Armstrong 30-3 Astro Three Speed Wet Rotor Circulator # 110223-305 Stainless steel rotor assembly, Cast Iron Housing 1/8 hp; 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 30-3 has been replaced with 230CI