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.

• Adjustable performance, 3-field selectable speeds to cover a wide performance range
• Easy electrical connection - simple terminal strip for fast and easy wiring
• 3-field selectable speeds allow replacement of a wide variety of fixed-speed circulators
• Cross reference for most popular models affixed to packaging saves time when installing a replacement circulator
• E-coating on the inside of cast iron volutes provides enhanced corrosion protection for improved reliability
• Flange-to-flange compatibility offers quick and easy exchange of competing models
• Large wiring box and convenient plug-in terminal strip save time
• High-flow check valve, is pre-installed for convenience, where the installation does not call for a check valve, it can be removed in seconds
• Ceramic shaft
• Ceramic bearings
• EPDM gasket

Standards/Certifications: cETLus Intertek listed, NSF 372 certified

Applications: For residential heating or cooling, potable water, water conservations

• Catalog https://www.plumbers-supply-co.com//ASSETS/DOCUMENTS/ITEMS/EN/UNI-PS2564_Cat.pdf
• Installation Sheet https://www.plumbers-supply-co.com//ASSETS/DOCUMENTS/ITEMS/EN/UNI-PS2564_Instal.pdf
• Specification Sheet https://www.plumbers-supply-co.com//ASSETS/DOCUMENTS/ITEMS/EN/UNI-PS2564_Spec.pdf