Armstrong Astro 2 Series Astro 250CI， 115 V， 1PH， 60 Hz (110223-307)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>It is designed with no mechanical seals or couplers to replace</li><li>Efficient/Quiet Operation Universal Flange to Flange</li><li>Intended for circulating water or ethylene glycol solutions in closed hydronic or solar heating</li><li>A hydronic circulator that conserves energy and eliminates maintenance systems</li><li>No lubrication is required. Manufacturer Part Number 110223-307</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31-AwaZBwAL.jpg" noproxy>