are perfect for heating or cooling applications such as Hot Water, Geothermal, Radiant Panel and Snow Melting in Large Residential and Light Commercial installations. The advanced...