Check the listing for details. Armstrong 182212-841 Cast Iron Circulator, 2/5 HP, 120 V, 1 Ph, Model E12.2. Condition: New. Listed at 1216.67 USD. Armstrong Pumps 182212-841 E.2 Series circulators are designed for use in a wide range of hydronic applications, including:Hot & chilled water recirculationDomestic hot water generationSnow-melt installationsRadiant heating systemsGeothermal heat pumps E.2 Series circulators have been re-designed to improve durability and provide enhanced protection against leakage and water damage to electrical components. New design elements include:Larger, stainless steel shaftNew sealed, permanently lubricated bearingsBellows-style mechanical seal with silicon carbide wear surfacesNew water slinger to protect motor against water intrusion Note: Flanges are sold separately. Flange options include 816013-211, 816012-211, 816011-211, 816009-211.