Description
Armstrong Astro 2 Circulators are designed for quiet operation and zero maintenance. Intended to circulate water or ethylene-glycol solutions in closed hydronic or solar heating systems. Available in Cast Iron and Stainless Steel volutes for residential, small industrial, and commercial applications.
Applications: Residential heating or cooling, potable water, water conservation.
Performance range: 0 to 64 US gpm flow; 0 to 42 ft head
Temperature: Max ambient temp 40°C; max fluid temp 110°C
Power Range: 33 W to 218 W
Size: ½” – ¾” sweat, 1¼” union, or standard 2 bolt flange
