Armstrong Pumps Astro-230CI-R 3-Speed Cast Iron Circulator w/ Check Valve, 0-18 GPM Flow

This circulating pump, Astro 2 series, is designed for closed hydronic systems. It is intended to circulate water or glycol solutions. Designed to work up to 230°F and 150 psi, this circulator operates quietly and requires zero maintenance. Rotated flanges are ideal for installations in tight locations, where clearance is an issue. Features: Cast iron pump body construction Ceramic shaft and bearings Cross-reference information is printed on the box, for convenient access e-coating on the inside of cast-iron volutes provides enhanced corrosion protection for improved reliability Flange-to-flange and bolt-to-bolt compatibility offers quick and easy exchange of competing models Plug-in terminal strip saves 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 Maximum flow: 18 gpm Maximum head: 18.2 ft