Description
• 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
• Cast iron pump body construction
• Ceramic shaft and bearings Cross-reference information is printed on the box, for convenient access
• EPDM gasket
• Removable check valve installed at pump outlet
• Open system body
• Flange with (2) 1/2 in. diameter bolt holes
• 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
• For use in hydronic heating and chilled water systems
• Smaller compact motor housing
• New terminal box is better located to facilitate easier installation
• Replaceable cartridge design
• Maximum flow: 18 gpm
• RPM: 1750
• Phase: 1
• Maximum head: 18.2 ft
• Flanges are sold separately
• Connection Size: 1", 1-1/2", 1-1/4", 3/4""
• Maximum Temperature 110C
• Connection Type: Flanged
• Motor Speed: 3
• Motor Enclosure: ODP
• Pressure – Maximum: 150 psi