Stainless steel rotor assembly
Cast Iron Housing
120 Volt, 60Hz
Includes flange gaskets
Pumps will accept flange sizes 3/4″, 1″, 1-1/4″ & 1-1/2″
Replaces Bell & Gossett, Taco flanges, Grundfos
50-3 has been replaced with 250CI.

110223-307 Armstrong Astro 250CI 3-Speed Circulating Pump. The Armstrong Astro 2 circulators are designed for quiet operation and zero maintenance. In combination with cast iron volutes the Astro 2 line is intended to circulate water or ethylene-glycol solutions in closed hydronic or solar heating systems. The Astro 2 line is available in three volute materials for residential, small industrial, and commercial applications.