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Armstrong Astro 2 Circulator Pumps

Astro 2 series includes 3-speed circulators in cast iron (for closed-loop), stainless steel & bronze (for open-loop/domestic water) materials. Astro 2 series circulators have standard flange-to-flange dimensions and replace a large number of competing models from Taco, Grundfos, Wilo and others. Industry-leading 5-year warranty.
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